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WO1998012048A1 - Film photocatalytique fin et articles pourvus de ce film - Google Patents

Film photocatalytique fin et articles pourvus de ce film Download PDF

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Publication number
WO1998012048A1
WO1998012048A1 PCT/JP1997/003334 JP9703334W WO9812048A1 WO 1998012048 A1 WO1998012048 A1 WO 1998012048A1 JP 9703334 W JP9703334 W JP 9703334W WO 9812048 A1 WO9812048 A1 WO 9812048A1
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WO
WIPO (PCT)
Prior art keywords
photocatalyst
thin film
light
film
photocatalytic
Prior art date
Application number
PCT/JP1997/003334
Other languages
English (en)
Japanese (ja)
Inventor
Takao Ishikawa
Tomoji Ooishi
Daigorou Kamoto
Ken Takahashi
Takuo Kawaguchi
Tetsuo Ishikawa
Yuka Hirota
Noriko Shimasaki
Original Assignee
Hitachi, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi, Ltd. filed Critical Hitachi, Ltd.
Publication of WO1998012048A1 publication Critical patent/WO1998012048A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/34—Mechanical properties
    • B01J35/36—Mechanical strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39—Photocatalytic properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/391—Physical properties of the active metal ingredient
    • B01J35/395—Thickness of the active catalytic layer

Definitions

  • the present invention relates to a photocatalytic thin film in which particles having a photocatalytic function are dispersed in a coating film and an article provided with the photocatalytic thin film, and particularly to an organic polymer material which is a material having low heat resistance, particularly a general-purpose thermoplastic plastic part.
  • the present invention relates to an article in which an oxide photocatalytic thin film is formed in a thin layer on the surface of an object.
  • the present invention also relates to an ultraviolet lamp or an article which does not provide strong ultraviolet rays such as outdoor sunlight and is suitable for use indoors, and which has an oxide photocatalytic thin film on all or a part of the surface.
  • the present invention relates to devices that use an electric blower such as a dryer, a deodorizer, and a kotatsu to create an air flow.
  • the present invention relates to a technique for obtaining surface characteristics such as anti-mold, anti-mold, and improvement of wettability, and articles thereof.
  • T i 0 z is a material for antibacterial is effective imaging products anatase 3 ⁇ 4, the functional expression that crystallization is valid is broadcast ⁇ (PiU No. (PTC) WO 9 4 / 1 1 0 9 2, (PTC ) W_ ⁇ 5 /] 5 8 1 6); and V Ding i O sigma, that have been reported those ⁇ performance of the addition of F e, etc. (W.) oi , A. Ter'miri, MR Hoffmann, J. Phys. Cheiii., 9 «, 13 669-13 679 (1994)).
  • An air purifier that is, an apparatus for removing dust and odorous substances from indoor air, is disclosed in Japanese Patent Application Laid-Open Nos. Hei 8-266841, Hei 8-266605, Hei 8-309148. as in, T i ⁇ 2 enclosing the filter and the photocatalyst carrying to principal component, a technique in which a mechanism for irradiating light having a short wavelength by using an ultraviolet lamp of any means thereto.
  • the film formed by the sol-gel method has the anti-S, antibacterial tile as a deodorant, which is described in the literature, and has several hundred ° C at least to crystallize titanium oxide. 3 () Heat treatment at 0 ° C or higher is required. Therefore, it is difficult to form a film on a substrate having low heat resistance, such as plastics, particularly general-purpose thermoplastic plastics.
  • the devices targeted by the present invention are mainly home appliances used in indoor spaces such as ordinary homes and offices, and these products are mainly made of organic polymer materials (plastics). Used. With the exception of televisions and monitors for personal computers, which are often used for glass parts, plastics account for about 40 to 50% of the weight of general household appliances, and most of the rest are metal. Consisting of Plastics account for nearly 90% by volume. Plastics are widely used for their physical properties, such as light weight, high designability, and low price, but especially thermoplastic thermoplastics have high productivity in molding work. Many are used from.
  • the most widely used general-purpose plastics as structural members include polypropylene (PP), acrylic butadiene styrene copolymer (8BS), styrene acryl copolymer (AS), polystyrene (PS), and nylon.
  • PP polypropylene
  • 8BS acrylic butadiene styrene copolymer
  • AS styrene acryl copolymer
  • PS polystyrene
  • nylon nylon
  • PA Polycarbonate
  • PC Vinyl Chloride
  • PMMA Methacryl
  • PE Polyethylene
  • PM Polyacetal
  • P Polyethylene Terephthalate
  • P Polybutylene Tele Phthalate
  • the heat distortion temperature of AS TM, D-648 (18.6 kg / cm 2 ) is around 25 (around TC.
  • Polyphenol containing glass fiber etc. as a special high heat-resistant resin
  • thermosetting resin is used for the paint.
  • polyester, acrylic, melamine, epoxy, urethane, etc. are typical examples, and baking is performed at a temperature of about 150 ° C.
  • the surface of the organic polymer material are use in general appliances, without causing damage such as deformation or deterioration, the photocatalyst mainly comprising T i 0 2 It was practically difficult to form a thin film.
  • An object of the present invention is to provide a highly active photocatalytic thin film that can be formed on the surface of a material having poor heat resistance, for example, a plastic or paint, and an article having the antibacterial, antifouling, and deodorizing effects formed from the thin film. It is in.
  • the device of Ru enhances the organic decomposition effect itself of the photocatalyst mainly comprising T i ⁇ 2, etc.
  • the invention of the photocatalyst applied technology devised in material formulation for improving the optical activity of the film containing the T i 0 2 is not performed. Therefore, for example, JP-A-8-309148 and JP-A-8-266605, which are conventionally known methods for deodorization, are used.
  • JP-A-8-309148 and JP-A-8-266605 which are conventionally known methods for deodorization
  • the activity of the photocatalyst itself is not sufficient for any of them, so that the decomposition reaction is enhanced by providing a mechanism for irradiating ultraviolet rays and a heating means. These are caused by the fact that the T i 0 body is not sufficiently fast when the light intensity is low. The reason for this is that the light intensity is not sufficient, and no measures have been taken to improve this.
  • An ultraviolet lamp is also used as a means to increase power. As UV lamps, high-pressure mercury lamps and metal halide lamps are usually used, but a power supply and a cooling mechanism are required, leading to an increase in the weight and price of the entire application product. In addition, the lamp had a service life of about 2000 hours, and required periodic replacement work.
  • T i 0 2 to F e a technique for increasing the decomposition efficiency by the addition of V is in a known hundreds ° has ⁇ performance of perform high temperature treatment and C, the low melting point of heat resistance It is difficult to apply to poor substrate materials.
  • the photocatalyst film can be deposited at a low temperature, the photolysis efficiency is improved than the decomposition efficiency at T i 0 2 alone, conventionally required by the deposit even with a small intensity Ri by the light intensity Is to be able to be decomposed.
  • the target substance is an organic substance
  • the target substance is a fine particle or a molecular substance, a liquid organic substance or a fine particle organic substance adhered thereto.
  • the target substance is a fine particle or a molecular substance, a liquid organic substance or a fine particle organic substance adhered thereto.
  • these stains are generally electrically charged and float in the air, if they adhere to the surface of a highly electrically insulating solid, the static electricity is not easily discharged, and the stains remain as they are. turn into.
  • There is also a problem that the light is blocked by the attached inorganic contaminants, so that the photocatalytic surface is not irradiated with sufficient light and the decomposition efficiency of organic substances is reduced.
  • Another object of the present invention is to prevent large-sized dust and inorganic-based dirt, which are difficult to decompose and remove in principle with the oxidative decomposition effect of these photocatalysts, from becoming a target member due to electrostatic force. It is to make.
  • the features of the present invention are electric blowers such as air purifiers, ventilation fans, electric fans, vacuum cleaners, clothes dryers, dish dryers, dishwashers, garbage disposal machines, etc.
  • electric blowers such as air purifiers, ventilation fans, electric fans, vacuum cleaners, clothes dryers, dish dryers, dishwashers, garbage disposal machines, etc.
  • the parts of electrical appliances mainly used indoors that have a mechanism to generate an air flow by being driven, the surface of the air flow path, the filtration mechanism in the air flow path, or the exterior parts exposed to the indoor illumination light
  • Another object of the present invention is to provide a low-temperature curing type highly active oxide photocatalytic thin film.
  • the melting point or decomposition temperature of the material of the target component is 300 ° C or less.
  • molded members made of general-purpose thermoplastic plastics, fibrous members, foamed members, and sheet-shaped members By providing a low-temperature curing type highly active oxide photocatalytic thin film, problems such as contamination, propagation of microorganisms, and generation of offensive odor can be solved.
  • the specific wavelength required to break the bond between the metal atom of the organometallic compound and the organic S during the process of forming a thin film of an inorganic polymer mainly composed of S i ⁇ z and T i ⁇ Incorporating a process that promotes the hydrolysis reaction by irradiating electromagnetic waves containing, the inorganic polymer can be polymerized at a low temperature.
  • the strength of a strong oxide photocatalytic thin film can be obtained at such a low temperature that no deformation, melting, or decomposition occurs on the surface of the plastic.
  • An oxide photocatalytic thin film in which fine particles are dispersed is an element with an electronegativity of less than 1.6 and an ionic radius of less than 0.2 nm and a valence of less than 0.2 nm.
  • the reaction efficiency was improved by adding two or more ions.
  • As the specific elements to be added Na, Li,, Sr, Mg, Ca, and Zn are particularly effective, and the added amounts of these elements are 0.5 to 20. wt% is preferred. It is most effective to adjust the size of the T i ⁇ 2 fine particles to 5 to 2 O nm.
  • the oxide thin film preferably has a thickness of 100 to 500 nm.
  • the component to be added is, in addition to the above ions, at least an electron affinity
  • oxide fine particles mainly composed of an oxide semiconductor composed of a metal element having a force of 1.2 or more are dispersed.
  • those whose elements are composed of Sn, Fe and Cr are preferred.
  • the addition amount is preferably 2 to 50 wt%.
  • oxide fine particles mainly composed of ATO (antimony-added tin oxide; the weight ratio of antimony is preferably 1% to 0%) are particularly effective.
  • the first layer counting Ri by surface Yes dispersed is T i ⁇ 2 particles in S i 0 2, 3 ⁇ 4 prior to its film
  • the oxide fine particles mainly composed of the above oxide semiconductor are dispersed in the second layer counted from the surface. This allows the photocatalyst to function effectively without damaging even surfaces of plastics or the like that are less resistant to oxidation. It is more effective to add at least one of Fe, A1, and Zr to the second layer.
  • Ding i 0 2 has a function as a photocatalyst, having antibacterial due to decomposition of organic matter, deodorant, the effect of the anti-fouling or the like. Its function is attributed to electrons and holes generated when the semiconductor T i ⁇ 2 irradiates light, particularly ultraviolet light. When T i 0 2 a semiconductor is irradiated with light having energy higher than bandgap, generates the electronic and hole. Generated electrons and holes to generate ⁇ ⁇ I radicals and H radicals by decomposing the water adsorbed on the T i 0 2 surface. By reacting this radical with an organic substance, the organic substance can be decomposed.
  • the photocatalyst decomposes organic substances and the like by the following mechanism, but there are the following two means to further increase the reaction speed.
  • the first is to increase the work of one active point, and the second is to increase the number of active points.
  • Increasing the number of active sites can be achieved by increasing the surface area, that is, by making T i ⁇ z finer.
  • the reaction rate can be increased.
  • improving the crystallization of ⁇ 1 [(anatase) and increasing the surface area are contradictory, and it is difficult to achieve both.
  • T i 0 2 surface there are T i defects. This defect becomes a recombination point between the electron and the hole and hinders the reaction. If an ion having an ion radius of about the same as that of Ti is added, it penetrates the Ti defect on the surface, the defect disappears, and the recombination point decreases. Furthermore, since it exists as a positive ion, the electron can be attracted and separated from the hole, and the oxidation reaction of organic matter can be promoted.
  • the present invention has found that an additive having such an effect is effective if the electronegativity is less than 1.6 and the ionic radius is less than 0.2 nm.
  • the present invention improves the performance by adding other oxide semiconductor particles. I found what I can do. This large oxide semiconductor by Li in the carrier concentration to a small T i 0 2 carrier concentration is achieved by injecting the carrier. Therefore, it is necessary to make it easier carrier from the oxide semiconductor to T i 0 2 flow. When the electron affinity of the oxide semiconductor is less than or equal to Ti, a Schottky barrier is formed. Therefore, the material to be added has an electron affinity
  • a barrier layer is formed between the substrate and the photocatalyst.
  • Fe, A1, and Zr By adding Fe, A1, and Zr to the barrier layer, self-destruction can be completely suppressed.
  • the thickness can be made sufficiently thin.
  • conductive fine particles such as AT0 are added and when they are laminated, the performance of the photocatalyst is improved, and the antistatic function is added, so that not only decomposition of organic matter but also dust floating in the air is achieved. It can prevent the adhesion of inorganic substances such as water and provide a higher performance antifouling function.
  • the present invention has a high activity as described above, and can be decomposed with weaker light illuminance than before, or has an antistatic function, so that the fine particles themselves that become dirty are less likely to adhere due to static electricity.
  • a thin film of a highly active photocatalyst having a high film thickness can be formed on the surface of a material that has insufficient heat resistance with conventional film formation methods.
  • the electromagnetic wave having the specific wavelength is most preferably ultraviolet light. After applying a solution containing a small amount of organic gold compound and water to the surface of the adherend, it is necessary to break the bond between the metal atom and the organic group of the organometallic compound such as ultraviolet light. It is most preferable to irradiate an electromagnetic wave having a specific wavelength and heat and dry at the same time, or to heat and dry the coat after the electromagnetic wave irradiation step.
  • the titanium oxide particles having the photocatalyst W: used in the conventional technology dispersed in the inorganic thin film have a smaller area occupied by titanium oxide than the photocatalyst composed of titanium oxide alone.
  • performance deteriorated.
  • a large amount of an inorganic binder is added to increase the strength, but there is a problem that the activity is significantly reduced.
  • an object of the present invention is to provide an active photocatalyst material even in a configuration in which titanium oxide is dispersed in a binder, and to provide a product using a photocatalyst that functions sufficiently even in a living environment.
  • the present invention is the AT photocatalyst comprising titanium oxide (), the addition of R u 0 2. Also, any one of Li, Na, and Mg is added.
  • the present invention is a production method for improving the bonding state at the interface between different kinds of semiconductors by directly coating ATO particles on titanium oxide powder. Furthermore, the present method is a coating method in which high-temperature processing is performed as a pretreatment, and a film can be formed at a low temperature of about 120 ° C during coating.
  • L i, N a, the addition of M g is the ion radius and near their ionic radii T i, easily penetrate into T i defects T i 0 2 surface to ⁇ the stability of the crystal.
  • L i, Na and Mg attract electrons because of their strong ionicity. It is easy to attach and separates electrons and holes generated by absorbing light, which can increase the reaction efficiency.
  • the film forming method of the present invention can be manufactured at about 120 ° C., and can be applied not only to ceramic substrates but also to plastic materials.
  • 4 0 or is difficult to apply to plastic products for a temperature of about TC is required, it takes time for 1 Y component than h for the crystallization of T i ⁇ 2.
  • fabrication method of the present invention can be deposited at low temperatures, abundant S material that can be used, can be formed even photocatalyst what kind of surface:., also 4 possible short-term treatment of several minutes :
  • the production cost can be reduced to a large fcl, and the present invention is obtained by adding RS ⁇ (RuSrO :,) to a photocatalyst composed of titanium oxide.
  • the present invention also relates to a production method for improving the state of contact at the interface between different kinds of semiconductors by coating RS0 directly on the semiconductor photocatalyst powder, and furthermore, performing high-temperature treatment as pretreatment.
  • This is a coating method capable of forming a film at a low temperature of about 12 () ° C during coating.
  • RSO added photocatalyst by 1 30 and T1s' ⁇ contacts, by the e Ichiru of RSO Ding i 0 2 photocatalyst is utilized, you on the performance of the photocatalyst.
  • the oxidation activity of the catalyst is due to the redox effect of electrons and holes generated by light absorption. In particular, the formed holes generate hydroxyl radicals and cause strong oxidation.
  • RS ⁇ is a p-type semiconductor and has a large amount of holes.
  • Li, Na, and Mg have ionic radii close to the ionic radius of T i, and easily penetrate T i defects on the surface of T i ⁇ 7 to increase the stability of the crystal. Since Li, Na, and Mg have strong ionicity, they can easily attract electrons, absorb light, separate generated electrons and holes, and increase the reaction efficiency.
  • the crystal becomes rutile at 600 ° C. or higher. It is the anatase type that exhibits a sufficient function as a photocatalyst. With the rutile type, the performance of the photocatalyst drops rapidly. Therefore, 1 if 3_Rei ⁇ raising process Ding 1_Rei 2 after addition, RS 0 is the force T i O z as a p-type semiconductor phase transition to rutile, lose the function as a photocatalyst. Therefore, Ding i ⁇ 2 similar function as the photocatalyst can be expected ST_ ⁇ using (S r T i ⁇ 3), RS 0 added ST 0 photocatalyst is effective.
  • 3 chome 0 has substantially the same bands structure T1s ⁇ 2.
  • the production method is to crystallize by treating at a high temperature of 700 to 850 ° C.
  • RS 0 and ST 0 are both perovskites, and their crystal lattice constants are almost the same because S r-0 is common. Therefore, the manufacturing conditions are very close to those of RS ⁇ , the bonding state is good, and the activity of the photocatalyst can be improved.
  • the present invention added an adsorbent to a photocatalyst composed of titanium oxide.
  • the added adsorbent is zeolite.
  • the present study is a zeolite obtained by ion-exchanging one of Cu, Ag, Li, Na, and Mg with a photocatalyst consisting of titanium oxide.
  • Conventional photocatalysts are composed of a semiconductor photocatalyst material represented by titanium oxide. These materials are characterized in that they can be deoxidized and self-cleaned by a redox reaction of a photocatalyst. In self-cleaning, deterioration of the catalyst may be noticed if stains become noticeable, but antibacterial properties are difficult to judge visually. In spite of the reduced functions, such as film peeling and performance degradation, dangerous germs and other bacteria may proliferate if used unnoticed.
  • an object of the present invention is to provide a photocatalyst material whose performance can be easily judged visually.
  • the present invention relates to an antibacterial and antifouling material comprising a photocatalyst, wherein deterioration of the function is visually recognized.
  • This is a photocatalyst in which a pigment that absorbs visible light is added to the photocatalyst.
  • Photocatalysts generally absorb ultraviolet light to produce a catalytic action. In living environments, there is only a small amount of ultraviolet light. Is going. If visible light can be used effectively, a high-performance photocatalyst can be provided in a living environment.
  • a solar cell a wet solar cell using titanium oxide using visible light has already been manufactured. This is due to the fact that dyes that absorb visible light are stacked, and electrons excited by absorption of visible light by the dye irradiate the titanium oxide, causing a current to flow. A similar decrease can be expected for photocatalysts.
  • Sensitive dyes are mostly organic substances and are not only decomposed directly by ultraviolet light, but also easily decomposed by photocatalysis, and because they use visible light effectively, their performance is improved and they are decomposed. Therefore, the present invention focused on a pigment system that is less likely to be degraded by ultraviolet light and conducted a test, and found that the pigment system had a low decomposition rate and further exhibited a sensitizing effect.
  • pigments are mainly organic substances, they eventually decompose and degrade, but when pigments are added, they gradually decompose in the living environment. By using, it is possible to adjust the disassembly speed at the time of product parts replacement and to make the material replacement time.
  • the conventional photocatalyst is made of a semiconductor photocatalyst material represented by titanium oxide. These materials are characterized by their antibacterial and self-cleaning properties through the redox reaction of the photocatalyst. Self-cleaning may indicate deterioration of the catalyst if the stain becomes noticeable, but antibacterial properties are difficult to determine visually. In particular, even if functions are deteriorated, such as film peeling and performance degradation, dangerous germs etc. will grow if used unnoticed, which may be a problem. Therefore, the present invention provides a photocatalyst material which can easily determine the performance by visual observation.
  • the present invention provides an antibacterial and antifouling material comprising a photocatalyst, wherein deterioration of the function is visually recognized.
  • An antifouling material a photocatalyst made by adding a pigment that absorbs visible light to a photocatalyst made of titanium oxide.
  • Photocatalysts generally absorb ultraviolet light to produce a catalytic action. Only a small amount of ultraviolet light exists in the living environment, and the photocatalyst performs antibacterial and antifouling by using this minute amount of light. If visible light can be used effectively, a high-performance photocatalyst can be provided under production conditions.
  • a solar cell a wet type solar cell using titanium oxide, which has illuminated light, has already been manufactured. This is due to the sensitizing effect in which dyes that absorb visible light are laminated, and the dyes that absorb visible light excite the titanium oxide to excite the titanium oxide, causing a current to flow. A similar decline can be expected for photocatalysts.
  • the electrons that absorb and excite visible light can stimulate the titanium oxide and be used for the redox reaction of the photocatalyst.
  • dyes having a sensitizing effect are mostly organic substances, and are not only decomposed by UV light but also easily decomposed by photocatalysis.
  • visible light since visible light is effectively used, the performance is improved, and it is more easily decomposed, and deteriorates immediately even in a living environment. Therefore, in the present invention, a test was conducted with a focus on a pigment system having little deterioration due to ultraviolet rays, and it was found that the pigment system had a low decomposition rate and also had a sensitizing effect.
  • a photocatalyst applied to a plastic product is a product obtained by adding an inorganic binder such as a silica force to titanium oxide.
  • an inorganic binder such as a silica force
  • the present invention provides a photocatalyst material that does not cause film peeling when washing such as water washing does not occur even if a large amount of a binder is added, without causing a decrease in the performance f of the photocatalyst.
  • Inorganic dirt can be easily cleaned, reducing the number of product cleanings and parts replacement.
  • a material having an antibacterial and antifouling action composed of a photocatalyst can be washed with water, can remove inorganic stains, and can be further strengthened by adding an organic resin.
  • the organic resin used as the binder has a silanol group, or the organic resin has UV curability.
  • UV curable When using resin, add A], Ti, Si-based coupling agents.
  • the adhesion to the plastic surface is insufficient.
  • the material of the organic resin is selected according to the base material, the adhesive strength will be sufficient and the strength will be sufficient for washing.
  • organic resins are decomposed by photocatalysis. To prevent this, it is desirable to use an inorganic material, but in this case, the strength is low. Therefore, decomposition can be suppressed by introducing an inorganic functional group to the side chain of the organic resin and bonding the contact portion with the titanium oxide surface by the inorganic system.
  • the resin can be cured without applying heat.
  • a room temperature curing resin there is a feature that can be achieved by using a room temperature curing resin.
  • room-temperature curing systems take about 24 hours, except for instant adhesives.
  • the instant adhesive cures in a short time, but is gradually decomposed by the photocatalyst.
  • UV curing systems are examples of resins that can be cured in a short time and have excellent light resistance.
  • the UV curing system cures with ultraviolet light, and gradually polymerizes and cures with ultraviolet light irradiated from a fluorescent lamp. However, it is also true that it is gradually decomposed by the photocatalyst. Therefore, by appropriately combining photo-curing and photo-decomposition, light resistance can be improved as a result.
  • UV curable resin completely T i 0 catalytic properties of 2 particle surface resin covered is irretrievably lost. Therefore, addition of couplings agents, can be many Exposure of T i ⁇ 2 surface.
  • the photocatalyst can maintain a large amount of surface-adsorbed water by adding a force-coupling agent that decomposes the surface-adsorbed water to generate radicals, and can exhibit catalytic performance.
  • FIG. 1 is a configuration diagram of a filtration-type air purifier main body according to an embodiment of the present invention.
  • FIG. 2 is a perspective view of a filtration-type air purifier main body according to the embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of an electrostatic precipitating air cleaner body according to an embodiment of the present invention.
  • FIG. 4 is a pictorial view of the kitchen / jj ventilation fan body according to the embodiment of the present invention.
  • FIG. 5 is a perspective view of a fan main body according to the embodiment of the present invention.
  • FIG. 6 is a perspective view of the vacuum cleaner according to the embodiment of the present invention.
  • FIG. 7 is a sectional view of the cleaner body according to the embodiment of the present invention.
  • FIG. 8 is a sectional view of the main body of the clothes dryer according to the embodiment of the present invention.
  • FIG. 9 is a perspective view of the tableware dryer main body according to the embodiment of the present invention.
  • FIG. 10 is an enlarged cross-sectional view of an exhaust port portion of the drying machine according to the embodiment of the present invention.
  • FIG. 11 is a cross-sectional view of the main body of the dish dryer according to the embodiment of the present invention.
  • FIG. 12 is a perspective view of a dishwasher main body according to the embodiment of the present invention.
  • FIG. 13 is a sectional view of the dishwasher main body according to the embodiment of the present invention.
  • FIG. 14 is a sectional view of the dishwasher main body according to the embodiment of the present invention.
  • FIG. 15 is a perspective view of a kitchen waste treatment machine main body according to the embodiment of the present invention. You.
  • FIG. 16 is a cut-off fi of the kitchen waste treatment machine main body according to the embodiment of the present invention.
  • the first 7 is a sectional view of the T i 0 2 dispersion S i 0 2 film formed on the PKT film according to an embodiment of the present invention.
  • FIG. 18 is a cross-sectional view of a low-temperature curing type highly active photocatalytic thin film formed on an adherend according to an embodiment of the present invention.
  • FIG. 19 is a cross-sectional view of a low-temperature curing type active photocatalytic thin film having two layers formed on the adherend according to the embodiment of the present invention.
  • FIG. 0 is a diagram showing a decomposition test result of the organic dye according to the embodiment of the present invention.
  • FIG. 21 is a diagram showing the relationship between electronegativity and decomposition rate according to the embodiment of the present invention.
  • FIG. 22 is a diagram showing the relationship between the electronegativity and the ion radius according to the embodiment of the present invention.
  • FIG. 23 is a view showing a smoke-collecting effect of the low-temperature-curing high-activity photocatalytic thin film according to the embodiment of the present invention.
  • FIG. 24 is a diagram showing the photodecomposition effect of the smoke deposition filter according to the embodiment of the present invention.
  • FIG. 25 is a view showing an ammonia collecting effect of the low-temperature curing type highly active photocatalytic thin film according to the embodiment of the present invention.
  • FIG. 26 is a diagram showing the photolysis effect of ammonia gas according to the embodiment of the present invention.
  • FIG. 27 is a diagram showing the photodecomposition effect of the smoked BS plate according to the embodiment of the present invention.
  • FIG. 28 is a diagram showing the photolytic effect of salad oil according to the embodiment of the present invention.
  • FIG. 29 is a diagram showing a decomposition test result of the organic dye according to the embodiment of the present invention.
  • FIG. 30 is a graph m showing the effect of adding zeolite according to the embodiment of the present invention.
  • FIG. 31 is a diagram showing the influence of the ratio of S i to A] according to the embodiment of the present invention.
  • FIG. 32 is a diagram showing the effect of addition of the ion-exchanged zeolite according to the embodiment of the present invention.
  • FIG. 33 is a diagram showing the antibacterial effect of adding zeolite according to the embodiment of the present invention.
  • FIG. 34 shows the results of a decomposition test of tobacco smoke according to the embodiment of the present invention.
  • FIG. 35 is a diagram showing a result of a decomposition test of cigarette smoke with respect to an amount of a binder added according to the embodiment of the present invention.
  • FIG. 36 is a diagram showing a result of a decomposition test of cigarette smoke with respect to an introduced amount of silanol according to the embodiment of the present invention.
  • FIG. 37 is a diagram showing a result of a decomposition test of tobacco smoke with respect to an added amount of the coupling agent according to the embodiment of the present invention.
  • Table 1-Table 1 show the composition of the thin film of low-temperature curing type highly active oxide photocatalyst formed on the surface of various molded products, painted steel sheets, filters, etc. and the effects of the examples. The results are shown in Table 9.
  • FIG. 1 An air purifier, which is a first embodiment of the present invention, will be described with reference to FIGS. 1, 2, and 3.
  • FIG. 1 An air purifier, which is a first embodiment of the present invention, will be described with reference to FIGS. 1, 2, and 3.
  • FIG. 1 An air purifier, which is a first embodiment of the present invention, will be described with reference to FIGS. 1, 2, and 3.
  • FIG. 1 An air purifier, which is a first embodiment of the present invention, will be described with reference to FIGS. 1, 2, and 3.
  • Fig. 1 is a configuration diagram of a filtration-type air purifier main body
  • Fig. 2 is a perspective view of the main body.
  • the condenser motor 7 is fixed to the rear cover ⁇ '2 with screws 8
  • the motor driving condenser 11 and the transport switch 9 are set
  • the fan 6 is connected to the condenser 5 with the nut 5.
  • filter 3 is fixed to panel (intake port) 2 and panel (inlet port) Remove 2 and filter 1 3.
  • the switch knob 10 is fixed to the luck switch 9.
  • the fan ⁇ rotates due to the driving force of the condenser motor ⁇ , and creates an air flow.
  • dirty air in the room including dust, smoke, oil particles, dead bodies of microorganisms and microbes, pollen and foul odors
  • the sucked-in dirty air is filtered and cleaned by the filter 3 part, and then discharged from the exhaust port 15 of the grill 14 part.
  • the three parts of the filter have a composite structure to have a function to remove various dirt and odors.
  • the filter 13 is composed of an outer filter 3a, which is a layer covering the outer surface, and an inner filter 13b inside the outer filter 13a (not shown).
  • each filter is a nonwoven fabric layer or a sponge-like porous layer made of polyester, urethane, cellulose, nylon, or electret-treated polyolefin to filter dust. .
  • the inner filter 13b contains, in addition to these basic structures, activated carbon particles and fibers for adsorbing odors, which are mixed, blended, or encapsulated. Still, to neutralize odor in the fiber body 2 ⁇ )
  • the drug may penetrate or spread on the surface.
  • As the drug in addition to various kinds of organic acids and flavonoids such as alloids, antibacterial agents for suppressing the growth of microorganisms are also used. In recent years, highly safe chitin and chitosan catechin derivatives have been used. Air volume to be generated is about. 2 to 3 (m 3 // min), the 8-mat room is ⁇ the ability to remove smoke 7 0 ⁇ ⁇ 5% of the tobacco in the operation of the 3 0 min.
  • the outer filter 3a is made of a nonwoven fabric of acryl fibers, and a thin film of a low-temperature-curing type highly active oxide photocatalyst of the sample No. 21 shown in Table 3 described later is formed on the surface of the outer filter 3a. Is formed. ⁇ click Lil nonwoven filter scratch, after corona discharge treatment, a thin film of S i 0 2 only, i.e. samples N o. 1 2 of the first 1 3 ⁇ 4 is formed as a base layer, after forming the film, sample N o. A low-temperature curable high-active oxide photocatalyst thin film of 21 is formed.
  • Example 9 The method for forming the film will be described in detail in Example 9 below.
  • 12 irradiating with a low-pressure mercury lamp in a TC atmosphere
  • films were formed by the same means, and the application method was spraying, dipping, brushing or the like according to the shape of the work.
  • the outer filter 3a is a component that first filters the dirty air taken in from the panel (inhalation 2) 2.
  • Various foreign substances such as dust, smoke, oil fine particles, microorganisms and dead microorganisms, pollens and foul odors Adheres in large quantities.
  • the panel (inlet) 2 is provided with a number of openings to efficiently suck in air, and the air intake surface of the outer filter 3a is used to open indoor lighting and sunlight from this opening. Light is irradiated. This light oxidizes and decomposes the foreign matter collected on the surface of the outer filter 3a.
  • tobacco smoke and fine oil particles adhere to the low-temperature curing type highly active oxide photocatalyst on the surface of the filter in a thin film form.
  • the exterior parts of the main body of the air purifier 1, panels (inhaler 1) 2, frame 4, operation switch 9, and rear cover 1-2 are injection-molded products of aged plastic plastic ⁇ ⁇ S It is. A low-temperature-curable, highly active oxide photocatalytic thin film is formed on the outer surface of these components.
  • FIG. 1 a schematic diagram of the thin film of the sample of this acrylic nonwoven fabric filter shown in Table 6 below (shown in Table 6 below) is shown in FIG.
  • the plastic adherend 189 is an acrylic fiber
  • the low-temperature-curable high-active oxide photocatalytic thin film is composed of the first surface 1 ⁇ 19 4 and the second surface layer 192. They become a state of T i ⁇ 2 particles ⁇ 8 7 and lithium 1 9 0 in S i 0 2 film 1 8 6 are dispersed in the second layer 1-9 in 2 3 ⁇ 4 face antimony-doped tin oxide fine particles 1 9 3 are dispersed.
  • a thin film of a low-temperature curable S-active oxide photocatalyst of No. 86 is formed.
  • the first layer is formed after corona discharge treatment, and after this film is formed, the second layer of the low-temperature curing type highly active oxide photocatalyst containing ⁇ T0 of sample No. 86 is formed. Two layers are formed.
  • Fig. 3 is a cross-sectional view of the electrostatic precipitating air purifier.
  • the whole consists of a front cover 16 and a rear cover 17.
  • An inlet 19 and an exhaust 20 are provided on the front cover 16 and panel 18, and the inlet 19 and In the ventilation path connecting the intake port 19 and the exhaust port 20, there is a pre-filter 21 with a removable S.
  • a dust collecting electrode 22 and a discharge electrode 23 are provided facing each other, and further, an ozone removing filter 24 for removing ozone generated from the dust collecting electrode 22 and the discharge electrode 23 is provided.
  • a dust collection unit in which a pre-filter 21, a dust collection electrode 22, a discharge electrode 23, and an ozone removal filter 24 are mounted on a frame 25.
  • a cushioning material 26 a duct 28 that connects the blower 27 and the dust collection unit, and a blower 27 at the contact portion with the dust collection unit, and the cushioning material 26 is a duct.
  • the duct 28 is attached to the blower 27, and the duct 28 is attached to the blower 27.
  • the purified air is exhausted from the exhaust port 20,
  • the pre-filter 21 plays the same role as the outer filter 3a in the case of the filtration type air purifier.
  • the pre-filter 21 is a nylon net, on which a thin film of a low-temperature curing type highly active oxide photocatalyst of the sample No. 21 shown in Table 3 below is formed. ing. After the nylon net is irradiated with ultraviolet rays, a thin film of a low-temperature-curable high-active oxide photocatalyst of Sample No. 21 is formed. A schematic diagram of the thin film on the surface of the nylon net is shown in FIG. Here, the plastic adherend 189 is a Nymouth fiber, and the low-temperature-curable high-active oxide photocatalytic thin film 191 is composed of S 10,
  • the Ti 0 2 fine particles 18 7 and the lithium 19 0 are dispersed in 18 6.
  • the rear cover 17 is an injection molded product of ⁇ BS, and the front cover
  • FIG. 4 is a cross-sectional view of a structure of a kitchen ventilation fan as viewed from a side.
  • the box-shaped frame 29 has a motor 30 attached thereto, and the motor 30 has blades 31 attached thereto.
  • a shirt 32 is attached to the outside (exhaust side) of the frame 29, and an orifice 33 is attached to the indoor side (intake side) of the frame 29.
  • a lighting fixture 3 with a fluorescent tube 34 is attached to the _I-. Section inside the tail of the orifice 3 (suction).
  • a filter 36 is attached to the indoor side (intake side) of the orifice 33 and the lighting fixture 35. At the bottom of the filter 36, there is an oil bottle: 37.
  • Ventilation capacity is common, if the diameter of the blade 3 1 of 2 5 (cm), about 8 0 0 ⁇ 1 0 0 0 (m 3 Z time).
  • Fig. 4 shows a ventilation fan for kitchen use, but the basic structure is the same for general indoors, toilets, bathrooms, etc., except for the mounting angle and the location of parts. is there.
  • the structure of the filter 36 can be made into a composite structure according to various uses to provide a deodorizing function and an antibacterial function.
  • the filter 36 is a single-layer filter made of a non-woven fabric of acryl fiber, and a thin film of a low-temperature curing type highly active oxide photocatalyst of the sample No. 22 shown in Table 3 is provided on the surface thereof. Is formed. ⁇ click Lil nonwoven fabric filter scratch, after corona discharge treatment, a thin film of only S i O z, sample N o. 1 2 of ie Table 1 is formed as a base layer was made form this film After thinning the sample ⁇ 2. A film is formed.
  • the frame 29 is an injection molded product of PS (high impact styrene resin), and the orifice 33 and the blade 31 are ABS molded products. On the surface of these molded parts, a low-temperature-curable high-active oxide photocatalytic thin film of sample No. 86 was formed in the same manner as in the above-described air cleaner.
  • PS high impact styrene resin
  • Shirts 32 which are parts facing the outdoors, are made of cold-rolled steel sheet that has been subjected to hot-dip galvanized treatment, and its surface is electrodeposited with an acrylic resin. A low-temperature-curing plastic active oxide photocatalyst thin film of Sample No. 86 was formed.
  • the indoor surface of the filter 36 is irradiated with light from indoor lighting, and the opposite surface is irradiated with light emitted from the lighting equipment 35.
  • Light emitted from the lighting equipment 35 is also applied to parts such as the frame 29, the orifice 33, and the blades 31 and the oil pocket 37.
  • the surface of the shutter 8 facing the outside is irradiated with sunlight.
  • a lighting device 35 is generally provided conventionally. This is a function provided to illuminate the hand at the time of cooking, and can be turned on in synchronization with the operation of the ventilation fan, or can be turned on independently only the lighting function. Since the organic matter decomposition efficiency of the photocatalyst according to the present invention is larger than that of the conventional one, a sufficient decomposition action can be obtained at the level of indoor lighting without the use of additional lighting equipment, especially when the dirt load is small.
  • FIG. 5 shows an external perspective view of the structure of the fan.
  • Fan body base
  • a column 39 is mounted on the column 38, and a slide pipe 40 is slidably inserted on the column 39.
  • the slide pipe 40 supports a head 44 composed of blades 41, guards 42, and a motor 43 upward.
  • the strut 39 is formed so as to be thicker downward in consideration of strength.
  • the blades 4 1 are rotated by the driving force of the electric motor 4 3, and an air flow is created ahead of the main body 3 ⁇ 4 tfi.
  • the guard 4 2 serves to prevent a finger or the like from touching the rotating blade 4 1. However, the guard 4 2 is designed to further increase safety by preventing accidents such as a child.
  • the whole may be covered with nets 45 (not shown).
  • a remote control holder 14 4; is attached to the lower part of the column 39, and the remote control 47 is usually stored in the remote control holder 46.
  • the infrared signal is received from the infrared emitting section 48 of the remote controller 47, and the signal is received by the infrared receiving section 49 on the top of the main unit 38. Perform the setting operation.
  • the blade 41 is an injection molded product of ⁇ S resin.
  • a low-temperature-curable high-active oxide photocatalytic thin film of Sample No. 86 is formed in the same manner as in the case of the molded article such as ABS.
  • Guard 42 is made of a polyester wire baked and coated with a steel wire rod, and the surface thereof is also formed with a low-temperature curing type highly active oxide photocatalytic thin film of sample No. 86.
  • Net 45 is made of nylon fiber, on which a low-temperature-curable high-active oxide photocatalytic thin film of sample No. 86 is formed. I have.
  • the infrared light emitting portion 48 of the remote controller 47 and the infrared light receiving portion 49 on the upper surface of the main body base portion 38 are made of a transparent member made of AS resin.
  • a thin film of a low-temperature-curable high-active oxide photocatalyst of Sample No. 86 was formed on the surfaces of these transparent parts. After forming a film of a titanate coupling agent on the surface of the target part, the first layer is formed. After forming this film, the sample No. 86 is cured at a low temperature including ⁇ T0. A second layer of a highly active oxide photocatalyst is formed.
  • the surfaces of the blades 41 and guards 4'2, etc. are exactly the same as the blades and frames of the air purifier and ventilation fan described above, and foreign substances floating in the air adhere and become dirty. According to the method, since the low-temperature curing type highly active oxide photocatalyst film is formed, the adhered dirt is oxidized and decomposed at the illuminance level of the indoor illumination light, and the dirt is hardly stained.
  • a mechanism for performing remote control using infrared light is used.
  • a transparent component used for a light emitting portion and a light receiving portion of the infrared signal On the surface of a transparent component used for a light emitting portion and a light receiving portion of the infrared signal, a low-temperature curing type highly active oxide photocatalytic thin film is provided. The signal transmission is not hindered by the dirt adhering to the component surface.
  • FIGS. 1-10 A vacuum cleaner according to a fourth embodiment of the present invention will be described with reference to FIGS.
  • Fig. 6 shows a perspective view of the external appearance of the vacuum cleaner
  • Fig. 7 shows a cross-sectional view of the ⁇ You.
  • the vacuum cleaner body 50 has a lower cover 51 covering the lower portion of the synthetic resin molded product, an upper cover 52 covering the upper portion, a lid cover 53, a grill power cover 54, and a handle portion 5. 5 mag, and a pair of large-diameter rear wheels on the left and right sides at the lower rear
  • the main body switch 58 is composed of a central infrared receiving section 59, a power switch 60 and a cordless button 61. Be composed.
  • the dust collection chamber (; 2 has a suction hose section
  • Suction consisting of 6 and extension tube ⁇ ; 4 and suction port 6 5 ⁇ Hose assembly
  • a handle part 67 is connected to the upper part of the extension pipe part (; 4), and a hand operation part 68 is attached to the hand holding part 67.
  • the hand operation part 68 has an infrared signal.
  • the infrared signal transmitted from the infrared signal transmitting section 69 is transmitted to the infrared light receiving section 59 of the cleaner main body 50, so that the infrared signal can be operated wirelessly.
  • the vacuum cleaner body 50 is provided with a dust collection chamber 62 at the front inside, an electric blower unit 70 and a code reel unit 71 at the rear inside, and furthermore, the ', 11 dynamic blower unit 70 and code
  • a control board 72 is provided above the reel unit 71.
  • a first exhaust ventilation passage 73 that is provided in a direction from the lower end to the upper end of the back of the removing machine 50 is formed in the rear of the electric blower unit 70 so as to be long in the up-down direction.
  • the lower end of 73 further communicates with a second exhaust ventilation path 74 formed below the electric blower section 70.
  • a thick paper filter (79) to 7 7 and 7 8 and attach the upper part of the dust collection chamber 62.
  • the universal wheel 57 is rotatably mounted in a horizontal direction in a recess formed in the front bottom of the lower cover 51. Garbage, dust, mites, and microorganisms sucked from the mounting U80 together with the airflow are collected on a paper filter 79.
  • the air flow from which these solids have been removed is passed through a communication port 8 3 provided with an auxiliary filter 8 2 provided on a partition plate 8 1 between the dust collection chamber 6 2 and the electric blower 70.
  • the electric blower unit 70 guides the electric blower unit 70 to cool the electric blower unit 70, and the cooled air flow passes through a second exhaust air passage 74 and a first exhaust air passage 3 to an exhaust filter.
  • the air is exhausted from the exhaust ventilation section 76 provided with 8 4.
  • the handle part 67 is an injection-molded product of ABS resin, and a thin film of a low-temperature-curable high-active oxide photocatalyst of Sample No. 86 is formed on the surface of these molded products. After forming a film of a titanium-based coupling agent on the surface of the target part, the first layer is formed, and after forming this film, low-temperature curing including the sample No. 86 8 A second layer of a high activity oxide photocatalyst is formed.
  • the vacuum cleaner is a highly mobile object as compared with the articles according to the other embodiments, the surface of the exterior component is easily scratched.
  • the main body of the vacuum cleaner and the suction port often collide with furniture and wall surfaces while traveling on the floor surface, and as a result, scratches are gradually formed, resulting in loss of luster and appearance. Not only does this impair the aesthetics above, but it can also lead to cracks and other damage due to scratches.
  • conventional UV-curable acryl trees Although the surface hardness has been ensured by performing a coating process using a fat or the like, according to the present invention, Si used as a binder and a Ti 0 2 constituting a low-temperature curing type highly active oxide photocatalytic thin film.
  • the handle part G7 is a part that can be touched with bare hands, and it is easy for bacteria to propagate using nutrients such as attached shores as nutrients, and conventional antibacterial agents such as imidazole and thiazoline are used. Also, inorganic antibacterial agents such as copper-based, illilead-based, and silver-based antibacterial agents have been kneaded into the molding resin to increase the antibacterial effect, but these treatments become unnecessary.
  • an infrared signal transmitter 6 9 provided in the same operation unit 68 is provided.
  • the infrared ray receiving section 59 of the main body 1 of the vacuum cleaner is made of a transparent AS resin molded product as in the case of the fan of the third embodiment described above, but a low-temperature curing type highly active oxide photocatalytic thin film is formed on the surface. Because of the formation, the effect of preventing the obstruction of the transmission and reception of the infrared signal due to dirt is obtained.
  • the exhaust filter 84 attached to the exhaust ventilation section 76 of the main body is made of a nonwoven fabric of acrylic and PP, and the surface of this exhaust filter 84 has been cured at a low temperature of Sample No. 21. A thin film of a highly active oxide photocatalyst is formed.
  • the exhaust ventilation section 76 is provided with a number of openings, and the air discharge surface of the exhaust filter 84 is irradiated with light such as room lighting or sunlight from the openings. Is also cleaned.
  • the upper cover 52 that covers the upper part of the main body, the lid cover 53, the grill cover 54, and the hand holding part 55, etc. transparent parts, external light reaches the inside and collects.
  • the antibacterial effect and the deodorizing effect can be obtained by forming the low-temperature curing type highly active oxide photocatalyst thin film according to the present invention on the surface of the filter of the paper filter 79 and the filter of the auxiliary filter 82 inside the dust chamber 62.
  • FIG. 8 shows a cross-sectional view of the main body of the clothes dryer.
  • 8 5 is an outer frame
  • 8 6 is an opening / closing lid
  • 8 7 is a rotating drum
  • 8 8 is a heat source
  • 8 9 is an exhaust port
  • 9 is a two-wing fan
  • 9 1 is a fan casing
  • 9 2 is a motor for power.
  • Reference numeral 93 denotes a belt that transmits the power of the motor 92 to the rotary drum 87
  • reference numeral 94 denotes a round belt that transmits the power of the motor 92 to the fan 90
  • reference numeral 95 denotes a first belt.
  • An airtight filter reference numeral 96 denotes a second airtight felt
  • reference numeral 97 denotes a partition plate
  • reference numeral 98 denotes a circulating duct for guiding the circulating air discharged from the finning 91 to the heat source 88.
  • Reference numeral 9 denotes a printer
  • reference numeral 100 denotes a fan casing.
  • An FD beam fixed to the outer frame 85, 101 is a mounting ring for mounting a bearing 002, and the rotating drum 87 is rotatably slidably supported by a bearing 102. I have.
  • the rotating drum 87 rotates together with the two-blade fan 90 when the driving force of the motor 92 is transmitted through the belt 93.
  • the inner surface of the rotating drum 87 which is the part to which the light of the lighting equipment is irradiated, such as the cushioning material 105, the rear filter device E 99, and the inner surface of the opening / closing lid 86.
  • These components are made of ABS or PP resin, and a thin film of a low-temperature-curable high-active oxide photocatalyst having a sample No. 86 is formed on the surface thereof. After forming a film of the silane coupling agent on the surface of the target component, the first layer is formed, and after forming this film, a low-temperature-curable high-active oxide containing AT0 of sample No. 86 is formed. A second layer of photocatalyst is formed.
  • the luminaire can be lit at any time during the drying operation or as an independent operation irrespective of the drying operation. It effectively oxidizes and decomposes organic substances and odorous substances contained in the air that comes into contact with it, thereby suppressing the growth of microorganisms and deodorizing.
  • the outer frame 1 is made of a zinc-plated steel plate, and the outer surface is coated with an epoxy resin powder. On the surface of this painted surface, a low-temperature-curable high-active oxide photocatalytic thin film containing ATo of sample No. 86 was formed.
  • the outer surface of the opening / closing lid 86 is made of an injection-molded body of PS resin, and a low-temperature curing type active oxide photocatalyst thin film containing ATO of sample No. 86 is also formed on this surface.
  • the effect of the photocatalytic thin film on the outer surfaces of the outer frame 85 and the opening / closing lid 86, which are these exterior components, is similar to the exterior components of Examples 1 to 4 described above. And the like.
  • FIG. 9 A dish dryer according to a sixth embodiment of the present invention will be described with reference to FIGS. 9, 10, and 11.
  • FIG. 9 A dish dryer according to a sixth embodiment of the present invention will be described with reference to FIGS. 9, 10, and 11.
  • FIG. 9 shows an external perspective view of the dish dryer.
  • FIG. 10 shows an enlarged sectional view of the vicinity of the exhaust port 128.
  • Fig. 11 shows a Si cutaway of the main body.
  • the inside of the main body 106 is divided into a drying room # 07 and an operation control room 108 by a partition plate 109 vertically.
  • a heating fan unit 114 for sending dry air consisting of a fan motor 110, a blower fan 111, a casing 112, and a heater 113 is provided in the operation control room 108.
  • a controller 11 is provided between the drying chamber 107 and an intake port 117 provided with an intake filter 116 connected with a duct 115 and the heating unit 114. 8 is provided.
  • An upper basket 119 and a lower basket 120 for storing tableware are arranged above and below the drying chamber 107.
  • the lower cage 120 is mounted on the lower part of the door 122 so that it can be freely tilted.
  • the MJ moving rail 123 is arranged on a roller (not shown) rotatably provided on a side wall of the drying chamber 107 so as to be movable back and forth.
  • the exhaust port provided on the panel 127 has a letter shape and is provided with an exhaust filter 122).
  • An opening 130 provided in the main body 10 (the cut-off plate 10) of the main body 10 and the exhaust duct 13 1 are connected to the drying unit 107.
  • Temperature detector 1 Numeral 32 is hardly affected by the outside air temperature. It is located inside the exhaust duct 13 1.
  • the intake port 1] 7 is an injection-molded product made of PP, and the intake filter 1-16 is a net made of Nylon.
  • the table t & i includes the sample No. shown in Table 7 below.
  • a thin film of low-temperature-curable highly active oxide photocatalyst was formed. Nets made of nylon, after ultraviolet irradiation treatment, samples N o. 9 1 of low-temperature curing type high active oxide photocatalyst containing silver in r intake filter one 1 1 6 surface of the thin film is formed of a chamber Because of the illumination light, attached organic matter and odorous substances in the air taken in are oxidatively decomposed.
  • the 91 is also formed on the exhaust port 128 and the exhaust filter 122 as well. Exhausted moisture is likely to condense around the intake and exhaust ports and become moist, and mold and bacteria may proliferate.However, if a photocatalyst with high decomposition efficiency according to the present invention is used, indoor light is effective. Proliferation of these microorganisms can be suppressed.
  • the silver contained in the composition! Particularly suitable because the body has antimicrobial activity. Zeola loaded with silver to enhance antibacterial effect Ceramic particles such as itaperite may be mixed.
  • a lighting fixture 13 4 with a fluorescent tube 13 8 is attached in the drying room 107.
  • the lighting function is turned on when the door 1 2 1 is opened to check the degree of drying of the internal dishes.
  • the upper basket 107 By forming a photocatalytic thin film on the surface of the internal component 107, an antibacterial and antifouling effect can be obtained in a portion irradiated with light.
  • the upper basket 107 By forming a photocatalytic thin film on the surface of the internal component 107, an antibacterial and antifouling effect can be obtained in a portion irradiated with light.
  • the upper basket 107 By forming a photocatalytic thin film on the surface of the internal component 107, an antibacterial and antifouling effect can be obtained in a portion irradiated with light.
  • the upper basket 107 By forming a photocatalytic thin film on the surface of the internal component 107, an antibacterial and antifouling effect can be obtained in a portion irradiated with light.
  • the upper basket 107 By forming a photocatalytic thin film on the surface of the internal component 107, an antibacterial and antifouling effect can be obtained in a portion irradi
  • the lower basket i 20 has a structure in which a boride-based powder resin is baked and painted on an iron frame. After the surface of this painted SH is subjected to ultraviolet irradiation, the sample No. A thin film of low-temperature curable high-active oxide photocatalyst containing copper of 92 is formed.
  • These upper and lower baskets are members that come into direct contact with tableware and are required to be clean.However, the effect of the photocatalyst provides antifouling on the surface and the effect of suppressing the growth of microorganisms. Will be kept. Copper, like silver, has its own antibacterial action, so its antibacterial effect is enhanced.
  • the door 121 is a force made of a molded article of ABS resin. On this surface, a low-temperature curing type highly active oxide photocatalytic thin film containing ATO of sample No. 86 is formed. The effect of the photocatalytic thin film on the surface of the door 121 is such that sufficient indoor stains and antibacterial effects can be obtained with room light, as in the case of the exterior parts of Examples 1 to 5 described above.
  • Example 7 A dishwasher according to a seventh embodiment of the present invention will be described with reference to FIGS. 12, 13 and 14.
  • Fig. 12 is a perspective view of the appearance of the dishwasher
  • Figs. 13 and 14 are sectional views of the dishwasher.
  • the tableware storage tank 1 36 is arranged inside the outer frame 135, and the front opening II is opened and closed. 8 is provided, and a downstream basket 13 9 for storing tableware is arranged on this step 13 8 in a detachable manner.
  • a pump i 4 () is disposed outside the bottom of the tableware storage tank 1 36.
  • This pump 14 () has a pump motor 14 1.
  • a lower arm nozzle 142 that pivots directly below the tableware lower basket 133 is hidden.
  • the upper arm i of the lower arm nozzle 142 is provided with a few small holes 144.
  • the lower basket for storing tableware 139 is provided with a bench lily tube 145 for sending the washing water sent from the pump 140 to the upper nozzle 144.
  • the upper arm nozzle 144 pivots about the center as a fulcrum immediately below the container storage upper basket 146.
  • a plurality of small holes 147 are provided on the upper surface of the upper arm nozzle 144.
  • a heater 148 is arranged at the bottom or back of the tableware storage tank 1:36.
  • a heater cover 14 9 is arranged so as to enclose the heater 14 8.
  • Tableware storage tank 1 36 A water supply solenoid valve 150 is arranged on the outer side surface.Tableware storage tank 1 3 6
  • An exhaust duct 15 1 is arranged on the upper outer surface and connected to the exhaust port 15 2
  • a control panel 15 3 is located on the top of the outer surface of the door 13 7.
  • a drain pump 15 4 and a ventilation unit 15 5 are located outside the bottom of the tableware storage tank 1 36. Are located.
  • water is supplied from the water supply solenoid valve 150, the pump i 40 is driven, and pressurized water is supplied to the lower arm nozzles 14 2 at the same time as the heater. Energize 1 4 8 to raise the water temperature.
  • the water spouts from the hole 144, when it is sent to the upper arm nozzle 144 through the bench lily tube 144, the water also spouts from the hole 144. In this way, the upper and lower arm nozzles rotate and evenly spray hot water onto the dishes in the dish storage basket 146 to remove dirt.
  • the drain pump 154 is turned on to discharge the wastewater, and the same operation as above is repeated several times to rinse and remove the internal dirt.
  • the operation moves to the drying operation.
  • the heater 1 148 is energized ONZOF P 'for a certain period of time, and cool air is turned into hot air. This hot air converts the water droplets and residual water inside and the water droplets attached to the tableware into steam, which is discharged through the exhaust duct 15 1 through the exhaust port 15 2 to the outside.
  • the exhaust port 152 is an ABS resin molded product, and a thin film of a low-temperature curing type highly active oxide photocatalyst containing silver of sample No. 91 is formed similarly to the above-mentioned dish dryer. Have been. Exhausted moisture tends to condense and become moist around the exhaust port, and molds and bacteria may proliferate.However, if a photocatalyst having high decomposition efficiency according to the present invention is used, indoor light can be effectively used. The propagation of microorganisms can be suppressed.
  • Lighting equipment 159 equipped with a fluorescent tube 158 is installed inside the tableware storage tank 135.
  • the lighting function is turned on when the door 13 7 is opened, and is used not only for the original function of lighting such as checking the degree of washing and drying of the dishes inside, but also for cleaning the inside of the dish storage tank 1 36.
  • the tableware storage upper basket 146 and the tableware storage lower basket 139 have a configuration in which a polyamide powder resin is baked and painted on an iron frame. In the sample, a thin film of a low-temperature curable high-active oxide photocatalyst containing copper of sample No. 92 is formed.
  • These upper and lower baskets are members that come into direct contact with tableware and are required to be clean.However, the effects of the photocatalyst can keep the surface clean and prevent the growth of microorganisms. It is.
  • Other members to which the light of the lighting equipment 159 is irradiated include a tableware storage tank 1336, an upper arm nozzle i44, a triarm nozzle 144, and a knuckle tube 145.
  • the parts used are PP resin injection molded products and SUS plastic deformed products. After corona discharge treatment on the surface of these components, a thin film of S iota 0 2 only, i.e. samples N o. 1 2 of Table 1 is formed as an underlying layer, after forming the membrane, Low temperature curing of sample No. 2] 3 ⁇ 4 A thin film of highly active oxide photocatalyst is formed.
  • T i 0 2 S i 0 2 according to the present invention is a basic material for low-temperature curing type high active oxide photocatalyst thin film is both a good material to water wettability, were removed from the soiled dishes Even if substances that repel water, such as oils and fats, adhere to them, they are decomposed by the light of the lighting equipment 159, so that the effect of always maintaining high water wettability can be obtained.
  • the washing operation involves raising the water temperature to 60 to 70 ° C during the final rinsing, raising the internal temperature, and then discharging the moisture out of the machine by blowing air.
  • Water droplets remaining inside 36 cause a decrease in drying efficiency.
  • Tableware storage tank 1 3 6, upper arm nozzle 1 4 4, lower Parts such as the nozzles 142 and bench lily tubes 1 and 4 are required to have high water resistance, so they are often made of hydrophobic materials and usually have poor surface wettability. On the surface of a material with poor water wettability, water does not spread in a film-like state and adheres in the form of droplets with a high contact angle.
  • a detergent containing a surfactant is added, so that the surface tension of the cleaning water decreases and the contact angle decreases, resulting in a well-wetted state. Very low in water, and the surface tension of water is very high. Therefore, at the end of the final rinsing, the rinsing water adheres in the form of countless water droplets having a high contact angle to the surface of each component inside the tableware storage vessel 1336.
  • the amount of residual water due to attached water droplets at the end of rinsing is In contrast to the case of about 30 g, when the photocatalyst film according to the present invention was formed, the amount of residual water attached was reduced to about 5 g.
  • the low-temperature curing type highly active oxide photocatalytic thin film according to the present invention has a high photoactivity and has an action of decomposing fats and oils attached by the light of the lighting equipment 159, so that the wettability due to the attachment of the fats and oils decreases There is no.
  • the dishes are shaded during the drying operation. Since the light does not reach evenly and evenly, it is more effective to use an operation program that turns on the light for a certain period of time after the drying operation is completed to decontaminate the inside of the tableware storage tank 136.
  • the door 1337 is a force made of a molded product of PP resin ⁇ After corona discharge treatment on this surface, a sample No. 12 is formed as an underlayer, and after this film is formed , Sample No. 2], a thin film of a low-temperature curing type highly active oxide photocatalyst is formed.
  • the effect of the photocatalytic thin film on the surface of the door 1337 is similar to the case of the exterior parts of Examples 1 to 6 above, in which the indoor light can provide sufficient antifouling and antibacterial effects. is there.
  • the stationary type dishwasher is described, but the effect of the photocatalytic thin film can be obtained in the same manner in the case of a tabletop type.
  • '4 Since the internal light is applied to the f-plane of the exterior component, it is effective to form a photocatalytic thin film on the side surfaces and the surface of the outer wall member on the ceiling.
  • FIG. 15 A kitchen waste disposal machine according to an eighth embodiment of the present invention will be described with reference to FIGS. 15 and 16.
  • FIG. 15 A kitchen waste disposal machine according to an eighth embodiment of the present invention will be described with reference to FIGS. 15 and 16.
  • Fig. 15 shows an external perspective view of the kitchen waste treatment machine
  • Fig. 16 shows a cross section of a wooden body.
  • the medium contains a culture substrate 165.
  • the culture substrate 165 is made by cutting sawdust, rice hulls, rice straw, etc., whose main component is fibrin, which is hardly decomposed by microorganisms such as lignin. Each grain is porous and has voids. It has a complex particle size and large voids are formed between the particles.
  • the rotating shaft 166 is provided with three stirring blades 161, supported by a bearing 1667 provided in the processing tank 16, and the end of the rotating shaft protruding on one side is a drive motor.
  • the transmission is connected with a transmission gear such as a chain with an appropriate reduction ratio.
  • the inner lid 1 7 1 has an upper panel at the upper opening 1 7 0 of the processing tank 1 6 4
  • ventilation fan 173, intake port 174, and exhaust port 175 are provided near the upper part of processing tank 164, and are generated in processing tank 164 by rotation of ventilation fan 173.
  • the exhausted cracked gas and water are discharged outside the machine through the exhaust port 175.
  • an appropriate net-like filter is disposed at each of the intake port 174 and the exhaust ports 1-5.
  • an opening / closing lid 1-6 of the intake port 17 is provided, and the intake port 174 is configured to be opened and closed by reciprocating a solenoid 177 mounted on the frame body 60.
  • an operation section 178 for operation is provided on the upper panel 172, and by this operation, the controllers 1.9 are operated, and the kitchen waste disposal machine is operated.
  • the culture substrate 165 needs to be replaced because the voids are filled with decomposed substances and the porosity decreases, making it impossible to process garbage. For this reason, a discharge port 180 and a discharge path 18 1 are formed at the bottom of the processing tank 16 4, and the culture body 16 5 that has fallen into the discharge path i 8 1 is ejected to remove the frame 160. Can be taken out of the room.
  • the air in the upper space of the culture substrate 1645 of the treatment tank 1664 contains a large amount of substances having high odor intensity, such as trimethylamine-methylmercaptan, ammonia, and hydrogen sulfide, as decomposition gas together with moisture. Due to the strong odor, the conventional kitchen waste disposal machine could not be installed in the kitchen, and when installing it in the veranda of an apartment house, there was a problem of odor leakage to the surrounding area.
  • substances having high odor intensity such as trimethylamine-methylmercaptan, ammonia, and hydrogen sulfide
  • adsorbents such as activated carbon ⁇ , manganese-based thermal decomposition catalyst
  • Various deodorizing mechanisms have been devised, but none of them was sufficient in terms of effect and life.
  • exhaust filters 18 2,] 83 are provided in the exhaust ports 1-5, and ultraviolet lamps 18 4 are provided in the gaps.
  • Exhaust filter — 18 2 has zeolite as a main component, and exhaust filter 18 3 has activated carbon as a Byone component. Each of them has a honeycomb structure, and ultraviolet rays emitted from ultraviolet lamps 18 4 are inside the honeycomb.
  • U The exhaust filters 18 2 and 18 3 have a low-temperature-curing ⁇ active oxide photocatalytic thin film of sample No. 62 as shown in the table on the inner surface of the honeycomb. Has been established.
  • the low-temperature curable high-active oxide photocatalyst according to the present invention has a high decomposition efficiency, and in applications where the load of organic substances is relatively small as in Examples 1 to 7 described above, the level of indoor lighting equipment, that is, the wavelength is 25 0-3 5 0 ultraviolet light (nm) is 0. 0 0 1 ⁇ 0. 0 1 m W Zcm 2 level illuminance 0 or by mounting a fluorescent lamp and white heat lamps,. 0 1 ⁇ 0. 1 m W
  • a force that could be decomposed by the _c! level illuminance for example, in the case of a ⁇ load of several ppm in ammonia concentration as in the present embodiment, it is necessary to arrange an ultraviolet ray generating means.
  • Ultraviolet lamps such as mercury lamps and metal halide lamps can be used.
  • the decomposition efficiency is higher than that of the conventional oxide photocatalyst, the deodorizing effect is large and the ultraviolet intensity is lower than that of the conventional oxide photocatalyst. It is smaller than when used.
  • the above-mentioned odorous substances are generated in the largest amount.
  • Exhaust filter 1 8 3 is activated carbon When the odor concentration is low, the activated carbon adsorbs the odor, and the adsorption efficiency gradually decreases as the amount of adsorption increases. Adsorbed malodorous substances can be decomposed and activated carbon can be regenerated.
  • the frame 160 is made of painted steel plate, and the outer lid 1 11 is made of an injection-molded product of PP resin. This surface is coated with an organic coating film of chlorinated polyethylene. On the surface of the film, a thin film of a low-temperature curing type highly active oxide photocatalyst of Sample No. 21 was formed.
  • the effect of the photocatalyst thin film on the surface of the outer frame 160 and the outer lid 171, as in the case of the exterior parts of Examples 1 to 7 described above, has the effect of sufficient antifouling and antibacterial effects with room light. Is obtained.
  • garbage is handled, so that these exterior parts are often stained with juice dripping from the garbage.
  • sunlight is irradiated on these exterior parts.
  • Ultraviolet light illuminance wavelength 2 5 0-3 5 0 sunlight (nm) is 0. 1 ⁇ 5. 0 m W / cm 2 level and a high strength as compared with the room lighting or the like, is dirty juice such garbage Can also be decomposed.
  • Example 9 To prepare a solution prepared by dispersing T i ⁇ 2 fine particles S i 0 2 sol. Using this solution, a film was formed on the PET film, and the PET film shown in Fig. 17 was produced. The procedure is shown below.
  • Nitsu solution dispersed with T i 0 2 fine particles is described in S i ⁇ 2 sol.
  • the concentration of the ⁇ form was 4 wt% and required. weight aqueous added to adjust the subsequent 2 4 hr volume to disperse the T i 0 2 particles in S i 0 2 sol using Jirukoniaboru of 5 ⁇ -. treated with mill, S i 0 2 sol in to prepare a solution prepared by dispersing T i 0 2 fine particles.
  • the Ti 0 and Si 2 sol prepared by dispersing fine particles were coated on PET film 185 and irradiated with a low-pressure mercury lamp (intensity: 15 mW / cm 2 ) at 120 ° C. to form a Plasti Kkufirumu with a T i 0 2 particles 1 8 7 Ding was dispersed i ⁇ 2 dispersion S i ⁇ 2 film 1 8 8 Coat in S i 0 2 film 1 8 6 was treated for 5 minutes with.
  • the thin film obtained on the PET film 185 had good film quality and strength, and the thickness was 300 nm.
  • the activity of decomposing organic substances by the titanium oxide was evaluated.
  • the activity test was performed by coating a red-violet organic dye on the thin film and irradiating 1 (mWZcni 2 ) light at 254 nm.
  • the decomposition rate was determined from the change from the initial transmittance of the dye.
  • FIG. 20 shows the results.
  • T i 0 having a photocatalytic function
  • the film forming method of the present invention can be manufactured at a temperature of about 12 (TC and can be applied to a plastic material other than a Pyrex glass substrate. Because of the need for temperature, application to plastic products is difficult, and it takes more than 10 minutes to crystallize Ti.On the other hand, the manufacturing method of the present invention enables film formation at low temperatures. As a result, there are plenty of substrates that can be used, photocatalysts can be deposited on any surface ifi, and processing time can be as short as a few minutes, which can significantly reduce production costs.
  • Figure 21 shows the results of plotting the effect of adding a cocatalyst on electronegativity. The smaller the electronegativity seems to be, the more effective it is. In particular, since Li Na and Mg are effective, it was found that not only the electronegativity but also the ionic radius was important.
  • Figure 22 shows the relationship between 10; qi-negativity, the ion radius, and the effect of addition. Thus, it was found that it is effective to add an ion having an electronegativity of less than 1.6 and an ionic radius of less than 0.2 nm and having a valence of 2 or less. (Example 10)
  • the S i 0 solution prepared by dispersing the different T i 0 2 fine particle Kai 2 sol was several prepared.
  • T i 0 2 / S i 0 2 ratio is set to 9 in a weight ratio
  • L i added amount was set to 5 wt%
  • Example 1 similar operation at T i 0 2 dispersion S i 0 2 film on the PET film The decomposition rate after 10 minutes was measured using an organic dye.
  • Table 2 shows the conditions and test results of the prepared samples. Ri by these results, the size of the dispersed T i 0 2 particles were found to be. 8 to 0 nm is most effective. As described above, the decomposition rate changes depending on the particle size, and when the ratio T i 0 2 / S i 0 2 is further reduced, the optimum particle size of the T i ⁇ 2 fine particles changes, but in the range of 5 to 20 nm. If so, the decomposition rate was good. Therefore, it was found that the Ti 0 2 particle size of the Li added catalyst should be 5 to 20 nm. The above results were the same for Na, K, Mg, Ca, Sr, and Zn other than Li.
  • Example 11 L i added amount in Table 3 shows the results of examining the T i O z ZS i 0 dye decomposition rate when, varying (1 0 minutes after decomposition rate) and membrane strength.
  • the preparation of the solution and the film formation method were performed in the same manner as in Example 1. From these results, it was found that the conditions under which both the decomposition rate and the film strength were effective were that the amount of Li added was 0.5 to 20 wt% and the Ti 0 2 ZS i ⁇ 2 was 9 to 5.
  • the third table and i added amount, T i 0, / S i 0 decomposition rate Sample No. amount of dye to 2 ratio (%) Ti0 2 / SiO z ( weight ratio) after 10 minutes degradation rate film strength
  • the Table 4 shows the results of examining the dye decomposition rate and film quality, varying T i 0 2 / S i 0 2 and the film thickness.
  • the solution preparation and film formation were performed in the same manner as in Example 1, but the film thickness was adjusted by changing the solid content of the solution from 0.5 to 8 wt%.
  • Results thickness was found to be 1 0 0-5 0 0 if nm T i 0 2 / S i 0 decomposition rate without being affected by 2 ratio, both film quality is good.
  • the in Table 5 is an oxide semiconductor other than T i 0 2 lambda T_ ⁇ , ⁇ T_ ⁇ examines the dye decomposition rate when adding a Z n 0, F e z ⁇ 3, C r 2 ⁇ 3 particles Results Indicated. Incidentally, in tests examining the dye decomposition rate, the intensity of the UV lamp (254 nm) was 0. 2 m WZ cin 2. In addition, unless otherwise noted, the dye decomposition test after this example was performed under the above conditions. Results AT_ ⁇ a F e 2 0 3, C r 2 ⁇ 3 fine particles added is effective, the amount is effective if the addition in either case, in particular ⁇ 0 ⁇ 2 0 wt% is S also effective there were.
  • the electron affinities of the constituent elements of each oxide are as follows, and it is effective to use an oxide semiconductor with a constituent element having an electron affinity of 1.2 oV or more. I was separated.
  • Electron affinity (eV) 1.25 1.2 0 0.2 1 1.2 3.16 3.54
  • Papermaking create the S i ⁇ 2 solution containing dispersed particle diameter 5 nm T i ⁇ z particulates in the sol, this A g, P t, P d , R h, N i, C u, R u 0 , fine particles were added 2 wt% with respect to T i 0 2 respectively.
  • T i 0 2 / S i ⁇ 2 ratio was 9 by weight.
  • the Li-added photocatalyst and the Li-free photocatalyst prepared in Example 1 using a fluorescent lamp, sunlight, an incandescent lamp, and a mercury lamp, the cigarette canister and the acetate lamp were used. The degradation characteristics of aldehyde, urea, and E. coli were compared. As a result, as shown in Table 8, the decomposition characteristics of citric acid, acetate urea, urea, and Escherichia coli were higher than those of the Li-free photocatalyst, no matter which lamp was used. It turned out to be 5 times as effective. As described above, it was found that the Li-added catalyst can provide a sufficient effect not only with the ultraviolet lamp but also with the lamp used in the living environment. Similar effects were obtained when Na, K, Mg, Ca, Sr, and Zn other than Li were added.
  • a typical airborne contaminant in a room is tobacco smoke.
  • Tobacco smoke is a suspension of fine particles of tar substances and soots. These fine particles form a film on the filter and accumulate, and the filter gradually turns brown and becomes dirty. Dirt from the smoke of the tobacco was evaluated.
  • the front is a suction side of ventilation fan air volume is 5 (m 3 min), the subject area and fixed copy and paste the polyester fiber nonwoven filter one 1 O cm X 1 O cm.
  • the ventilation fan with the nonwoven fabric was placed in a container having a capacity of 45,000 (cm 3 ) and sealed.
  • a cigarette smoke generator was provided in the container.
  • the cigarette smoke generator has a tube attached to the filter of the lit cigarette, which is connected to a diaphragm pump.
  • a low-temperature curable high-active oxide photocatalytic thin film according to the present invention is formed on the fiber surface of this nonwoven fabric filter.
  • the creation method was the same as that described in Example 9. Force that is targeted to the PET film in Example 9, where, in a solution prepared by adding lithium nitrate solution prepared by dispersing Ding i 0 2 particles in S i ⁇ 2 sol ⁇ , surface oxidation by ozone atmosphere After immersing the treated non-woven fabric filter and holding it for 1 minute, pull up the filter and disperse the unnecessary solution by air blow, then use a low-pressure mercury lamp (strength: 15 m (W / cm 2 ) while irradiating for 5 minutes to cure the film and form a photocatalytic thin film on the fiber surface.
  • the composition of this film is sample No.
  • Fig. 23 shows the degree of contamination of the filter over time when a smoke filter test was performed under the same conditions. This is the result of evaluation. Compared to the accession Lil fibers untreated, T i 0 2 and S i 0 2 If the marked with oxide photocatalytic thin vitreous whose components are about 50% discoloration quickly, i.e., about 50% The smoke collection efficiency has been improved.
  • Fig. 24 shows that the filter that has absorbed smoke under the above conditions and illuminated with a fluorescent lamp irradiates the filter that turned brown, and the photocatalyst decomposed the adhering substances, and the discolored filter returned to its original color.
  • sample No. 12 is a formulation according to the present invention to which Li N ⁇ 3 was added, and it can be seen that the rate of bleaching was greatly improved, especially in the initial stage.
  • the above-mentioned ventilation fan was operated between closed 6 tatami mats (approximately 20 m 2 ). In this case, 20 tobaccos were burned, which corresponded to the amount of dirt after 120 minutes of operation.
  • the incandescent lamp disposed inside the container was turned on so that the light hit the entire surface of the filter.
  • the ammonia gas concentration in the container was measured over time, and the ammonia decomposition effect was evaluated. The results are shown in FIG. 26.
  • sample No. 12 was similarly evaluated by forming a thin film on the surface of the molded plate.
  • the fouling of cigarette smoke in the same way as above. After the ABS plate in the central portion 5 cm X 5 cm of the arrangement portion of the r filters one of investigations in exactly the same configuration as the test of the above-mentioned non-woven filter one were fixed by burning 1 0 cigarettes The ventilation fan was driven for 120 minutes, and the white ABS plate was stained brown. The ABS plate was removed, light was irradiated under various conditions in the same manner as in the above, and the removal rate was evaluated by measuring the color difference before and after that. The results are shown in FIG.
  • sample N o. 8 6 is Yes formulated as ATO also added ingredients, in addition to L i N 0 3, sample N o. Compared 1 1, have been obtained yet slightly higher decomposition efficiency.
  • N o 2 is L i N ⁇ 3 according to the present invention.
  • the decomposition efficiency was greatly improved by the addition of, and the decomposition efficiency was approximately twice as high as that of the sample No. 11.
  • Examples include a silane coupling agent and an organic titanium-based compound.
  • silane coupling agent examples include vinyl tris (/ 9 methoxy methoxy) silane, vinyl triethoxy silane, vinyl thymethoxy silane, ⁇ - (methacryloxypropyl) trimethoxy silane, ⁇ (3,4) Ethoxyl hexyl) Ethyl trimethoxy silane, ⁇ -glycidoxypip pyridine methoxysilane, ⁇ —Glycidoxypropyl methyljetoxirane, ⁇ — / 9 (aminoethyl) ⁇ —Aminobutyl propyl trimethoxy Orchid, ⁇ - ⁇ (aminoethyl) ⁇ -aminopropylmethyldimethoxysilane, ⁇ -aminopropyltriethoxysilane, ⁇ -phenyl, ⁇ -aminopropyltrimethoxysilane, ⁇ -mercaptopropyltrimethoxysilane, etc. Can be used.
  • titanium ester titanium acetate, and titanium chelate can be used.
  • Tan Tetra_n—Butoxytitanium, Tetrakis (2-Ethylhexyloxy) Titanium, G i—Propoxy'bis (acetylacetonato) Titanium, Titanium-I-Proboxoxyoctylene glycolet And titanium stearate are effective.
  • a method of oxidizing the surface of an object using various surface modifying means to introduce a hydroxyl group, a carbonyl group, a carboxyl group, or the like, and firmly bonding the low-temperature-curable active oxide photocatalytic thin film according to the present invention is also effective. There is.
  • a relatively hydrophilic resin such as a polyamide resin or a polyester resin
  • a high adhesive force can be obtained without the above-mentioned pretreatment, but a polyolefin resin is not suitable for a crystalline resin. It is effective to perform these pre-processing.
  • the scope of application to which the present invention is applied is not limited to the devices described above with reference to specific examples.
  • the principle of the present invention is that the irradiation of an electromagnetic wave of a specific wavelength such as ultraviolet light can promote the polymerization of an inorganic polymer.
  • T a point to form a thin film of the inorganic photocatalysts for the i 0 2 as a main component, the lability of the photocatalyst mainly comprising this Ding i 0 2 addition of various components
  • photocatalytic functions can be provided. Organic substances can be decomposed on the surface of unprecedented low heat-resistant materials with weak light intensity unlike before.
  • semiconductors and conductive fine particles that lower the surface resistance of the film an antistatic effect on the surface of the coating film can be obtained, so that dirt due to static electricity is reduced.
  • the light applied to the surface of the component on which the photocatalytic film is formed is the power of a fluorescent lamp, an incandescent lamp, a mercury lamp, sunlight, or the like; Absent.
  • a fluorescent lamp an incandescent lamp, a mercury lamp, sunlight, or the like
  • Absent the effect can be obtained even if the light is transmitted through a component made of a transparent material such as a transparent plastic or glass.
  • transparent plastic examples include ⁇ ⁇ ⁇ ⁇ , AS, PC, ⁇ BS, Particularly preferred are PVC and poly (4-methylpentene) -i (TPX). Further, these transparent plastic materials may be colored by mixing a pigment or a dye. However, when colored, yellow or red-green colored is not preferred because it absorbs short wavelength light and reduces the decomposition effect. A preferred color tone is blue or black (smoke).
  • the value a is in a range from a fixed value to a fixed value.
  • Figure 29 shows the results of evaluating the relationship between these colors and the separation efficiency.
  • a plate made of PMMA resin and colored with various pigments under the same conditions as the test in Fig. 24 five cigarettes were burned and attached to the filter.
  • the decolorization and decomposition rate of the smoke stain was measured.
  • the photocatalyst material used is the sample No. 2 in Table 1, and the PMMA resin is a 2.0 mm (mm) thick steel plate made by coloring Acrypet MD of Mitsubishi Rayon Co., Ltd. in each color. Used. This is a resin to which an ultraviolet absorber is added, and absorbs ultraviolet light near 360 (nm).
  • 29 is 2 It shows the decolorization rate obtained from the change in color difference after irradiating a filter with 40-watt fluorescent light at a distance of (m) for 20 hours to a dirty filter.
  • Each chromatographic plate of the sample was placed on a soiled filter, illuminated by passing through a fluorescent lamp, and the decomposition rate was calculated based on the degree of decolorization.
  • the product can withstand continuous use without accumulation of smoke stains.
  • This test complies with JI S-Z-8730 (color difference display method).
  • the measuring instrument used was Z 1001 DP manufactured by H-Hon Denshoku Kogyo Co., Ltd., in accordance with JI S-Z-8722. It is.
  • As a measurement sample the transmitted light of a 2.0 (mm) thick plate was measured.
  • the attached organic matter can be effectively decomposed, so that an air flow is generated.
  • any device having a structure that filters the air flow can be applied to any product.
  • it can be applied to oil heaters, gas fan heaters, electric heaters, and kotatsu as heating appliances. It can be similarly applied to air conditioners, dehumidifiers, and cool air fans. It can also be applied to heating and ultrasonic humidifiers. It can also be applied to heating utensils such as ovens and electromagnetic cookers. It can also be used for hair dryers. Further, it can also be used for devices having a cooling fan. That is, various kinds of computers such as a personal computer, a processor, and the like, displays of such computer equipment such as a cathode ray tube, and a copy machine.
  • the low-temperature curing type highly active oxide photocatalyst thin film similar to the present invention can be provided also on the intake and exhaust ports used for ventilation of the air, and on a part of the filter attached to the intake and exhaust ports, and the same effect can be obtained. it can.
  • ⁇ ⁇ Solution was prepared as follows. And dissolve the S n C Mr. propanol Lumpur, was prepared 1 0 wt% S N_ ⁇ z solution. Also, to prepare 4 w L% S b 2 ⁇ 5 made by dissolving Lee Sopurobokishia Nchimon propanol. Then these two solutions was equivalent mixing molar ratio of 1 to the S n () 7: 1 2-amino ethanol was added, followed by the addition of 4 moles of water with respect to S N_ ⁇ z , 5 wL% ATO solution was prepared.
  • R u 0 2 - ATO solution the AT 0 solution by dissolving ruthenium ⁇ cetyl ⁇ cetearyl over Bok 0.0 5 wt% R u 0 2 - was 5 wt% AT 0 solution.
  • AT 0 and R u 0 2 - shows a AT_ ⁇ added T i 0 2 powder method of producing.
  • Photocatalyst coating solution was prepared by adding a predetermined amount of the previously prepared powder into a 4 wt% S 1 Oz sol and adding zirconia balls. The mixture was milled for 20 hours to prepare a coating solution. A filter made of acrylic fiber is immersed in the coating liquid prepared in this way, and the excess coating liquid is removed by air blowing.
  • the composition of each photocatalyst was as shown in Table 10 below.
  • the film forming method of the present invention can be manufactured at about 120 ° C., and can be applied to plastic materials other than Pyrex glass substrates.
  • the ordinary Zosol gel method requires a temperature of about 40 CTC, which makes it difficult to apply it to plastic products, and requires more than 10 minutes to crystallize T i 0,.
  • the film formation method of the present invention can form a film at a low temperature, a variety of substrates can be used, and a photocatalyst can be formed on any surface.
  • the processing can be performed in a short time of several minutes, and the production cost can be significantly reduced.
  • a photocatalyst filter it can be applied to an air washer or the like.
  • a photocatalyst filter having the composition shown in Table 10 was attached to an air washer and operated in a room full of tobacco smoke, and the filter absorbed the tobacco smoke to discolor. Take out this discolored filter and irradiate it with fluorescent light The color change was measured to determine the decomposability of the adsorbed tobacco smoke. The decomposition rate was calculated from the amount of discoloration measured by a colorimeter.
  • Table 10 shows the decomposition rate 5 hours after irradiation with a fluorescent lamp.
  • the decomposition rate of ⁇ ⁇ 0 added catalyst is larger than that of ⁇ ⁇ ⁇ non-added catalyst.
  • Ru0 2 one AT 0 added is further summer decomposition rate is large, it can be seen that R U_ ⁇ z, AT O added pressure is effective.
  • ATO has an electron affinity that is slightly smaller than T i ⁇ , and there is almost no difference between them.
  • This 0 A T is a conductive oxide has high wire carrier rear density, a large amount of carriers AT 0 is injected into the T i ⁇ 2, the activity of the photocatalyst is improved.
  • AT0 has attracted attention as a conductive oxide, and ultrafine particles (particle size of 200 angstrom or less, particularly preferably from 20 angstrom to 100 angstrom or less are commercially available) are commercially available.
  • T i ⁇ 2 photocatalyst by adding ultrafine particles AT O easier ATO additive pressurized T i 0 2 photocatalyst can be manufactured.
  • a p-type conductor R U_ ⁇ z is, T i 0 2 is an n-type semiconductor, to attract Hall of 3 ⁇ 4 child and holes lambda TO has generated absorbs light, the recombination of electrons and holes Can be suppressed. Therefore, 12 atoms and holes generated by absorbing light can be effectively used for the catalytic reaction, and the decomposition rate can be further improved. Due to the above effects, the decomposition performance of the photocatalyst was improved in the present invention.
  • the performance of the photocatalyst can be further improved by adding not only ATO but also other additives.
  • Table 11 shows the composition of the catalyst obtained by adding L1, Na, and Mg to the photocatalyst prepared in Example 16 and the results of the cigarette smoke decomposition test. The results show that the decomposition rate is improved regardless of whether Li, Na, or Mg is added, and that a higher performance filter can be manufactured.
  • L i, N a, and M g have an ion radius close to the ion radius of T i, and easily penetrate T i defects on the surface of T i O 2 to increase the stability of the crystal. Since i, Na, and Mg have strong ionicity, they can easily attract electrons, absorb light, separate electrons and holes, and increase the reaction efficiency.
  • the RS0 solution was prepared as follows. Ruthenium acetyl acetate was dissolved in propanol to prepare a 2 moi% Ru 0, solution. Also,
  • the powder was once dried at 250 ° C. in an evaporating dish to obtain a powder, and then treated at 850 ° C. for 5 hours to prepare an RS 0 powder.
  • 3_Rei added Ding ⁇ shows photocatalytic Koti packaging liquid manufacturing procedure and RS 0 added T i 0 2 method for producing the photocatalyst filter.
  • the film formation method of the present invention can be manufactured at about 120 ° C., and can be applied to plastic materials other than Pyrex glass substrates.
  • the ordinary sol-gel method required a temperature of about 400 ° C, which made it difficult to apply to plastic products.It took more than 10 minutes to crystallize T i 0, It is.
  • the manufacturing method of the present invention since the film formation is a “J-function” at a low temperature, the usable substrate is abundant, and the photocatalyst can be formed on any surface.
  • a photocatalyst filter it can be applied to an air washer, etc. In this case, removal of odorous components, bacteria, tobacco smoke, etc. existing in the air.
  • a filter with a photocatalyst loses its effect after saturated adsorption and needs to be replaced, because a normal filter is an adsorbent for removing and absorbing water. Fine ffl, tobacco smoke, etc. can be removed by the photocatalyst Sakugawa, so the number of filter replacements can be reduced. If a photocatalyst filter with the composition shown in Table 12 is installed in an air washing machine, this smoke will be removed. Operates in a full room Tobacco smoke was adsorbed to the filter 1 and the color was changed. The discolored filter was taken out, the color change was measured by irradiating a fluorescent lamp, and the decomposability of the adsorbed tobacco smoke was examined. The rate was calculated from the amount of discoloration measured by a colorimeter.
  • Table 12 shows the decomposition rate 5 hours after irradiation with a fluorescent lamp.
  • the decomposition rate of the R S0 -added catalyst was higher than that of the R S0 -free catalyst, indicating that the addition of R S0 was effective.
  • RSO added photocatalyst by 13 ⁇ 4 3 0 and T1s 0 2 contacts, by a hole in the RSC) is T i 0 2 photocatalyst utilized, you increase the performance of the photocatalyst.
  • the oxidation activity of the photocatalyst is due to the oxidation-reduction of electrons and holes generated by light absorption. In particular, the generated holes generate hydroxyl radicals and cause a strong oxidizing action.
  • RS 0 is a p-type semiconductor and has a large number of holes.
  • Table 13 shows the composition of the photocatalyst prepared in Example 19 to which, Na and Mg were added, and the results of the cigarette smoke decomposition test. The results show that the decomposition rate is improved regardless of whether Li, Na, or Mg is added, and that a higher-performance filter can be manufactured.
  • L i, N a, and M g have an ion radius close to the ion radius of T 1 and easily enter T i 0, the T i defect in table fii, and increase the stability of the product.
  • i, ⁇ :; M g may easily attract electrons for strong ionic, electrons and holes generated by absorption of light is separated to increase the anti ⁇ rate.
  • the force also RS 0 particles in contact with T i ⁇ 2 particles present; uses S i 0 2 as Vine da one since also the particles present in S i 0 2, efficient at an unsupported.
  • the RS 0 solution can be added to the T i 0 2 fine particles beforehand and fired, the contact area between the RS 0 and the T i ⁇ 2 particles will be large, the bonding state will be good by firing, and the electrons between heterogeneous semiconductors will be improved. Movement becomes smooth.
  • RS ⁇ does not crystallize and does not function as a p-type semiconductor.
  • T i ⁇ 2 the crystal becomes rutile at 6 0 0 ° C or higher. It is the anatase type that expresses a sufficient function as a photocatalyst. With the rutile type, the performance of the photocatalyst drops rapidly. Therefore, if the high temperature processing T i 0 2 after RSO addition, RS 0 is the force to be a p-type semiconductor, T i 0 2 is a phase transition to a rutile type, lose the function as a photocatalyst.
  • ST0 powder was produced as follows. The Lee Seo propoxy titanium Natick Bok dissolved in pro Pano Ichiru to prepare a 2 mol% T i ⁇ 2 solution, followed by Ding i (molar ratio relative to input L: 1 of S r (N_ ⁇ 3) 2 was added , T i 0 2 molar ratio to 1: 1 2-amino Noetano one Sole added followed by the addition of 4 moles of water with respect to T 1 ⁇ 2, to prepare a 1 mol% ST 0 solution .
  • the prepared RS ⁇ -added ST ⁇ photocatalyst is composed of ST ⁇ powder that has been sintered and grown at high temperature, and thus has a slightly poorer adhesion to the acrylic fiber than the TiO-based one, but looks beautiful.
  • the composition of each photocatalyst is as shown in Table 14.
  • a photocatalyst filter having the composition shown in Table 14 was attached to an air washer and operated in a room full of tobacco smoke, and the filter absorbed the tobacco smoke and discolored.
  • the discolored filter was taken out and irradiated with a fluorescent light to measure the color change, and the decomposability of the adsorbed tobacco smoke was examined.
  • the decomposition rate was calculated from the amount of discoloration measured with a colorimeter.
  • Table 14 shows the decomposition rate 5 hours after irradiation with a fluorescent lamp.
  • RS 0 added ST0 catalyst decomposition rate than the RSO added T i ⁇ 2 catalysts are greatly summer, it can be seen that RS0 added S Ding 0 is valid.
  • the performance of the photocatalyst can be further improved not only by adding R S0 but also by adding other additives.
  • Table 14 shows the composition of the catalyst prepared by adding Na and Mg to the prepared R S0 -added STO photocatalyst and the results of the cigarette smoke decomposition test. The results show that the decomposition rate is improved when any of Li, Na and Mg is added, and a more efficient filter can be produced.
  • Li, Na, and Mg have ionic radii close to the ionic radius of Ti, and easily penetrate Ti defects on the ST0 surface to increase the stability of the crystal. Since Li, Na and Mg have strong ionicity, they can easily attract electrons and absorb light to separate generated electrons and holes, thereby increasing the reaction efficiency.
  • the STO photocatalyst filter with the addition of RS 0 has slightly poor adhesion as described above. Therefore, by mixing a good T i ⁇ 2 system adhesion were prepared Koti ring photocatalytic filter foremost accession Lil fibers. Composition and tobacco smoke The degradability is shown in Table 15. As a result, good results were obtained in both adhesion and decomposition of tobacco smoke, and a high-performance photocatalyst could be produced.
  • the p-type semiconductor RS 0 injects holes into the STO, or ST ⁇ absorbs light and attracts the holes out of the holes formed by the absorption of light. Coupling can be suppressed. Therefore, electrons and holes generated by absorbing light can be effectively used for the catalytic reaction, and the decomposition rate can be further improved. According to the effects described above, the decomposition performance of the photocatalyst could be improved in the present invention.
  • the solid content was adjusted to 4 wt.% And adjusted by adding necessary amount of water.
  • the ⁇ click Lil fibers were produced in the ZSM 5 added T i 0 2 fine particle dispersion S i 0 2 sol co one Bok to, T i O was treated 5 min at 1 2 0 ° C in S i 0 2 film z particulates and Z SM- 5 was formed T i O z dispersion S i 0 2 film filter one who co Bok the dispersed.
  • a photocatalytic filter As a photocatalytic filter, it can be applied to an air washer or the like. In this case, it is possible to remove malodorous components, bacteria, cigarette smoke, and the like that are present in the air. In particular, saturated filters are used because ordinary filters use an adsorbent to remove them. The effect is lost after wearing, and the filter needs to be replaced.On the other hand, filters with photocatalysts can remove adsorbed odor components, bacteria, tobacco smoke, etc. by photocatalysis, so the number of filter replacements should be reduced. Can be.
  • the photocatalyst filter prepared above was sealed in a glass container, and gas aldehyde, which is a gas component, was injected at 400 ppm, and the inside of the container was circulated with a fan to irradiate a fluorescent lamp to examine the photocatalytic performance.
  • the gas was analyzed by connecting an infrared detector and circulating the gas, and the gas was always measured. The measurement results are shown in FIG. In the absence of zeolite, the acetate aldehyde starts at the beginning; S decreases sharply and then gradually decreases. When the gas is injected, it returns to the initial value, and when this operation is repeated, Adsorption and decomposition reactions reach equilibrium.
  • the addition of zeolite improves the antibacterial properties of the dark reaction, and if Cu and Ag ions are exchanged, the performance is improved both during light irradiation and during the dark reaction.
  • the agent could be prepared.
  • photocatalysts can be formed on any material surface, providing highly active photocatalysts that are effective in the living environment, and efficiently removing gas components in the air by adsorption effects and decomposition reactions.
  • the concentration of form components was 4 w 1.% and adjusted by adding necessary amount of water.
  • the Jirukoniaboru was treated with 2 4 hr baud mill to disperse the T i O z particles to S i 0 2 sol, S i 0 2 T i 0 in the sol, dispersing fine particles A solution was prepared.
  • T i () fine particle dispersion prepared on the acrylic fiber is coated.
  • the S i O z sol is coated, and the mixture is treated with 12 (TC for 5 minutes to disperse the Ti ⁇ z fine particles in the S i O 2 film.
  • a filter 1 coated with a Ti iz dispersion Sio 2 film was formed, and the composition of the produced photocatalyst is shown in Table 16.
  • a photocatalyst filter As a photocatalyst filter, it can be applied to an air washer or the like. In this case, it is possible to remove malodorous components, bacteria, cigarette smoke, and the like that are present in the air. In particular, ordinary filters are absorbed and removed by an adsorbent, so the effect is lost after saturated adsorption and the filter needs to be replaced. On the other hand, a filter with a photocatalyst removes adsorbed malodor components, bacteria, cigarette smoke, etc. Since it can be removed by photocatalysis, the number of filter replacements can be reduced.
  • a photocatalyst filter with the composition shown in Table 16 was attached to the air washer, It was operated in a room full of cigarette smoke, and the filter absorbed the cigarette smoke and discolored it. The discolored filter was taken out and irradiated with fluorescent light to measure the change in color, and the decomposability of the adsorbed tobacco smoke was examined. The decomposition rate was calculated from the amount of discoloration measured by a colorimeter.
  • Fig. 34 shows the results of the decomposition test. The results showed that the decomposition performance was improved by adding the blue pigment.
  • Table 16 shows the results of evaluating the film strength and light resistance other than the decomposition performance : each evaluation was performed as follows.
  • the produced filter was repeatedly bent and pulled to evaluate whether the powder fell. If the powder did not fall due to bending and pulling, repeated bending and pulling were performed, and then air was blown at ZmZsec to check whether the powder peeled off.
  • the evaluation was rated as X when peeled by bending or pulling, rated as ⁇ when peeled by blowing air when not peeled, and rated as ⁇ when peeled in any case.
  • the light fastness was measured by irradiating the fabricated filter with a low-pressure mercury lamp (254 nm, 3 mW cm ') and measuring the time when the change in color reached 20% or more.
  • the evaluation results showed that the addition of a pigment reduced the film strength, and that the film easily peeled off at 20 wt% or more. It can be easily peeled off, but if there is no bending or pulling operation, it will not be peeled off.
  • pigments are excellent in light resistance, they contain organic groups and are gradually decomposed by photocatalysts.
  • the condition usually used is the light of a fluorescent lamp, and the 35 hours in Table 16 is equivalent to 3 to 5 years under the fluorescent lamp.
  • the pigment-added catalyst is inferior in film strength and light resistance, but since the filter catalyst is colored, the performance of the filter can be seen, so that it is easy to judge when to replace the filter. .
  • an excellent filter can be manufactured by adding a pigment and, if necessary, a resin.
  • the degradation characteristics of acetate aldehyde, urine, ammonia, and Escherichia coli were compared between the pigment-added photocatalyst and the pigment-free photocatalyst prepared in Example 25 using a fluorescent lamp, sunlight, a heating lamp, and a mercury lamp. .
  • the decomposition characteristics of acetate, urea, ammonia, and Escherichia coli were 3 to 5 times as effective as those of the pigment-free photocatalyst, regardless of the lamp used.
  • the pigment-added catalyst was able to obtain a sufficient effect not only with an ultraviolet lamp, but also with a lamp used in a living environment. In addition, the same results were obtained when red, green, green, etc. other than blue were added.
  • a photocatalyst can be formed on any material surface, a highly active photocatalyst effective in a living environment can be provided, and the photocatalyst can be easily replaced.
  • S i 0 2 sol preparation method 5 g of tetraethoxysilane was dissolved in 100 ml of a mixed solution of water, ethanol and propanol (3:27:70) and stirred at 40 "C for about 5 hours. The solution was left at room temperature for 2 weeks to obtain S i 0, sol.
  • Table 18 shows the composition of the prepared photocatalyst.
  • a photocatalyst filter As a photocatalyst filter, it can be applied to an air washer or the like. In this case, it is possible to remove malodorous components, bacteria, cigarette smoke, etc., which are present in the air blister. In particular, since ordinary filters are absorbed and removed by an adsorbent, the effect is lost after saturated adsorption and must be replaced. On the other hand, filters with photocatalysts absorb adsorbed odor components, bacteria, cigarette smoke, etc. Can be removed by photocatalysis, so that the number of filter replacements can be reduced.
  • a photocatalyst filter having the composition shown in Table 18 was attached to an air purifier and operated in a room full of tobacco smoke, and the filter absorbed the tobacco smoke and discolored.
  • the discolored filter was taken out and irradiated with fluorescent light to measure the change in color, and the decomposability of the adsorbed tobacco smoke was examined.
  • the decomposition rate was calculated from the amount of discoloration measured by a colorimeter.
  • Figure 35 shows the results of the decomposition test.
  • S i 0 2 a (Circa) as a by-Nda
  • performance as a photocatalyst beat low when the amount of the binder increases.
  • acrylic resin it was found that the performance of the photocatalyst hardly changed even if the amount of the binder was large.
  • Table 18 shows the results of evaluating the film strength, light resistance, and washing test in addition to the decomposition performance. In addition, each evaluation was performed as follows.
  • the light fastness was measured by irradiating the fabricated filter with a low-pressure mercury lamp (254 nm, 10 mW / cm 2 ) and examining the time when the amount of color change was 20% or more. In the water washing test, the filter was repeatedly washed with water, and the number of times until the catalyst was peeled was evaluated.
  • the evaluation results showed that the addition of an acrylic resin improved the film strength, and that the film did not peel off at 5 wt% or more.
  • the light resistance it was found that the larger the amount of the acrylic resin added, the greater the deterioration.
  • the acrylic resin contains an organic group and is gradually decomposed by a photocatalyst.
  • this evaluation condition is quite accelerating, the condition usually used is the light of a fluorescent lamp, and 5 hours in Table 18 is equivalent to 3 to 5 years with a fluorescent lamp.
  • the catalyst containing an acrylic resin has poor light resistance, but has excellent film strength, and can wash the filter catalyst.
  • photocatalysts had only been effective for self-cleaning of organic and other contaminants and had no effect on inorganic contaminants such as dust.However, cleaning can remove inorganic contaminants and extend the life of the filter. Can be longer.
  • the degradation characteristics of acetate aldehyde, urea, ammonia, and Escherichia coli were measured for the photocatalyst with acryl resin and the photocatalyst without acryl resin, prepared in Example 27, using a fluorescent lamp, sunlight, a white lamp, and a mercury lamp. Compared. As a result, it was found that the decomposition characteristics of acetate, urea, ammonia, and Escherichia coli were as effective as those of the photocatalyst without acrylic resin, regardless of the lamp used. Thus, it was found that the acrylic resin-added catalyst can provide a sufficient effect not only with an ultraviolet lamp but also with a lamp used in a living environment.
  • silanol-modified acrylic resins in which silanol groups have been introduced into the side chains of acrylic resins have been developed for acryl resins in order to improve their chemical properties.
  • an acrylic resin having a different amount of silanol group introduced was added to prepare a filter.
  • Fig. 36 shows the evaluation results of the filter for decomposition of cigarette smoke and light resistance. The decomposition characteristics of tobacco smoke did not change significantly with the amount of silanol groups introduced (the amount of silanol introduced in the figure), indicating that the performance did not deteriorate. On the other hand, it was found that the light resistance can be improved by increasing the amount of introduced silanol groups.
  • an organic resin when used, unlike a ceramic material such as silica, it can be cured without applying heat.
  • a room temperature curing resin This can be achieved.
  • room-temperature curing systems take about 24 hours, except for instant adhesives.
  • Instant adhesives are hardened in a short time, and are gradually decomposed by photocatalysts.
  • UV-curable resins can be cured in a short time and have excellent light resistance.
  • the UV curing system cures with ultraviolet rays, and gradually polymerizes and cures with ultraviolet rays emitted from a fluorescent lamp.
  • a solution was prepared by adding a UV curable resin to Ti 0 ? Fine particles. This solution was used to form a T i 0 2 film on Atta Lil fibers, to produce a photocatalyst with filter. The procedure is shown below.
  • the solution prepared on the acrylic fiber was coated and irradiated with ultraviolet light for 15 seconds using a low-pressure mercury lamp at room temperature to form a filter coated with a photocatalyst.
  • the composition of the prepared photocatalyst is shown in Table 19.
  • Fig. 37 shows the results of examining the decomposition characteristics (decomposition rate after 5 hours) of tobacco smoke with respect to the addition of the coupling agent: 3 ⁇ 4. It can be seen that the addition of the coupling agent improves the photocatalytic properties. With the IJV cured resin alone, the resin completely covers the Ti 0 ? _ Particle surface and loses catalytic properties. The addition of couplings in g agent, it is possible to increase the exposed portion of the T i ⁇ 7 surface. In addition, the photocatalyst decomposes the surface adsorbed water to generate radicals. However, by adding a cupping agent, a large amount of the surface adsorbed water can be retained, and the catalyst performance can be exhibited.
  • Table 19 shows the test results other than the catalyst performance.
  • the water washing test enables water washing with 1 V curable resin at 10 wt% or more. No deterioration in light resistance was observed even after irradiation for 10 hours without any problem.
  • a photocatalyst can be formed on any material surface in a short time at low temperature, providing a highly active photocatalyst that is effective in the living environment, can be washed with water, can remove inorganic dirt, and can replace and clean various application products. Reduce the number.
  • the Ti 0 z fine particles / -dispersed Si i sol prepared on PET film was coated and treated at 120 ° C for 5 minutes while irradiating with a low-pressure mercury lamp (intensity: 15 mWZcm 2 ).
  • Te to form S i 0 2 film
  • T i 0 2 plastic film particles are the T i ⁇ 2 dispersion S i ⁇ 2 film dispersed co one and Bok in.
  • the thin film obtained on the PET film had good film quality and strength, and the thickness was 300 nm.
  • the prepared membrane was rubbed with an eraser with a load of 1 kg, and a strength test was performed.
  • a strength test was performed.
  • the film without B and P additions ⁇
  • the force that caused film peeling at 0 times 5 and the film with B and P additions did not stick even at 100 times. From this, it was found that the film strength was improved by adding B and P.
  • the decomposition activity of organic substances was evaluated.
  • the activity test showed that An organic dye was coated and irradiated with light of 0.2 mWZcm 2 at a wavelength of 254 nm.
  • the decomposition rate was determined from the amount of change from the initial dye transmittance. Table 20 shows the results. The hollow column in the table indicates that the element was not added.
  • a mechanism for generating an air flow by an electric motor such as an air purifier, a ventilation fan, a fan, a vacuum cleaner, a clothes dryer, a dish dryer, a dishwasher, and a garbage disposal machine, is mainly used for indoor use.
  • the low-temperature curing type highly active oxide photocatalytic thin film was provided on the air flow path, the filtration part, the exterior part, and the part illuminated by the built-in lighting mechanism of electrical products used in the environment. The following effects can be obtained.
  • electronegativity is less than one.
  • the addition of ions that are smaller than 0.2 nm and have a valence of 2 or less increased the effect of decomposing organic substances.
  • metal oxide semiconductors with an electric affinity of 1.2 or more, including antimony-doped tin oxide, and metals of Ag, Cu, i, Pd, Rh, and Pt The addition of the fine particles together further increased the decomposition efficiency.
  • the deodorizing effect of reducing the odor of the water is obtained.
  • various microorganisms such as bacteria, fungi, pollen, etc. drift in the air due to weak light, these microorganisms are killed by the action of decomposing organic substances.
  • the surface of the member on which the oxide catalyst thin film is formed is kept clean, the effect of reducing the amount of microorganisms floating in the indoor air using these products can be obtained.
  • these air-filtering parts such as filters and nets, are often treated as replacement parts. If dirt accumulates or becomes clogged, the parts can be removed and cleaned, or new parts can be removed.
  • the adhered dirt is decomposed, so that the life span up to the end can be extended and the frequency of replacement can be reduced.
  • air cleaners, ventilation fans, electric fans, and vacuum cleaners may be remotely operated by providing an infrared receiver on the main unit and an infrared transmitter on the remote controller. This also has the effect of preventing a problem that dirt adheres to the receiving / transmitting portion of the device and hinders transmission / reception of signals.
  • a metal oxide semiconductor having an electric affinity of 1.2 or more, including antimony-added tin oxide in a photocatalytic thin film, or Ag, Cu, Ni, P d, R h since the addition of fine metal particles I 3 t, the surface resistance of the film itself can be kept low.
  • This antistatic effect is effective not only in preventing dirt due to adhesion of dust and the like, but also in preventing malfunction of electronic circuits due to electrostatic charging. In particular, it is highly effective for articles that tend to be triboelectrically charged during use, such as sweepers.
  • Outer parts of the outer frame, frame, and case of air purifiers, ventilation fans, fans, vacuum cleaners, clothes dryers, dish dryers, dishwashers, and kitchen waste treatment machines are particularly effective because they tend to adhere to dust and dirt. is there.
  • the photocatalytic thin film when forming a photocatalytic thin film having the above effects, is prepared from a solution containing a low molecular weight organometallic compound and water, By irradiating electromagnetic waves of a required specific wavelength, including ultraviolet light, etc. to break the bond between the group atom and the organic group, the reaction for forming a film is promoted.Thus, a thin film is formed at a lower temperature than before. You can now. For this reason, the surface of general-purpose plastics, including ABS, PS, PP, polyester, etc. used for electrical products as described above, and organic paints applied to steel plates, is exposed to heat by the base material. It is now possible to form oxide photocatalyst thin films without causing defects such as softening, deformation, bubble generation, cracking, embrittlement, reduced strength, and reduced toughness.
  • the air flow path parts attached to the above-mentioned articles and the parts of the air flow path are made of materials that can withstand heat treatment at 300 ° C or more.
  • the present invention has made it possible to easily form the above oxide photocatalytic thin film.
  • the oxide photocatalyst thin film according to the present invention can form a hard film at a low temperature, and can be used as a substitute for a hard coat such as an acrylic resin which has been conventionally applied to the surface of a plastic molded product. There is also an effect.
  • the gloss of the molded article can be increased as in the case of the conventional hard coat, the surface can be prevented from being damaged, and an effect of suppressing the growth of microorganisms, an antifouling effect, and an antistatic effect can be obtained.
  • the oxide photocatalytic thin film formed on the fiber surface is vitreous, the surface has good adsorbability and wettability. This has the effect of improving odor collection and smoke particle collection efficiency.
  • the contact angle of water droplets adhering inside can be reduced by utilizing the antifouling effect of the photocatalyst. This can reduce the total amount of residual water, which has the effect of increasing the drying efficiency of dishes.
  • Various effects can be applied to applications where dew may not be useful if this effect is used.

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Abstract

Un film photocatalytique fin destiné à s'utiliser dans des passages d'écoulement d'air, des éléments de filtrations, des éléments extérieurs et des éléments exposés à la lumière provenant d'un mécanisme d'éclairage encastré dans des équipements électriques principalement employés dans une pièce. Divers additifs renforcent son activité catalytique. Ce film est capable de décomposer la matière organique par exposition à une lumière même faible, y compris la lumière généralement dégagée dans une pièce par un tube fluorescent, une ampoule à incandescence, une ampoule à vapeurs de mercure, ou par la lumière solaire traversant une vitre. Ce film est également capable de décomposer des taches produites par la nicotine des cigarettes ou le sébum, par exemple des mains, même si ces taches sont faites directement sur le film, ce qui fait de ce film un dispositif anti-salissure. En outre, en présence d'une lumière très faible, ce film est capable de décomposer diverses substances telles que les amines organiques et les mercaptans qui dégagent des odeurs fortes, même lorsque ces substances sont déposées directement sur le film. La décomposition produit des substances inodores ou ne dégageant pratiquement pas d'odeurs produisant par là-même un effet désodorant permettant de lutter contre les odeurs dans une pièce.
PCT/JP1997/003334 1996-09-20 1997-09-19 Film photocatalytique fin et articles pourvus de ce film WO1998012048A1 (fr)

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Cited By (14)

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Publication number Priority date Publication date Assignee Title
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JP2003047859A (ja) * 2001-08-08 2003-02-18 Sumitomo Metal Mining Co Ltd 可視光域でも触媒活性を有する光触媒
US6607702B1 (en) * 1999-05-27 2003-08-19 Lg Electronics Inc. Photocatalyst filter, method for fabricating the same and air cleaner thereof
JP2004206202A (ja) * 2002-12-24 2004-07-22 Kawashima Textile Manuf Ltd 汚染感知器
FR2850270A1 (fr) * 2003-01-27 2004-07-30 Oreal Utilisation d'un photocatalyseur pour le traitement des cheveux gras
EP1522342A4 (fr) * 2001-08-08 2005-04-13 Sumitomo Metal Mining Co Photocatalyseur presentant une activite catalytique, y compris dans une zone de lumiere visible
JP2006022876A (ja) * 2004-07-07 2006-01-26 Tsubaki Emerson Co 抗菌減速機
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US8377223B2 (en) 2005-12-08 2013-02-19 Bsh Bosch Und Siemens Hausgeraete Gmbh Method for eliminating odors in a dishwasher machine
CN102962017A (zh) * 2000-09-11 2013-03-13 Gr智力储备股份有限公司 光谱化学
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KR102648026B1 (ko) * 2023-06-30 2024-03-15 에스에스씨라이팅 주식회사 탈취용 환기장치
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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0549861A (ja) * 1991-08-21 1993-03-02 Mitsui Eng & Shipbuild Co Ltd シート状環境浄化装置
JPH07168001A (ja) * 1993-12-15 1995-07-04 Nikon Corp 黴の発生が抑制された光学機器
JPH07316342A (ja) * 1994-05-26 1995-12-05 Goyo Paper Working Co Ltd 光触媒含有合成樹脂組成物及び該組成物層を含む積層体
JPH08117596A (ja) * 1994-10-27 1996-05-14 Matsushita Seiko Co Ltd 二酸化チタン粒子の担持方法
JPH08131841A (ja) * 1994-11-10 1996-05-28 Toto Ltd 光触媒作用を有する部材
JPH08196903A (ja) * 1995-01-24 1996-08-06 Agency Of Ind Science & Technol 多孔質光触媒及びその製造方法
JPH08266902A (ja) * 1995-03-29 1996-10-15 Mitsubishi Paper Mills Ltd 光触媒を用いた環境浄化材料およびその組成物
JPH0959041A (ja) * 1995-06-14 1997-03-04 Toto Ltd 光触媒を含有する防曇性コーティング組成物
JPH0960443A (ja) * 1995-06-14 1997-03-04 Toto Ltd 窓サッシ
JPH09226041A (ja) * 1995-12-22 1997-09-02 Toto Ltd 結露水滴付着防止部材及び部材の結露水滴付着防止方法
JPH09262481A (ja) * 1996-03-29 1997-10-07 Tao:Kk 光触媒体及びその製造法

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0549861A (ja) * 1991-08-21 1993-03-02 Mitsui Eng & Shipbuild Co Ltd シート状環境浄化装置
JPH07168001A (ja) * 1993-12-15 1995-07-04 Nikon Corp 黴の発生が抑制された光学機器
JPH07316342A (ja) * 1994-05-26 1995-12-05 Goyo Paper Working Co Ltd 光触媒含有合成樹脂組成物及び該組成物層を含む積層体
JPH08117596A (ja) * 1994-10-27 1996-05-14 Matsushita Seiko Co Ltd 二酸化チタン粒子の担持方法
JPH08131841A (ja) * 1994-11-10 1996-05-28 Toto Ltd 光触媒作用を有する部材
JPH08196903A (ja) * 1995-01-24 1996-08-06 Agency Of Ind Science & Technol 多孔質光触媒及びその製造方法
JPH08266902A (ja) * 1995-03-29 1996-10-15 Mitsubishi Paper Mills Ltd 光触媒を用いた環境浄化材料およびその組成物
JPH0959041A (ja) * 1995-06-14 1997-03-04 Toto Ltd 光触媒を含有する防曇性コーティング組成物
JPH0960443A (ja) * 1995-06-14 1997-03-04 Toto Ltd 窓サッシ
JPH09226041A (ja) * 1995-12-22 1997-09-02 Toto Ltd 結露水滴付着防止部材及び部材の結露水滴付着防止方法
JPH09262481A (ja) * 1996-03-29 1997-10-07 Tao:Kk 光触媒体及びその製造法

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6607702B1 (en) * 1999-05-27 2003-08-19 Lg Electronics Inc. Photocatalyst filter, method for fabricating the same and air cleaner thereof
JP2001025437A (ja) * 1999-07-13 2001-01-30 Tiger Vacuum Bottle Co Ltd 保温容器
CN102962017A (zh) * 2000-09-11 2013-03-13 Gr智力储备股份有限公司 光谱化学
EP1522342A4 (fr) * 2001-08-08 2005-04-13 Sumitomo Metal Mining Co Photocatalyseur presentant une activite catalytique, y compris dans une zone de lumiere visible
JP2003047859A (ja) * 2001-08-08 2003-02-18 Sumitomo Metal Mining Co Ltd 可視光域でも触媒活性を有する光触媒
EP1468736A4 (fr) * 2001-08-08 2005-02-23 Sumitomo Metal Mining Co Photocatalyseur ayant une activite catalytique meme dans la region de la lumiere visible
WO2003013726A1 (fr) * 2001-08-08 2003-02-20 Sumitomo Metal Mining Co.,Ltd. Photocatalyseur ayant une activite catalytique meme dans la region de la lumiere visible
JP2004206202A (ja) * 2002-12-24 2004-07-22 Kawashima Textile Manuf Ltd 汚染感知器
FR2850270A1 (fr) * 2003-01-27 2004-07-30 Oreal Utilisation d'un photocatalyseur pour le traitement des cheveux gras
WO2004075680A3 (fr) * 2003-01-27 2004-10-21 Oreal Utilisation d'un photocatalyseur pour le traitement des cheveux gras
JP2006022876A (ja) * 2004-07-07 2006-01-26 Tsubaki Emerson Co 抗菌減速機
US8377223B2 (en) 2005-12-08 2013-02-19 Bsh Bosch Und Siemens Hausgeraete Gmbh Method for eliminating odors in a dishwasher machine
CN102015918A (zh) * 2008-06-24 2011-04-13 株式会社韩国能源 含有磷灰石涂敷的光催化剂的涂料组合物及具有该组合物的辐射加热体系
JP2015009208A (ja) * 2013-06-28 2015-01-19 独立行政法人産業技術総合研究所 可視光応答性組成物とこれを用いた光電極、光触媒、光センサー
KR101844368B1 (ko) 2015-03-17 2018-04-02 주식회사 엘엠에스 광학 필터 및 이를 포함하는 촬상 장치
WO2018008479A1 (fr) * 2016-07-05 2018-01-11 日本ペイント株式会社 Composition de revêtement
JP2022025308A (ja) * 2020-07-29 2022-02-10 平岡織染株式会社 帯電防止性抗菌防黴膜材

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