JP2003305371A5 - - Google Patents

Claims (14)

  A photocatalytic thin film in which particles having photocatalytic action are dispersed in a coating film, wherein the coating film is an element having an electronegativity of less than 1.6 and an ionic radius of less than 0.2 nm, A photocatalytic thin film characterized by containing a metal element having a valence of 2 or less. 2. The photocatalytic thin film according to claim 1 , further comprising at least one of P, B, K, and Ca in the coating film. 2. The photocatalytic thin film according to claim 1 , wherein oxide semiconductor particles made of a metal element having an electron affinity of 1.2 or more are further dispersed in the coating film. 4. The photocatalytic thin film according to claim 3 , wherein the layer in which the oxide semiconductor particles are dispersed is provided separately from the layer in which the particles having photocatalytic activity are dispersed. An article comprising the photocatalytic thin film according to any one of claims 1 to 4 on a substrate surface. Dust, oil particles, smoke, pollen and various microorganisms floating in the air by taking in the indoor air from the air intake and passing through the filter provided in the ventilation path by the air flow generated by driving the electric blower In an air purifier that collects and cleans odorous substances, etc., and then exhausts it from the exhaust port, among the components, the surface of the parts that are exposed to indoor illumination light or sunlight from outside the room is claimed. An air cleaner, wherein the photocatalytic thin film according to 1 is formed. By connecting the suction port and the dust collection chamber, and reducing the atmospheric pressure in the dust collection chamber with an electric blower, the dust and dust collected from the suction port are collected in the dust collection chamber, and the dust and dust are collected. In the vacuum cleaner which exhausts air from the exhaust port after filtering the filter, the photocatalytic thin film according to claim 1 is formed on a surface of a part which comes into contact with indoor illumination light or sunlight from outside. Vacuum cleaner to do. Air that has been taken in from the outside by an electric blower is sent to the drying drum that contains the clothing containing moisture, after being heated using a heater for heating, and the clothing is heated to evaporate the moisture. In clothes dryers that discharge from the exhaust port or condense moisture with a heat exchanger, remove the moisture and then exhaust from the exhaust port, charge the surface of the parts that come into contact with indoor lighting light or sunlight from the outside. Item 2. A clothes dryer, wherein the photocatalytic thin film according to item 1 is formed. In the washing tank containing dirty dishes, water is pressurized by a washing pump while heating, and after washing the dishes by spraying from the rotatable arm nozzle provided in the washing tank, a rinsing operation is performed. After this, the outside air is sucked in by the electric blower, and the air inside the high humidity after the rinsing operation is replaced by cool air or warm air by a heater to replace the moisture remaining in the dishes and the washing tank. A dishwasher for evaporating and drying, wherein the photocatalytic thin film according to claim 1 is formed on a surface of a part that is exposed to indoor illumination light or sunlight from outside. Into a treatment tank in which a culture substrate containing microorganisms is installed, garbage is put in, and stirred together with the culture substrate using a stirrer, and the garbage is decomposed by the metabolic action of microorganisms. In the soot processing machine which discharges | emits the water | moisture content generated at the time of decomposition | disassembly with air using an electric blower, the photocatalyst thin film of Claim 1 is formed in the surface of the component which touches indoor illumination light or sunlight from the outdoors A cocoon processing machine characterized by that. The article according to any one of claims 6 to 10 , wherein a transparent member is used for at least a part of the casing covering the surface of the photocatalytic thin film so that external light is irradiated onto the surface of the photocatalytic thin film. 12. The transparent member according to claim 11 , wherein the L value according to the color difference display method of transmitted light having a thickness of 2 mm is 50 or more, the a value is −20 or more and 20 or less, and the b value is 20 or less. A featured article. 12. The transparent member according to claim 11 , wherein the L value according to the color difference display method of transmitted light having a thickness of 2 mm is 50 or more, the a value is −20 or more and 20 or less, and the b value is 20 or less. A featured article.   A photocatalyst comprising adding a pigment that absorbs visible light to a photocatalyst made of titanium oxide.