Nano photocatalysis air purifying fittings

The utility model decompose relates to a nanometer photocatalysis air purifying fitting, which is composed of a casing, an upper adsorption layer, a lower adsorption layer, a carrier which is provided with transparent porous nanometer photocatalyst films and is composed of a foam layer provided with three-dimensional net-shaped structure, ultraviolet sterilizing lamps which are arranged in parallel, light reflecting material of an inner wall of the casing, a power supply plug, etc., wherein, the specific surface area of the carrier is large, the porosity is high, and the pore diameter is small to enable the polluted air to pass through in disorder flows and to sufficiently contact with nanometer photocatalyst films arranged on all surfaces. The contact efficiency is high, and the combination is strong. The arrangement of the adsorption layers has the function of dust removal, can adsorb harmful gases, and enables the harmful gases to be decomposed through the irradiation of the ultraviolet light rays which penetrate the structure layer of the carrier; thus, the utility model has the advantages of high efficiency of purification, decomposition and sterilization, and long service life of the carrier.