| abstract |
Titanium oxide-tungsten oxide composite photocatalyst microparticle dispersion, characterized in that i) titanium oxide microparticles containing peroxotitanium component and copper component, and ii) tungsten oxide microparticles are dispersed in an aqueous dispersion medium. As a result, according to the present invention, a photocatalytic thin film that exhibits photocatalytic activity only with visible light (400 to 800 nm), exhibits high antibacterial performance, and is difficult to stably denature the coordination state of copper against heat or UV exposure, and has high durability. It is possible to provide a titanium oxide-tungsten oxide composite photocatalyst fine particle dispersion containing copper-containing titanium oxide fine particles that can be easily produced. |