Ti OXIDE FILM EXHIBITING PHOTOCATALYTIC ACTIVITY UPON VISIBLE LIGHT IRRADIATION AND PROCESS FOR PRODUCING THE SAME

摘要

A visible light responsive Ti oxide film that exhibits hydrophilicity and anticlouding property, excelling in transparency and that has capability of gas decomposition by UV radiation; a process for producing the same; and a substratum with Ti oxide film. There is provided a Ti oxide film formed on a glass substrate, which upon voltage application to the Ti oxide film while exposing the Ti oxide film to xenon lamp light of 100 mW/cm<2> luminance from which ultraviolet radiation of less than 400 nm is cut off exhibits a current value of at least 1000 times the current value exhibited upon application of the same voltage to the Ti oxide film in a dark place.