| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photocatalyst coating liquid which can give a coating film which shows little reduction of photocatalytic activity by a sulfur component. <P>SOLUTION: This coating liquid comprises a photocatalyst and an aluminum compound. For example, the photocatalyst includes an anatase-type titanium oxide, and the aluminum compound includes a boehmite-type aluminum hydroxide. The content (in terms of oxide) of the aluminum compound is generally about 0.05-2 times by mass based on the photocatalyst. The coating film formed by applying a photocatalyst coating liquid according to the present invention to the surface of a substrate and evaporating a solvent shows photocatalytic activity over a long period of time without the degradation by an outdoor and indoor sulfur component. <P>COPYRIGHT: (C)2007,JPO&INPIT |
