| 摘要 |
<p>A method for producing titanium oxide which comprises reacting a peroxotitanate ion, which may be derived from a reaction product of an aqueous titanium salt solution and hydrogen peroxide, in the presence of an alkali. The reaction can be utilized for forming a titanium oxide film onto an article to have a film formed thereon. For example, an aqueous solution of a peroxotitanate ion (for example, Ti(SO4)2aq + H2O2) is attached to an article to have a film having an alkali on the surface thereof (for example, a cement product) by spraying, application, or immersion, to thereby form a titanium oxide film. The alkali may be originated from an aqueous alkali solution caused to be present on the surface by spraying, application or immersion. The surface preferably comprises a porous material. The method allows the formation of a titanium oxide film having highly dispersed titanium oxide particles, which results in the reduction of the amount of titanium oxide to be used, and also allows the formation of a titanium oxide film using a simple and easy process, which results in the reduction of the production cost required for forming a titanium oxide film.</p> |
