| 摘要 |
A rutile-titanium-dioxide microparticle dispersion liquid characterized in that rutile-titanium-dioxide microparticles are dispersed in an aqueous dispersion medium, a tin component is included, and the ratio (TiO2/SnO2) of the number of moles of the tin component, in tin-oxide equivalent, to the number of moles of titanium dioxide is between 40 and 10,000, inclusive. The present invention makes it possible to provide: a rutile-titanium-dioxide microparticle dispersion liquid wherein said titanium dioxide microparticles exhibit excellent dispersion stability; a manufacturing method therefor; and a member that has, on the surface thereof, a rutile-titanium-dioxide thin film formed using the aforementioned dispersion liquid. Also, by adding and reacting a copper compound or an iron compound after step (3), thereby including a copper component or an iron component in the titanium-dioxide microparticle dispersion liquid, a highly transparent photocatalytic thin film sensitive to visible light can be fabricated in a convenient manner. |
