| 摘要 |
With respect to 100 parts by volume of an aqueous alcohol solution containing 0.01 to 50% by volume of an alcohol, 20 or less parts by volume of titanium tetrachloride is added thereto to obtain a coating agent wherein titanium oxide or a precursor thereof in the form of nanoparticles is dispersed in the aqueous alcohol solution. Consequently, the coating agent exhibiting a high photocatalytic activity can be produced by a simple operation at low cost. Since the coating agent obtained by the present invention has a high self-adhesiveness in addition to the high photocatalytic activity, it can adhere to an object substance by itself.
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