Photocatalyst coating liquid and inorganic material having photocatalyst function



PROBLEM TO BE SOLVED: To provide a photocatalyst coating liquid, capable of producing an inorganic material which has excellent photocatalyst function when used under an environment where it contacts with water.SOLUTION: The photocatalyst coating liquid contains photocatalytic titanium oxide particles, alkali silicate, copper, and alkanol amine and/or quaternary ammonium. The content of the copper is 0.03<CuO/TiO<0.3, relative to the photocatalytic titanium oxide particles, in terms of CuO-based mass ratio, and when silver is included as an optional component, its content is AgO/TiO<0.001 in terms of AgO-based mass ratio. The inorganic material having photocatalystic function is obtained by applying the coating liquid to a substrate followed by baking.
【課題】 水が接触する環境下で使用する際に、優れた光触媒機能を有する無機材料を製造可能な光触媒コーティング液の提供。 【解決手段】 光触媒性酸化チタン粒子と、アルカリシリケートと、銅と、アルカノールアミン及び/又は第四級アンモニウムを含有する光触媒コーティング液であって、前記銅の含有量が、前記光触媒性酸化チタン粒子に対して、CuO換算質量比で0.03<CuO/TiO 2 <0.3であり、任意成分として銀を含む場合には、その含有量は、Ag 2 O換算質量比でAg 2 O/TiO 2 <0.001であることを特徴とするものを、基材に適用後焼成して光触媒機能を有する無機材料を得る。 【選択図】なし




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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    JP-2016041429-AMarch 31, 2016信越化学工業株式会社, Shin Etsu Chem Co LtdMethod for producing visible light-responsive photocatalyst fine particle dispersion liquid