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Photocatalyst having an x-ray diffraction pattern which is substanially free of characteristic reflections associated with crystalline TiO.sub.2
Photocatalyst having an x-ray diffraction pattern which is substanially free of characteristic reflections associated with crystalline TiO.sub.2
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机译:具有x射线衍射图的光催化剂,基本上没有与结晶TiO.sub.2相关的特征反射
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摘要
A photocatalyst compound comprising: (i) a photocatalyst selected from the group consisting of TiO.sub.2, WO.sub.3 and mixtures thereof, the photocatalyst being substantially free of sharp, narrow band X-ray reflections at angles corresponding those of crystalline TiO.sub.2, WO. sub.3 and mixtures thereof, and (ii) a porous, crystalline, adsorbent support material. A process for producing the photocatalyst compound is also disclosed. The process comprises: (i) hydrolysing a non-ionic titanium compound to produce a colloidal suspension having an average particle size of less than about 250 Å; (ii) contacting a porous, crystalline, adsorbent support material with the colloidal suspension to produce an impregnated support; and (iii) calcining the impregnated support to produce the photocatalyst compound. The photocatalyst compound is useful, in the treatment of a fluid containing an organic pollutant.
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