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催化学报  2011 

锐钛矿、金红石和板钛矿降解罗丹明B光催化活性的比较研究

DOI: 10.1016/S1872-2067(10)60222-7, PP. 983-991

Keywords: 氧化钛,紫外拉曼,晶相,罗丹明B,光催化,降解

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Abstract:

?详细考察并比较了采用低温制备的锐钛矿、金红石和板钛矿氧化钛降解罗丹明B的光催化活性.与传统高温焙烧制备的金红石相比,低温制备的金红石粒径小,比表面积大,表面羟基数目多,因此光催化效率明显增加.更重要的是,当锐钛矿和金红石具有相似粒径和比表面积时,金红石具有较高的光降解罗丹明B活性.对于板钛矿氧化钛而言,虽然其表观光催化活性(单位时间内降解的罗丹明B)远低于锐钛矿或金红石的表观光催化活性,但是其本征光催化活性(单位比表面积、单位时间内降解的罗丹明B)却远远高于锐钛矿或金红石的本征光催化活性.

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