文献类型：期刊文献

英文题名：Morphology and properties of ultrafine SnO₂-TiO₂ coupled semiconductor particles

作者：Shi, LY; Li, CZ; Gu, HC; Fang, DY

机构：[1]Shanghai Univ, Coll Chem & Chem Engn, Dept Environm Sci & Engn, Shanghai 200072, Peoples R China;[2]E China Univ Sci & Technol, Inst Tech Chem & Phys, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Dept Chem Engn, Shanghai 200237, Peoples R China

年份：2000

卷号：62

期号：1

起止页码：62

外文期刊名：MATERIALS CHEMISTRY AND PHYSICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000084492100009)】；

语种：英文

外文关键词：photocatalytic oxidation; ultrafine particle; dyeing wastewater

摘要：In this paper, a new method to synthesize ultrafine SnO2-TiO2 coupled particles is presented. The coupled particles are synthesized by homogeneous precipitation and characterized by EDS, XRD, TEM, HREM and BET surface area analysis. The coupled particles, pure ultrafine TiO2, commercial TiO2,and pure SnO2 are employed for photocatalytic degradation of azo dye active red X-3B in aerated solution. The results show that a very rapid and complete decolorization of the azo dye can be achieved, and the photoactivity of the coupled particles is higher than that of pure ultrafine TiO2 and commercial TiO2 particles, and the optimum loading of SnO2 on TiO2 is 18.4%. The enhanced degradation rate of X-3B using SnO2-TiO2 coupled photocatalysts is attributed to increased charge separation in these systems. (C) 2000 Elsevier Science S.A. All rights reserved.