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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2001,Vol.17>> Issue(01)>> 23-27     doi: 10.3866/PKU.WHXB20010105         中文摘要
Preparation and Photocatalytic Properties of Nanometer SnO2@TiO2
Yan Xiu-Ru;Li Xiao-Hong;Huo Ming-Liang;Guo Wei-Wei;Gong Yong-Jin
Department of Chemistry,School of Science,Tianjin University,Tianjin 300072
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SnO2@TiO2 coated particles have been prepared with Ti(OC4H9)4 and SnO2•nH2O as precursors by coated on active surface.In order to improve the photocatalytic degradation activity of SnO2@TiO2 for DDVP,the conditions of preparation were studied and better photocatalytic activity was obtained.Its morphology and structure were characterized by XRD,SEM,TEM,XPS、IR and BET.The result indicated:That SnO2@TiO2 is composed of nanometer ranatase TiO2 and rutile SnO2,and the photocatalytic activities of SnO2@TiO2 are better than those of SnO2 and TiO2,the apparent rate constant k of the photocatalytic degradation of DDVP is related to the initial concentration of DDVP solution.The reaction is not a simple zeroorder reaction.

Keywords: Sol-precipitation method   Nanometer   SnO2@TiO2   Photocatalytic degradation   DDVP  
Received: 2000-03-31 Accepted: 2000-06-26 Publication Date (Web): 2001-01-15
Corresponding Authors: Yan Xiu-Ru Email: guoweiwei@eyou.com.cn


Cite this article: Yan Xiu-Ru;Li Xiao-Hong;Huo Ming-Liang;Guo Wei-Wei;Gong Yong-Jin. Preparation and Photocatalytic Properties of Nanometer SnO2@TiO2[J]. Acta Phys. -Chim. Sin., 2001,17 (01): 23-27.    doi: 10.3866/PKU.WHXB20010105
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