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Citation: Yan Xiu-Ru, Li Xiao-Hong, Huo Ming-Liang, Guo Wei-Wei, ng Yong-Jin. Preparation and Photocatalytic Properties of Nanometer SnO₂@TiO₂[J]. Acta Physico-Chimica Sinica, ;2001, 17(01): 23-27. doi: 10.3866/PKU.WHXB20010105 shu

Preparation and Photocatalytic Properties of Nanometer SnO₂@TiO₂

1.
Department of Chemistry,School of Science,Tianjin University,Tianjin　300072

Received Date: 31 March 2000
Available Online: 15 January 2001

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.
- Sol-precipitation method;Nanometer;SnO₂@TiO₂;Photocatalytic degradation;DDVP
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沈阳化工大学材料科学与工程学院沈阳 110142

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Preparation and Photocatalytic Properties of Nanometer SnO2@TiO2

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Preparation and Photocatalytic Properties of Nanometer SnO₂@TiO₂