Preparation and photocatalytic properties of nanometer SnO2@TiO2

被引：5

作者：

Yan, XR ^{[1
]}

Li, XH ^{[1
]}

Huo, ML ^{[1
]}

Guo, WW ^{[1
]}

Gong, YJ ^{[1
]}

机构：

[1] Tianjin Univ, Sch Sci, Dept Chem, Tianjin 300072, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2001年 / 17卷 / 01期

关键词：

sol-precipitation method; nanometer; SnO2@TiO2; photocatalytic degradation; DDVP;

D O I：

10.3866/PKU.WHXB20010105

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

SnO2 @ TiO2 coated particles have been prepared with Ti(OC4H9)(4) and SnO2 . nH(2)O 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.

引用

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页码：23 / 27

页数：5

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