Preparation and photocatalytic properties of a nanometer ZnO-SnO2 coupled oxide

被引：223

作者：

Zhang, ML ^{[1
]}

An, TC ^{[1
]}

Hu, XH ^{[1
]}

Wang, C ^{[1
]}

Sheng, GY ^{[1
]}

Fu, JM ^{[1
]}

机构：

[1] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangdong Key Lab Environm Resources Utilizat & P, Guangzhou 510640, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2004年 / 260卷 / 02期

关键词：

coupled oxides; nanometer photocatalyst; co-precipitation method; photocatalytic degradation; organic pollutants;

D O I：

10.1016/j.apcata.2003.10.025

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：

A nanometer coupled oxide ZnO-SnO2 was prepared using the co-precipitation method employing NH3-H2O as the precipitant. The oxide was characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and UV diffuse reflectance spectrum (DRS). The photocatalytic activity of nanometer coupled oxides was studied using methyl orange as a mode organic pollutant. The relationship between the photocatalytic activity and the microstructure of nanometer coupled oxides was also discussed in the paper. Experimental results showed that the nanometer coupled oxides mainly consist of nanometer ZnO and SnO2, and they have the same excellent photocatalytic activity as Degussa P25 TiO2 for the degradation of methyl orange (MO). Moreover, the photocatalytic activity of the coupled oxides increases gently at first, then decreases rapidly with the increase of the calcination temperature. But a small amount of nanometer Zn2SnO4 was formed in the mixture of coupled oxides when the calcination temperature was higher than 700degreesC. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：215 / 222

页数：8

共 41 条

[21] CONTAMINANT DEGRADATION IN WATER [J].