Enhanced photocatalytic activity of highly porous ZnO thin films prepared by sol-gel process

被引：238

作者：

Pal, B ^{[1
]}

Sharon, M ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, Bombay 400076, Maharashtra, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2002年 / 76卷 / 01期

关键词：

photocatalysis; ZnO thin film; porous surface; aromatic hydrocarbons degradation;

D O I：

10.1016/S0254-0584(01)00514-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Highly photoactive porous ZnO thin films on glass substrate have been prepared by a sol-gel process using Zn-acetate after sintering at 400 degreesC temperature. The films consist of spongy particle aggregates with uniform pores at the surface. Structural features and surface morphology were studied by XRD and SEM analyses. These films have been found to decompose aqueous solutions of phenol, chlorophenol, naphthalene and anthracene to CO- quite efficiently. Concentrations decreased linearly with illumination time, and high rate constants were obtained for the degradation of these organics. The pH values of the solution changed with the irradiation time due to the formation of hydroxylated intermediate photoproducts which have been detected in many cases. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：82 / 87

页数：6

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