Preparation of nanosized TiO2/ZnO composite catalyst and its photocatalytic activity for degradation of methyl orange

被引：277

作者：

Liao, D. L. ^{[1
]}

Badour, C. A. ^{[1
]}

Liao, B. Q. ^{[1
]}

机构：

[1] Lakehead Univ, Dept Chem Engn, Thunder Bay, ON P7B 5E1, Canada

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2008年 / 194卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

TiO2/ZnO composite nanoparticles; shape control; photocatalytic activity;

D O I：

10.1016/j.jphotochem.2007.07.008

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：

The shape and size of TiO2/ZnO composite nanoparticles can be manipulated by introducing surfactants and different Zn/Ti(OBu)(4) molar ratios during the synthesis process. Different sizes of spherical TiO2/ZnO composite nanoparticles are obtained when sodium dodecyl benzene sulfonate (DBS) and different Zn/Ti(OBu)(4) molar ratios are used. Cubic TiO2/ZnO composite nanoparticles, hexagonal nanorods, and nanobelts are obtained when sodium dodecyl sulfonate (SDS) and different Zn/Ti(OBu)(4) molar ratios are used. The XRD study shows that there is no obvious difference in crystal composition of various shapes of TiO2/ZnO composite nanoparticles. The photocatalytic degradation of methyl orange shows significant variation in rate that decreases in the order: TiO2/ZnO composites >TiO2 (with surfactant but no Zn) >TiO2 (without surfactant and Zn). An optimal Zn/Ti(OBU)4 molar ratio of 0.25:1 is found to achieve the highest photocatalytic activity of TiO2/ZnO composite nanoparticles. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：11 / 19

页数：9

共 40 条

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