Shape, size and photocatalytic activity control of TiO2 nanoparticles with surfactants

被引：186

作者：

Liao, D. L. ^{[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 | 2007年 / 187卷 / 2-3期

基金：

加拿大自然科学与工程研究理事会;

关键词：

TiO2; nanoparticle; sol-gel; shape-controlled nanoparticle; size-controlled nanoparticle; surfactant; photocatalytic activity;

D O I：

10.1016/j.jphotochem.2006.11.003

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：

Shape-, size- and photocatalytic activity-controlled TiO2 nanoparticles were prepared front Ti(OBu)(4) and TiCl4 through the sol-gel method and studied for photocatalytic decomposition of methyl orange in fixed film batch reactors. The results showed that shape and size of TiO2, nanoparticles could be manipulated by the use of surfactants during preparation. Spherical, cubic, ellipse nanoparticles and nanorods of TiO2 were obtained with different surfactants. Shape- and size-controlled TiO2 nanoparticles showed a red shift in UV-vis light reflectance spectra, which would be beneficial for photocatalytic reactions, as compared to TiO2 nanoparticles obtained without the use of surfactants. TiO2 nanoparticles with different shapes and sizes showed different photocatalytic activities. Cubic nanoparticles prepared with the use of sodium dodecyl sulfate had a higher photocatalytic activity than other TiO2 nanoparticles. (c) 2006 Elsevier B.V All rights reserved.

引用

页码：363 / 369

页数：7

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