Preparation of anatase TiO2 supported on alumina by different metal organic chemical vapor deposition methods

被引：68

作者：

Zhang, XW ^{[1
]}

Zhou, MH ^{[1
]}

Lei, LC ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Environm Engn, Hangzhou 310027, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2005年 / 282卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

TiO2/Al2O3; preparation; MOCVD; photodegradation;

D O I：

10.1016/j.apcata.2004.12.022

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：

Two kinds of metal organic chemical vapor deposition (MOCVD) approaches have been employed for the preparation of the photocatalyst of titanium dioxide supported on alumina. One was simultaneous deposition and calcinations, i.e. a one-step process; the other was preliminary gas impregnation of the support followed by a decomposition step, i.e. a two-step process. The results of characterization indicated that the structure of the support was destroyed by a two-step process because of pore blocking. It was found that the one-step process resulted in a superior photocatalyst: this was attributed to higher external surface concentration and more perfect crystalline structure of TiO2. TiO2/Al2O3 catalysts showed good repeatability. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：285 / 293

页数：9

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