Preparation and photocatalytic property of La (Fe)-doped bismuth titanate

被引：30

作者：

Yao, WF ^{[1
]}

Wang, H

Xu, XH

Yang, XN

Zhang, Y

Shang, SX

Wang, M

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China

[2] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Shandong, Peoples R China

[3] Shandong Univ, Sch Environm Sci & Engn, Jinan 250100, Shandong, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2003年 / 251卷 / 02期

关键词：

bismuth titanate; CSD; photodegradation;

D O I：

10.1016/S0926-860X(03)00378-8

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：

Bismuth titanate doped with Fe and La ions was prepared by the chemical solution decomposition (CSD) method. Under similar conditions, pure phases of (Fe0.2Bi0.8)(2)Ti2O7 and (La0.2Bi0.8)(4)Ti3O12 were formed, respectively. The different product is attributed to the different doping ionic radius of Fe3+ and La3+. The photocatalyst based on the prepared samples for photodecolorization of 10 mg/l methyl orange solution was examined. Results show doping of bismuth titanate with La3+ can significantly increase the photoactivity of bismuth titanate, while Fe3+ doping decreases it. The observed increased photocatalytic activity of La dopant bismuth titanate is attributed to the strong absorption of OH groups at the surface of the catalyst. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：235 / 239

页数：5

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