A novel photocatalyst and improvement of photocatalytic properties by Cu doping

被引：17

作者：

Sun, Jingxue ^{[1
]}

Chen, Gang ^{[1
]}

Li, Yingxuan ^{[1
]}

Zhou, Chao ^{[1
]}

Zhang, Hongjie ^{[1
]}

机构：

[1] Harbin Inst Technol, Dept Chem, Harbin 150001, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 04期

关键词：

Semiconductors; X-ray diffraction; Scanning electron microscopy;

D O I：

10.1016/j.jallcom.2010.09.138

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：

A new series of photocatalysts Bi2Zn2/3-xCuxTa4/3O7(Cu-beta-BZT) crystals with pyrochlore structure were synthesized by the method of solid-state reaction (SSR) With small amount of Cu doped (0 01 <= x <= 0 04) the phase structure was kept to be monoclinic pyrochlore as pure beta-BZT The diffuse reflectance spectrum of Cu-beta-BZT samples showed a red shift The method of Cu doping enhanced the photocatalytic activity and when the value of x is 0 03 the sample showed the highest activity which is about 10 times higher than that of pure beta-BZT under UV light Especially the samples of Cu-beta-BZT showed photocatalytic activities under visible light irradiation (lambda > 400 nm) Effects of the Cu doped on the photocatalytic activities of the catalysts were also discussed (C) 2010 Elsevier B V All rights reserved

引用

页码：1133 / 1137

页数：5

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