The enhanced photoactivity of nanosized Bi2WO6 catalyst for the degradation of 4-chlorophenol

被引：28

作者：

Fu, Hongbo ^{[1
,2
]}

Yao, Wenqing ^{[2
]}

Zhang, Liwu ^{[2
]}

Zhu, Yongfa ^{[2
]}

机构：

[1] Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China

[2] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2008年 / 43卷 / 10期

基金：

美国国家科学基金会; 中国博士后科学基金;

关键词：

nanostructures; semiconductors; surface properties;

D O I：

10.1016/j.materresbull.2007.10.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanosized Bi2WO6 catalyst exhibited the enhanced photoactivity for the degradation of 4-chlorophenol (4-CP) under visible irradiation compared to the sample prepared by high-temperature solid reaction. The photoactivity of the catalyst was sensitive to pH variation of the suspension. Nanosized Bi2WO6 catalyst showed the highest activity at pH 7.2. The photodegradation of 4-CP by nanosized Bi2WO6 catalyst followed a pseudo-first-order reaction. After three recycling runs for the photodegraclation of 4-CP, the activity of the catalyst did not show any significant loss, suggesting that the catalyst was stable under visible irradiation. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2617 / 2625

页数：9

共 20 条

[11] TiO2-assisted photocatalytic degradation of azo dyes in aqueous solution: kinetic and mechanistic investigations - A review
Konstantinou, IK
Albanis, TA
[J]. APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY, 2004, 49 (01): : 1 - 14
[12] H2 or O2 evolution from aqueous solutions on layered oxide photocatalysts consisting of Bi3+ with 6s2 configuration and d0 transition metal ions
Kudo, A
Hijii, S
[J]. CHEMISTRY LETTERS, 1999, (10) : 1103 - 1104
[13] Oxidative power of nitrogen-doped TiO2 photocatalysts under visible illumination
Mrowetz, M
Balcerski, W
Colussi, AJ
Hoffmann, MR
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (45) : 17269 - 17273
[14] Hydrothermal synthesis and characterization of Bi2MoO6 and Bi2WO6
Shi, YH
Feng, SH
Cao, CS
[J]. MATERIALS LETTERS, 2000, 44 (3-4) : 215 - 218
[15] Photocatalytic decomposition of organic contaminants by Bi2WO6 under visible light irradiation
Tang, JW
Zou, ZG
Ye, JH
[J]. CATALYSIS LETTERS, 2004, 92 (1-2) : 53 - 56
[16] Selective preparation of monoclinic and tetragonal BiVO4 with scheelite structure and their photocatalytic properties
Tokunaga, S
Kato, H
Kudo, A
[J]. CHEMISTRY OF MATERIALS, 2001, 13 (12) : 4624 - 4628
[17] Photocatalytic property of perovskite bismuth titanate
Yao, WF
Xu, XH
Wang, H
Zhou, JT
Yang, XN
Zhang, Y
Shang, SX
Huang, BB
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 52 (02) : 109 - 116
[18] Photocatalytic property of bismuth titanate Bi2Ti2O7
Yao, WF
Wang, H
Xu, XH
Zhou, JT
Yang, XN
Zhang, Y
Shang, SX
[J]. APPLIED CATALYSIS A-GENERAL, 2004, 259 (01) : 29 - 33
[19] YASUO E, 2002, CHEM MATER, V14, P4309
[20] Direct splitting of water under visible light irradiation with an oxide semiconductor photocatalyst
Zou, ZG
Ye, JH
Sayama, K
Arakawa, H
[J]. NATURE, 2001, 414 (6864) : 625 - 627

← 1 2 →