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

[1] Highly efficient liquid-phase photooxidation of an azo dye methyl orange over novel nanostructured porous titanate-based fiber of self-supported radially aligned H2Ti8O17•1.5H2O nanorods
Bao, NZ
Feng, X
Yang, ZH
Shen, LM
Lu, XH
[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2004, 38 (09) : 2729 - 2736
[2] HETEROGENEOUS PHOTOCATALYSIS
FOX, MA
DULAY, MT
[J]. CHEMICAL REVIEWS, 1993, 93 (01) : 341 - 357
[3] Electron spin resonance spin-trapping detection of radical intermediates in N-doped TiO2-assisted photodegradation of 4-chlorophenol
Fu, HB
Zhang, LW
Zhang, SC
Zhu, YF
Zhao, JC
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (07) : 3061 - 3065
[4] Visible-light-induced degradation of rhodamine B by nanosized Bi2WO6
Fu, HB
Pan, CS
Yao, WQ
Zhu, YF
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (47) : 22432 - 22439
[5] Photoinduced transformation of γ-HCH in the presence of dissolved organic matter and enhanced photoreactive activity of humate-coated α-Fe2O3
Fu, HB
Quan, X
Liu, ZY
Chen, S
[J]. LANGMUIR, 2004, 20 (12) : 4867 - 4873
[6] Synthesis, characterization and photocatalytic properties of nanosized Bi2WO6, PbWO4 and ZnWO4 catalysts
Fu, Hongbo
Pan, Chengsi
Zhang, Liwu
Zhu, Yongfa
[J]. MATERIALS RESEARCH BULLETIN, 2007, 42 (04) : 696 - 706
[7] Photocatalytic properties of nanosized Bi2WO6 catalysts synthesized via a hydrothermal process
Fu, Hongbo
Zhang, Liwu
Yao, Wenqing
Zhu, Yongfa
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 66 (1-2) : 100 - 110
[8] Photocatalytic activities of a novel ZnWO4 catalyst prepared by a hydrothermal process
Fu, Hongbo
Lin, Jie
Zhang, Liwu
Zhu, Yongfa
[J]. APPLIED CATALYSIS A-GENERAL, 2006, 306 : 58 - 67
[9] ENVIRONMENTAL APPLICATIONS OF SEMICONDUCTOR PHOTOCATALYSIS
HOFFMANN, MR
MARTIN, ST
CHOI, WY
BAHNEMANN, DW
[J]. CHEMICAL REVIEWS, 1995, 95 (01) : 69 - 96
[10] Kinetics and products of the TiO2 photocatalytic degradation of 2-chlorobiphenyl in water
Hong, CS
Wang, YB
Bush, B
[J]. CHEMOSPHERE, 1998, 36 (07) : 1653 - 1667

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