Hydrothermal Synthesis and Photocatalytic Properties of Bi2WO6

被引：5

作者：

Liu Ying ^{[1
]}

Wang Wei-Min ^{[1
]}

Fu Zheng-Yi ^{[1
]}

Wang Hao ^{[1
]}

Wang Yu-Cheng ^{[1
]}

Zhang Jin-Yong ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

JOURNAL OF INORGANIC MATERIALS | 2011年 / 26卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Bi2WO6; powders; hydrothermal synthesis; photocatalytic properties; rhodamine B (RhB); VISIBLE-LIGHT IRRADIATION; RHODAMINE-B; DEGRADATION; TIO2; DYES;

D O I：

10.3724/SP.J.1077.2011.01169

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Series of bismuth tungstate (Bi2WO6) catalysts were synthesized through simple hydrothermal route and characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and UV-Vis diffuse reflectance spectroscope (DRS). The effects of synthesis conditions on the morphologies and properties of products were studied. UV-Vis diffuse reflectance spectra indicated that the samples had absorption in both UV and visible light areas. Their photocatalytic activities were determined by photodegradation of Rhodamine B (RhB) under UV and visible light irradiation (gimel > 420 nm). The results indicated that sample reacted at 180 degrees C for 24h (pH = 2) had the best photocatalytic activities, with reaction rate constant k of 0.03688/min. The stability of photocatalysts was estimated, no obvious loss of photocatalytic property was detected after four cyclic tests. After 150min visible light irradiation, the degradation rate of dye to the Bi2WO6 reacted at 180 degrees C for 24h (pH = 2) reached 38%.

引用

页码：1169 / 1174

页数：6

共 16 条

[1] Role of synthesis method and particle size of nanostructured TiO2 on its photoactivity [J].

Almquist, CB ;

Biswas, P .

JOURNAL OF CATALYSIS, 2002, 212 (02) :145-156

[2] Removal of synthetic dyes from wastewaters:: a review [J].

Forgacs, E ;

Cserháti, T ;

Oros, G .

ENVIRONMENT INTERNATIONAL, 2004, 30 (07) :953-971

[3] Visible-light-induced degradation of rhodamine B by nanosized Bi2WO6 [J].

Fu, HB ;

Pan, CS ;

Yao, WQ ;

Zhu, YF .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (47) :22432-22439

[4] Titanium dioxide sol-gel deposited over glass and its application as a photocatalyst for water decontamination [J].

Gelover, S ;

Mondragón, P ;

Jiménez, A .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2004, 165 (1-3) :241-246

[5] H2 or O2 evolution from aqueous solutions on layered oxide photocatalysts consisting of Bi3+ with 6s2 configuration and d0 transition metal ions [J].

Kudo, A ;

Hijii, S .

CHEMISTRY LETTERS, 1999, (10) :1103-1104

[6] Self-Assembled Three-Dimensional Hierarchical Umbilicate Bi2WO6 Microspheres from Nanoplates: Controlled Synthesis, Photocatalytic Activities, and Wettability [J].

Ma, Dekun ;

Huang, Shaoming ;

Chen, Wenxiu ;

Hu, Shengwei ;

Shi, Fangfang ;

Fan, Kellei .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (11) :4369-4374

[7] TiO2-assisted photodegradation of dyes:: A study of two competitive primary processes in the degradation of RB in an aqueous TiO2 colloidal solution [J].

Qu, P ;

Zhao, JC ;

Shen, T ;

Hidaka, H .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1998, 129 (2-3) :257-268

[8] Hydrothermal synthesis and characterization of Bi2MoO6 and Bi2WO6 [J].

Shi, YH ;

Feng, SH ;

Cao, CS .

MATERIALS LETTERS, 2000, 44 (3-4) :215-218

[9] Photocatalytic and photochemical degradation of mono-, di- and tri-azo dyes in aqueous solution under UV irradiation [J].

Silva, Claudia Gomes ;

Wang, Wendong ;

Faria, Joaquim Luis .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2006, 181 (2-3) :314-324

[10] Photocatalytic decomposition of organic contaminants by Bi2WO6 under visible light irradiation [J].

Tang, JW ;

Zou, ZG ;

Ye, JH .

CATALYSIS LETTERS, 2004, 92 (1-2) :53-56

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