Sol-gel synthesis and enhanced photocatalytic activity of doped bismuth tungsten oxide composite

被引：21

作者：

Xu, Xuetang ^{[1
,2
]}

Ge, Yuanxing ^{[1
,2
]}

Wang, Hong ^{[2
]}

Li, Bin ^{[1
,2
]}

Yu, Liuhui ^{[2
]}

Liang, Yanyan ^{[2
]}

Chen, Kun ^{[2
]}

Wang, Fan ^{[2
]}

机构：

[1] Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc In, Nanning 530004, Peoples R China

[2] Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2016年 / 73卷

基金：

中国国家自然科学基金;

关键词：

Composites; Interfaces; Oxides; Sol gel chemistry; Catalytic properties; VISIBLE-LIGHT; CRYSTAL-STRUCTURE; BI2WO6; HETEROJUNCTION; DEGRADATION; NANOCRYSTALS; PERFORMANCE; 0.7-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.8; PHOTODEGRADATION; SEMICONDUCTOR;

D O I：

10.1016/j.materresbull.2015.09.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pristine Bi2WO6 and Bi2WO6/Bi14W2O27 photocatalysts were synthesized by sol-gel method using Co(II) cation as dopant. The influence of Co dopant to the formation of Bi2WO6/Bi14W2O27 heterostructure composite was discussed. The photocatalytic activities of as-prepared samples were evaluated sufficiently by using rhodamine B as target organic pollutants under visible light. The as-prepared Bi2WO6/Bi14W2O27 heterostructure achieved enhanced optical absorption in the visible-light region, and exhibited much higher photocatalytic activities than that of pristine Bi2WO6. The optimum Bi/Co molar ratio and calcining temperature were also explored. The enhanced activities were attributed to the formation of heterostructure in suppressing the recombination of photo-generated carriers. The Co dopant species would participate to reduce the charge carrier recombination by acting as trapping sites for photogenerated charges. A possible photocatalytic mechanism over Bi2WO6/Bi14W2O27 heterostructure was proposed. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：385 / 393

页数：9

共 50 条

[21] Bismuth-titanium oxide nanopowders prepared by sol-gel method for photocatalytic applications [J].

Solis-Casados, D. A. ;

Escobar-Alarcon, L. ;

Arrieta-Castaneda, A. ;

Haro-Poniatowski, E. .

MATERIALS CHEMISTRY AND PHYSICS, 2016, 172 :11-19

[22] An aqueous sol-gel synthesis of chromium(III) doped mesoporous titanium dioxide for visible light photocatalysis [J].

Jaimy, Kanakkanmavudi B. ;

Ghosh, Swapankumar ;

Sankar, Sasidharan ;

Warrier, K. G. K. .

MATERIALS RESEARCH BULLETIN, 2011, 46 (06) :914-921

[23] Enhanced photocatalytic activity of Mg-doped ZnO thin films prepared by sol-gel method [J].

Islam, Muhammad R. ;

Azam, Muhammad G. .

SURFACE ENGINEERING, 2021, 37 (06) :775-783

[24] Synthesis, Photoluminescence and Photocatalytic Activity of Tetragonal SnO2 Prepared by Hydrothermal Sol-Gel Method [J].

Zhang, Zhenya ;

Chen, Yue ;

Wen, Xiaodong .

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, 2019, 93 (02) :384-392

[25] Photocatalytic properties of Mn-doped NiO spherical nanoparticles synthesized from sol-gel method [J].

Sankar, S. ;

Sharma, Sanjeev K. ;

An, Namhyun ;

Lee, Hwauk ;

Kim, Deuk Young ;

Im, Young Bin ;

Cho, Yung Duk ;

Ganesh, R. Sankar ;

Ponnusamy, S. ;

Raji, P. ;

Purohit, L. P. .

OPTIK, 2016, 127 (22) :10727-10734

[26] PREPARATIONS OF NICKEL DOPED ANATASE TITANIUM DIOXIDE WITH HIGH PHOTOCATALYTIC ACTIVITY BY SOL-GEL METHOD [J].

Ruan, Xinchao ;

Wang, Wenjing ;

Ai, Rui ;

Jin, Xiao ;

Zeng, Qingfu .

FRESENIUS ENVIRONMENTAL BULLETIN, 2012, 21 (12A) :3804-3812

[27] Visible Light Photocatalytic Properties of Bismuth Ferrite Prepared By Sol-Gel Method [J].

Park, Byung-Geon ;

Chung, Kyong-Hwan .

KOREAN CHEMICAL ENGINEERING RESEARCH, 2020, 58 (03) :486-492

[28] Efficient synthesis of perovskite-type oxide photocathode by nonhydrolytic sol-gel method with an enhanced photoelectrochemical activity [J].

Tabari, Taymaz ;

Ebadi, Mehdi ;

Singh, Dheerendra ;

Caglar, Basar ;

Yagci, M. Baris .

JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 750 :248-257

[29] Sol-gel preparation and visible light photocatalytic activity of nitrogen doped titania [J].

Shi, Jianwen ;

Chen, Shaohua ;

Wang, Shumei ;

Ye, Zhilong .

2011 CHINESE MATERIALS CONFERENCE, 2012, 27 :564-569

[30] Sol-gel assisted hydrothermal synthesis of ZnO microstructures: Morphology control and photocatalytic activity [J].

Zhao, Xiaohua ;

Li, Meng ;

Lou, Xiangdong .

ADVANCED POWDER TECHNOLOGY, 2014, 25 (01) :372-378

← 1 2 3 4 5 →