Self-assembled three-dimensional hierarchical Bi2WO6 microspheres by sol-gel-hydrothermal route

被引：34
作者：
Liu, Yumin [1 ]
Tang, Haibo [1 ]
Lv, Hua [1 ]
Li, Zijin [1 ]
Ding, Zhiwei [1 ]
Li, Shuang [1 ]
机构：
[1] Henan Normal Univ, Sch Chem & Chem Engn, Xinxiang 453007, Henan, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Porosity; Bi2WO6; Photocatalytic; Sol-gel hydrothennal; PHOTOCATALYTIC DECOMPOSITION; ORGANIC CONTAMINANTS; FABRICATION; TIO2; NANOCRYSTALS; PERFORMANCE;
D O I：
10.1016/j.ceramint.2013.11.075
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：
Self-assembled three-dimensional (3D) hierarchical Bi2WO6 microspheres built from 2D nanoplates alignment were successfully prepared by the sol gel hydrothermal route. Based on X-ray diffraction and scanning electron microscopy observation of the products at different reaction time periods, the formation mechanism of 3D hierarchical Bi2WO6 microspheres was proposed. UV vis diffuse reflectance spectra indicated that the obtained 3D hierarchical Bi2WO6 microspheres had enhanced absorption in both UV and visible light regions. The photocatalytic activities of the as-prepared products were evaluated by monitoring the degradation of methylene blue solution under visible light irradiation. Due to the structural feature and good optical quality, Bi2WO6 prepared by the sol gel hydrothermal route possessed the highest photocatalytic activity than those of Bi2WO6 samples prepared by hydrothermal and sol gel routes. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：6203 / 6209
页数：7
相关论文
共 31 条
[21]   Synthesis of Bi2WO6 nanoplate-built hierarchical nest-like structures with visible-light-induced photocatalytic activity [J].
Wu, Ju ;
Duan, Fang ;
Zheng, Yan ;
Xie, Yi .
JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (34) :12866-12871
[22]   Solvothermal preparation of Bi2WO6 nanocrystals with improved visible light photocatalytic activity [J].
Xu, Chunxiao ;
Wei, Xiao ;
Ren, Zhaohui ;
Wang, Ying ;
Xu, Gang ;
Shen, Ge ;
Han, Gaorong .
MATERIALS LETTERS, 2009, 63 (26) :2194-2197
[23]   Surfactant-free synthesis of Bi2WO6 multilayered disks with visible-light-induced photocatalytic activity [J].
Xu, Chunxiao ;
Wei, Xiao ;
Guo, Yanmin ;
Wu, Hanqi ;
Ren, Zhaohui ;
Xu, Gang ;
Shen, Ge ;
Han, Gaorong .
MATERIALS RESEARCH BULLETIN, 2009, 44 (08) :1635-1641
[24]   EDTA-mediated shape-selective synthesis of Bi2WO6 hierarchical self-assemblies with high visible-light-driven photocatalytic activities [J].
Xu, Lin ;
Yang, Xiaoyan ;
Zhai, Zheng ;
Hou, Wenhua .
CRYSTENGCOMM, 2011, 13 (24) :7267-7275
[25]   Simple synthesis and characterization of mesoporous (N, S)-codoped TiO2 with enhanced visible-light photocatalytic activity [J].
Yao, Nian ;
Wu, Congcong ;
Jia, Lichao ;
Han, Song ;
Chi, Bo ;
Pu, Jian ;
Jian, Li .
CERAMICS INTERNATIONAL, 2012, 38 (02) :1671-1675
[26]   La doping effects on intergrowth Bi2WO6-Bi3TiNbO9 ferroelectrics [J].
Yi, Z. G. ;
Li, Y. X. ;
Yang, Q. B. ;
Yin, Q. R. .
CERAMICS INTERNATIONAL, 2008, 34 (04) :735-739
[27]   Fabrication of hollow inorganic microspheres by chemically induced self-transformation [J].
Yu, Jiaguo ;
Guo, Hongtao ;
Davis, Sean A. ;
Mann, Stephen .
ADVANCED FUNCTIONAL MATERIALS, 2006, 16 (15) :2035-2041
[28]   Synthesis of square Bi2WO6 nanoplates as high-activity visible-light-driven photocatalysts [J].
Zhang, C ;
Zhu, YF .
CHEMISTRY OF MATERIALS, 2005, 17 (13) :3537-3545
[29]   Synthesis of nanometer Bi2WO6 synthesized by sol-gel method and its visible-light photocatalytic activity for degradation of 4BS [J].
Zhang, Gaoke ;
Lue, Fan ;
Li, Ming ;
Yang, Junling ;
Zhang, Xiaoyang ;
Huang, Baibiao .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2010, 71 (04) :579-582
[30]   Fabrication of flower-like Bi2WO6 superstructures as high performance visible-light driven photocatalysts [J].
Zhang, Lisha ;
Wang, Wenzhong ;
Chen, Zhigang ;
Zhou, Lin ;
Xu, Haolan ;
Zhu, Wei .
JOURNAL OF MATERIALS CHEMISTRY, 2007, 17 (24) :2526-2532
1234