Self-assembled BiVO4/Bi2WO6 microspheres: synthesis, photoinduced charge transfer properties and photocatalytic activities

被引：31
作者：
Fan, Haimei [1 ,2 ]
Wang, Dejun [2 ]
Liu, Zhipeng [2 ]
Xie, Tengfeng [2 ]
Lin, Yanhong [2 ]
机构：
[1] Ningde Normal Univ, Fujian Prov Univ, Key Lab Green Energy & Environm Catalysis, Dept Chem, Ningde 352100, Peoples R China
[2] Jilin Univ, Coll Chem, State Key Lab Theoret & Computat Chem, Changchun 130012, Peoples R China
来源：
DALTON TRANSACTIONS | 2015年 / 44卷 / 26期
基金：
中国国家自然科学基金;
关键词：
VISIBLE-LIGHT; BIVO4; HETEROJUNCTION; DEGRADATION; WATER;
D O I：
10.1039/c5dt01222h
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Three-dimensional (3D) BiVO4/Bi2WO6 composite microspheres with enhanced visible-light (lambda > 420 nm) photodegradation activity of methylene blue (MB) were synthesized by a simple, one-pot, template-free solvothermal method. A mixture of ethylene glycol (EG) and H2O (volume ratio of EG-H2O was 1 : 1) was used as the solvent. To investigate the relationship between structure and photocatalytic performance, the as-synthesized samples were characterized by XRD, FESEM, HRTEM, UV-vis DRS, SPS and TPV. Structural characterizations indicated that the composite nanostructure mainly consisted of two single-crystal phases, which were BiVO4 and Bi2WO6. In addition, a possible growth mechanism of this microsphere composite and the separation process of photoinduced charge carriers in the heterojunction are discussed.
引用
收藏
页码：11725 / 11731
页数：7
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