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

页码：11725 / 11731

页数：7

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