Facile synthesis of hierarchically structured BiVO4 oriented along (010) facets with different morphologies and their photocatalytic properties

被引：35
作者：
Zhao, Guosheng [1 ,2 ]
Liu, Wei [1 ,3 ]
Li, Jinying [4 ]
Lv, Qiuyan [2 ]
Li, Wenxin [2 ]
Liang, Liting [3 ]
机构：
[1] Jilin Normal Univ, Minist Educ, Key Lab Preparat & Applicat Environm Friendly Mat, Changchun 130103, Peoples R China
[2] Jilin Normal Univ, Coll Chem, Siping 136000, Peoples R China
[3] Jilin Normal Univ, Coll Environm Sci & Engn, Siping 136000, Peoples R China
[4] Jilin Normal Univ, Coll Phys, Siping 136000, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2016年 / 390卷
关键词：
BiVO4; Solvothermal synthesis; Crystal growth; Microstructure; Photocatalytic activity; ASSISTED HYDROTHERMAL SYNTHESIS; SHAPE-CONTROLLED SYNTHESIS; SOLVOTHERMAL SYNTHESIS; NANOSTRUCTURED BIVO4; PERFORMANCE; PH; NANOCOMPOSITES; MICROSPHERES; DEGRADATION; TEMPERATURE;
D O I：
10.1016/j.apsusc.2016.08.126
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Hierarchically structured BiVO4 oriented along (010) facets with different morphologies are synthesized by a template-free solvothermal process in glycerol (Gly)-water mixed solvent. The effects of the volume fraction of Gly aqueous solution on the crystal structure, growth degree of (010) facets, morphology and photocatalytic activity were investigated. It is found that the volume fraction of Gly aqueous solution has strong influence on the concentration of the reaction species in the self-assembly process, and consequently induces the different morphology, as well as the crystal growth of the as-prepared BiVO4 oriented along (010) facets. A possible formation mechanism is proposed on the basis of the characterization results of X-ray diffraction and scanning electron microscopy. The four-leaved primrose-like BiVO4 sample exhibits the best photocatalytic activity for the photodegradation of methylene blue (MB) solution under simulated sunlight irradiation. The enhanced photocatalytic activity can be attributed to the improved separation of photogenerated electrons and holes caused by both special morphology and preferential growth of (010) facets. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：531 / 539
页数：9
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