Enhanced visible-light-driven photocatalytic H2-production activity of CdS-loaded TiO2 microspheres with exposed (001) facets

被引：17
作者：
Gao, Bifen [1 ]
Yuan, Xia [1 ]
Lu, Penghui [1 ]
Lin, Bizhou [1 ]
Chen, Yilin [1 ]
机构：
[1] Huaqiao Univ, Coll Mat Sci & Engn, Dept Appl Chem, Xiamen 361021, Peoples R China
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2015年 / 87卷
基金：
中国国家自然科学基金;
关键词：
oxides; chemical synthesis; crystal structure; microstructure; STATE Z-SCHEME; ANATASE TIO2; QUANTUM DOTS; HYDROGEN-PRODUCTION; SINGLE-CRYSTALS; NANOSHEETS; NANOCRYSTALS; WATER; HETEROJUNCTION; PERFORMANCE;
D O I：
10.1016/j.jpcs.2015.08.018
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
CdS-loaded TiO2 microspheres with highly exposed (001) facets were prepared by hydrothermal treatment of a TiF4-HCl-H2O mixed solution followed by a chemical bath deposition of CdS onto TiO2 microspheres. The crystal structure, surficial micro-structure and photo-absorption property of the samples were characterized by XRD, FE-SEM, TEM and UV-vis diffuse reflectance spectroscopy, etc. The as-prepared samples exhibited superior visible-light-driven photocatalytic H-2-production activity from lactic acid aqueous solution in comparison with CdS-sensitized TiO2 nanoparticles, whose surface was dominated by (101) facets. Photoelectrochemical measurement confirmed that (001) facet is beneficial for the transfer of photo-generated electron from CdS to TiO2 microsphere, which led to the unexpected high photocatalytic activity of CdS-loaded TiO2 microspheres. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：171 / 176
页数：6
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