期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 475, 期 -, 页码 112-118出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2016.04.048
关键词
ZnO; Polar facets; Gold; Plasmon; Photocatalysis; Visible light
资金
- National Science Fund of China [51202105]
- Natural Science Foundation of Jiangxi Province [20151BAB216006, 20122BAB203009]
- Science and Technology Project of Education Department of Jiangxi Province, China [GJJ14109]
- Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure [SKL201205SIC]
- Institute of Metal Research, Chinese Academy of Sciences
Hexagonal prism-like ZnO crystals dominated with polar facets were synthesized using a hydrothermal method. The Gold (Au) nanoparticles were selectively photodeposited on the polar surfaces of faceted ZnO crystals as a result of anisotropic photocatalytic activities of the polar and nonpolar facets. The size of Au nanoparticles uniformly dispersed on the polar facets increased with increasing Au-loading amount. These Au-loaded ZnO crystals showed an additional visible light absorption band from 400 nm to 800 nm. The 0.1 wt% Au-loaded ZnO crystals with visible light absorption peak at approximately 690 nm exhibited the highest photocatalytic activity under visible light irradiation. (C) 2016 Elsevier Inc. All rights reserved.
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