Preparation, characterization, and photocatalytic performance of pear-shaped ZnO/Ag core-shell submicrospheres

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 固体润滑国家重点实验室

	Preparation, characterization, and photocatalytic performance of pear-shaped ZnO/Ag core-shell submicrospheres
	Guo, Xiao-Hua 1; Ma, Jian-Qi 1,2; Ge, Hong-Guang 1
刊名	Journal of Physics and Chemistry of Solids
	2013
卷号	74 期号:5 页码:784-788
关键词	ZnO submicrospheres Ag nanoparticles ZnO/Ag core-shell submicrospheres Optical properties Photocatalytic performance
ISSN号	0022-3697
通讯作者	Ma, Jian-Qi
英文摘要	Pear-shaped ZnO/Ag core-shell submicrospheres with good monodispersity were prepared via a seed-mediated particle growth procedure, where metal Ag (by reducing Ag⁺ with Sn²⁺) deposited on the as-prepared ZnO submicrospheres served as seeds (nucleation sites) for further growth of Ag nanoparticles. The as-prepared samples were characterized by X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray spectroscopy, ultraviolet-visible and photoluminescence spectra. Structure characterization demonstrates that the ZnO/Ag composites are composed of pear-shaped wurtzite ZnO submicrosphere core and Ag nanoparticles (nanoshell). Photoluminescence indicates that Ag nanoshell can effectively inhibit the recombination of the photoinduced electrons and holes of ZnO. This is responsible for the higher photocatalytic activity of the ZnO/Ag core-shell composites. The photocatalytic performance of the prepared ZnO/Ag samples for degradation of Rhodamine B was evaluated with a comparative study. The relationship between the structure of the samples and their photocatalytic performance shows that Ag deposits can significantly enhance the photocatalytic efficiency of ZnO submicrospheres.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the Natural Science Foundation of Shannxi Province of China (No. 2010JM2016);Foundation of Shannxi Educatopnal Committee (No. 2010JK469)
语种	英语
WOS记录号	WOS:000316429000023
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/18272]
专题	兰州化学物理研究所_固体润滑国家重点实验室
作者单位	1.Shaanxi Univ Technol, Sch Chem & Environm Sci, Hanzhong 723001, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Guo, Xiao-Hua,Ma, Jian-Qi,Ge, Hong-Guang. Preparation, characterization, and photocatalytic performance of pear-shaped ZnO/Ag core-shell submicrospheres[J]. Journal of Physics and Chemistry of Solids,2013,74(5):784-788.
APA	Guo, Xiao-Hua,Ma, Jian-Qi,&Ge, Hong-Guang.(2013).Preparation, characterization, and photocatalytic performance of pear-shaped ZnO/Ag core-shell submicrospheres.Journal of Physics and Chemistry of Solids,74(5),784-788.
MLA	Guo, Xiao-Hua,et al."Preparation, characterization, and photocatalytic performance of pear-shaped ZnO/Ag core-shell submicrospheres".Journal of Physics and Chemistry of Solids 74.5(2013):784-788.