文献类型：期刊文献

英文题名：One-step synthesis of water-soluble AgInS₂ and ZnS-AgInS₂ composite nanocrystals and their photocatalytic activities

作者：Luo, Zhishan[1];Zhang, Hua[1];Huang, Jing[1];Zhong, Xinhua[1]

机构：[1]E China Univ Sci & Technol, Dept Chem, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2012

卷号：377

起止页码：27

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000304432400005)】；

基金：We thank the National Natural Science Foundation of China (Nos. 20771037, and 20871047), the Fundamental Research Funds for the Central Universities, and the Program for Professor of Special Appointment at Shanghai Institutions of Higher Learning for financial support.

语种：英文

外文关键词：Aqueous synthesis; Ternary structured nanocrystals; Photoluminescence; Photocatalyst

摘要：Water-soluble AgInS2 (AIS) nanociystals (NCs) have been synthesized for the first time in the presence of GSH as capping ligand in aqueous media at low temperature of 95 degrees C. The investigations on the effects of various experimental variables including pH value, GSH/In, In/Ag, and In/S ratios on the optical properties showed that the long time, pH of 8.5 and large GSH/In ratio could increase the intensity of the shorter wavelength (position not changed) emission, while the ratios of In/Ag and In/S could affect the emission wavelength and intensity as well as the intensity ratio of longer to shorter wavelength emission with the shorter wavelength emission tunable from 560 to 660 nm. After modifying with ZnS, the obtained ZnS-AgInS2 (ZAIS) NCs show both slightly blue-shifted stronger PL emission and higher quantum yield increasing to 5 fold. The obtained AIS and ZAIS NCs showed promising photocatalytic activities in the degradation of rhodamine B. (C) 2012 Elsevier Inc. All rights reserved.