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] Shanghai Key Laboratory of Functional Materials Chemistry, Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China

年份：2012

卷号：377

期号：1

起止页码：27

外文期刊名：Journal of Colloid and Interface Science

收录：EI(收录号：20122015021745)

语种：英文

外文关键词：Photocatalysis - Indium compounds - Silver compounds - II-VI semiconductors - Nanocrystals - Zinc sulfide - Chelation - Optical properties

摘要：Water-soluble AgInS2 (AIS) nanocrystals (NCs) have been synthesized for the first time in the presence of GSH as capping ligand in aqueous media at low temperature of 95°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 660nm. 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. ? 2012 Elsevier Inc.