文献类型：期刊文献

英文题名：Facile Synthesis of ZnS-CuInS₂-Alloyed Nanocrystals for a Color-Tunable Fluorchrome and Photocatalyst

作者：Zhang, Wenjin[1];Zhong, Xinhua[1]

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

年份：2011

卷号：50

期号：9

起止页码：4065

外文期刊名：INORGANIC CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000289710700026)】；

基金：We thank the National Natural Science Foundation of China (No. 20771037), SRFDP (20070251014), 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 for financial supports.

语种：英文

摘要：High-quality ZnS-CuInS2 (ZCIS) alloy nanocrystals have been synthesized via reaction between the acetate salts of the corresponding metals and elemental sulfur in the presence of dodecanethiol in octadecene media at 230 degrees C. The PL emission wavelength can be tuned conveniently via variation of the stoichiometric ratio of their components. The influence of various experimental variables,. including Zn/CuIn ratio, amount of sulfur and dodecanthiol and reaction temperature, on the optical properties andcomposition of the obtained ZCIS NCs have been systematicallyinvestigated. The plan ZCIS NCs did show PL emission but with quite low PL quantum yield (typically below 3%). In order to improve the PL emission efficiency, the ZnS shell was subsequently overcoated around the ZCIS core NCs. With ZnS shell growth, the PL emission wavelength of the resulting ZCIS/ZnS NCs can cover from 518 to 810 nm with the maximum PL quantum efficiency up to 56%. Furthermore, the obtained ZCIS/ZnS NCs show promising photocatalytic activity in the degradation of rhodamine B.