Synthesis and Characterization of ZnS∶Ag Nanocrystals Surface-capped with Thiourea

作     者：HUANG Feng-hua PENG Yi-ru LIN Cheng-fang 

作者机构：College of Chemistry and Chemical Engineering Fuzhou University Fuzhou 350002 P. R. China College of Chemistry and Material Science Fujian Normal University Fuzhou 350007 P. R. China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2006年第22卷第6期

页      面：675-678页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：Supported by the Science Foundation of Education Department of Fujian Province(JA03043) the Science Foundation ofDepartment of Science and Technology of Fujian Province(2005 K011) 

主　　题：ZnS: Ag Nanocrystals Surface-capped with thiourea Synthesis Characterization 

摘      要：Ag^＋ -doped ZnS nanocrystals surface-capped with thiourea （expressed as ZnS： Ag/thiourea） were synthesized through sol-gel method with thiourea as a surface modifier and characterized by X-ray diffraction（XRD）, transmission electron microscope（TEM）, X-ray fluorescence spectrum（XRF）, infrared spectrum （IR）, UV-Vis absorption spectrum（ UV-Vis）, and photoluminescence spectrum（PL）. The results show that Ag^＋ ions are doped in ZnS nanocrystals, and the sulfur atoms in thiourea molecules coordinate with metal ions on the surface of the nanocrystals. The spherical ZnS： Ag/thiourea nanocrystals with an average diameter of 5 nm have good fluorescent characteristics, and therefore have great potential for use in molecular assembly and novel luminescence materials.