形貌可控γ-硫化锰纳米晶的制备及表征  

Preparation and Characterization of Shape-Controlled γ-MnS Nanocrystals

作　　者：祁元春[1] 赵彦保[1] 许红涛[1] 

机构地区：[1]河南大学化学化工学院,河南开封475001

出　　处：《化学研究》2006年第4期60-62,共3页Chemical Research

基　　金：河南省杰出青年基金资助项目(0612002900)

摘　　要：在表面修饰剂聚乙烯吡咯烷酮(PVP)存在的条件下,使氯化锰和硫化钠发生反应,在76℃无水乙醇溶液中,制备出了亚稳态的-γMnS纳米晶.当反应的搅拌速度不同时,得到的产物分别呈球形和椭球形.采用X射线衍射(XRD)、透射电镜(TEM)、紫外吸收光谱分析(UV)、X射线光电子能谱(XPS)等手段对产物的形貌、结构和光学性质进行了表征,并据此推导了不同形貌纳米微粒的生长机理.Metastable wurtzite （γ-） manganese sulfide （MnS） crystallites were synthesized in absolute ethanol by the reaction between manganous chloride （MnCl2） and sodium sulfide （Na2S） in the presence of surface modification agent of PVP at 76℃. The stirring rate is an important reaction factor in controlling the morphology of T-MnS, such as sphere and ellipsoid. The as-prepared T-MnS nanocrystals were characterized by X-ray powder diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy and UV-vis spectra. In addition, possible growth mechanism was proposed.

关 键 词：γ-硫化锰 纳米晶 聚乙烯吡咯烷酮 形貌可控 

分 类 号：TB383[一般工业技术—材料科学与工程]