Preparation and characterization of ZnSe/CdSe core-shell microspheres  

ZnSe/CdSe核壳微球的制备与表征（英文）

作　　者：段雨露[1] 周丽旗 徐国富[1,2] 张慧颖[1] 李旭[1] 刘小鹤[1] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083 [2]中南大学有色金属材料科学与工程教育部重点实验室,长沙410083

出　　处：《Transactions of Nonferrous Metals Society of China》2015年第5期1559-1567,共9页中国有色金属学报（英文版）

基　　金：Project(13JJ1005)supported by the Natural Science Foundation for Distinguished Young Scholars of Hunan Province,China

摘　　要：The preparation of Zn Se/Cd Se core-shell structure nanocomposites by using the re-prepared Zn Se microspheres as the template under the hydrothermal condition was presented. The influence of different mole ratios of ZnS e to Cd（NO3）2 on the morphology and structure of the final product was investigated. And the performances of ZnS e/Cd Se core-shell structure nanocomposites were characterized by the means of X-ray diffraction（XRD） analyses, scanning electron microscopy（SEM）, transmission electron microscopy（TEM） and photoluminescence（PL） spectroscopy. The results indicate that the core-shell structure product can be prepared, when the mole ratio of Zn Se to Cd（NO3）2 is larger than 1：1; and the product will be ball solid structure, when the mole ratio of Zn Se to Cd（NO3）2 is equal to 1：1. The photo luminescence results show that Zn Se/Cd Se core-shell structures have high photo luminescence emission properties, and the product with mole ratio of Zn Se to Cd（NO3）2 being 1：0.5 has the best luminescence properties.在水热条件下,以水热法合成的Zn Se微米球为牺牲模板,成功制备出球形ZnSe/CdSe核壳结构纳米复合材料。讨论反应物ZnSe和Cd(NO3)2的不同摩尔比对最终产物形貌和结构的影响,并借助XRD,SEM,TEM和PL对Zn Se/Cd Se核壳结构纳米复合材料的性能进行表征。结果表明:当n(ZnSe):n(Cd(NO3)2大于1:1时可以制备出核壳结构,n(ZnSe):n(Cd(NO3)2)等于1时为实心球结构。PL光谱表明:Zn Se/Cd Se核壳结构纳米复合材料具有高的PL发射强度,且当n(ZnSe):n(Cd(NO3)2为1:0.5时发光性能最好。

关 键 词：hydrothermal methed core-shell nanocomposite ZNSE CDSE optical property 

分 类 号：TB33[一般工业技术—材料科学与工程]