文献类型：期刊文献

英文题名：Thermostability of photoluminescence of US nanoparticles loaded on silica spheres

作者：Kang, Shi-Zhao[1];Cui, Zeyi[1];Xu, Zhizhen[1];Mu, Jin[1]

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

年份：2008

卷号：315

期号：1-3

起止页码：44

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000252840100007)】；

语种：英文

外文关键词：CdS nanoparticles; silica spheres; photoluminescence; thermostability

摘要：CdS nanoparticles were loaded on the 3-mercaptopropyltrimethoxysilane (NIPS) modified surface of silica spheres in an in situ growth process. High-resolution electron microscope (HRTEM) images and EDAX analysis show that the CdS nanoparticles are independently dispersed on the surface of silica spheres. Fluorescence spectra of the samples were used to investigate the photoluminescence thermostability of CdS nanoparticles. Compared with the CdS nanoparticles powder, the CdS nanoparticles loaded on the silica spheres exhibit relatively higher photoluminescence thermostability. This high thermostability is probably due to the immobilization of the CdS nanoparticles on the silica spheres reducing the aggregation of nanoparticles initiated by increasing temperature. However, the chemical stability of the loaded CdS nanoparticles is less than that of the CdS nanoparticles powder. (C) 2007 Elsevier B.V. All rights reserved.