文献类型：期刊文献

英文题名：MPS-modified silica nanoparticles linked with Cd2+ ions

作者：Mu, Jin[1]; Xu, Leihua[1]; Wei, Qinglian[1]

机构：[1] Department of Chemistry, East China University of Science and Technology, 130 Meilong Rd., Shanghai 200237, China

年份：2006

卷号：27

期号：2

起止页码：143

外文期刊名：Journal of Dispersion Science and Technology

收录：EI(收录号：2006059670827)

语种：英文

外文关键词：Adsorption - Agents - Atomic force microscopy - Cadmium - Chemical bonds - Chemical modification - Films - Nanostructured materials - Positive ions - Ultraviolet spectroscopy

摘要：Silica nanoparticles were linked by using 3-mercaptopropyltrimethoxysilane (MPS) as a coupling agent and Cd2+ as bridging ions. The TEM micrographs showed approximately linear linkage between the silica nanoparticles rather than dense packing. The UV-visible absorption spectra confirmed the formation of S-Cd-S bonds between the silica nanoparticles. The alternative films of MPS-modified SiO2 nanoparticles and Cd2+ ions were also prepared using the layer-by-layer self-assembly technique and characterized by AFM. Copyright ? Taylor & Francis, Inc.