单分散、规则球形Au@SiO_2核-壳纳米粒的制备及光谱研究  

Preparation and Spectrum Study of Monodispersed Regular Spherical Au@SiO_2 Core-Shell Nanoparticles

作　　者：姚祖福[1,2] 黄可龙[1] 于金刚[1] 郭军[1] 李艳华[1] 方东[1] 

机构地区：[1]中南大学化学化工学院,长沙410083 [2]怀化医学高等专科学校药学系,怀化418000

出　　处：《无机化学学报》2009年第12期2163-2168,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家863重大专项(No.2007AA021810)资助

摘　　要：采用3-巯基丙基三甲氧基硅烷作为联结剂,成功将单个金纳米粒子包在氧化硅壳中,制得Au@SiO2核壳纳米粒子;该复合纳米粒子形貌呈球形、单分散性较好,金纳米粒子位于氧化硅球的中心,无团聚的金纳米粒子包覆在氧化硅壳中。采用透射电镜(TEM)对样品的形貌进行了表征,通过能量散射X-射线能谱(EDX)分析了目标物的化学成分,并对所得核壳纳米粒子的光谱性质进行了研究。Using 3-mercaptopropyltrimethoxysilane as linker, single gold nanopartiele was successfully encapsulated by silicon oxide shell, and Au@SiO2 core-shell nanoparticles were prepared. The nanocomposites were spherical and monodispersal. The gold nanoparticle located at the center of silica nano-sphere. No congregating gold nanoparticles were embedded in one silica sphere. The morphologies of the samples were characterized by transmission electron microscopy （TEM）. The chemical contents of the samples were analyzed using energy diffraction X-ray （EDX） spectroscopy. And their optical properties were studied.

关 键 词：金 氧化硅 核壳纳米粒子 光学性质 3-巯基丙基三甲氧基硅烷 

分 类 号：O614.12[理学—无机化学] O613.72[理学—化学]