低对称性SiO_2/Ag核壳复合纳米结构的银镜反应制备及表面增强拉曼散射活性研究  

Surface-enhanced Raman Scattering Activities of Low-symmetry SiO_2/Ag Core-Shell Composite Nanostructures Using Silver Mirror Reaction

作　　者：徐进之[1,2] 满石清[1,2] 刘应亮[1,2] 

机构地区：[1]暨南大学电子工程系,广州510632 [2]暨南大学纳米化学研究所,广州510632

出　　处：《材料导报》2011年第12期112-115,共4页Materials Reports

基　　金：国家自然科学基金(60477015);广东省自然科学基金(9151063201000018);广东省自然科学基金团队资助项目(05200555)

摘　　要：利用银镜反应在自组装的SiO2纳米粒子单层膜上制备了低对称性的SiO2/Ag核壳复合纳米结构。通过透射电镜(TEM)、扫描电镜(SEM)和紫外-可见分光光度计(UV-Vis)对核壳复合纳米结构的表面形貌和光学性质进行了表征。以亚甲基蓝作为探针分子,研究了低对称性SiO2/Ag核壳复合纳米结构的表面增强拉曼散射(SERS)活性。Low-symmetry SiO2/Ag core-shell composite nanostructures have been prepared by simply carrying out the silver mirror reaction on the top of the self-assembled monolayer arrays of SiO2 nanoparticles. The surface morphologies and optical properties of the core-shell composite nanostructures were characterized by TEM, SEM and UV-Vis spectroscopy. The surface-enhanced Raman scattering（SERS） activities of the core-shell composite nanostructures were investigated with methylene blue as a probemolecule.

关 键 词：SIO2微球 银镜反应 低对称性银纳米粒子 表面等离子共振 

分 类 号：O69[理学—化学]