安庆师范学院学报（自然科学版）Issue(1)：92-97,6.DOI:10.13757/j.cnki.cn34-1150/n.2016.01.024
Fe3 O4＠SiO2／Ag纳米复合物的制备及其对RhB的痕量检测
Study on Preparation of Fe3 O4@SiO2/Ag Nanocomposites and Trace Detection for RhB
摘要
Abstract
By using PVP as the dispersant and reducing agent, Fe3 O4@SiO2/Ag nanocomposites are synthesized via a simple and one-step method in the present of Fe3 O4 .The nanocomposites are acted well as a SERS-active substrates for RhB.The SiO2 shell between Fe3 O4 nanoparticles and Ag nanoparticles is used to avoid the agglomeration of Ag nanoparticles and stabilize metal phase.The unique Raman enhancement effect of Fe3 O4@SiO2/Ag substrates indicates that RhB can be detected at a concentra-tion as low as 1 ×10 -12 M.Furthermore, the super paramagnetic property of Fe3O4 facilitates the efficient recycling of products with the assistance of an external magnetic field .This synthetic method provides a revelation for the preparation of other nanocom-posites.关键词
纳米复合材料/拉曼增强/SERS基底/磁性/痕量检测Key words
nanocomposites/Raman enhancement/SERS substrate/magnetism/trace detection分类
通用工业技术引用本文复制引用
刘晨辉,朱玲,沈玉华,谢安建..Fe3 O4＠SiO2／Ag纳米复合物的制备及其对RhB的痕量检测[J].安庆师范学院学报（自然科学版）,2016,(1):92-97,6.基金项目
国家自然科学基金（21171001，21173001）。 （）
