多种形貌纳米银的电化学制备及其表面增强拉曼光谱研究  

Electrochemical preparation and SERS study of silver nanostructures with multiple morphologies

作　　者：李德伟[1] 蔡微[1] 商广义[1] 朱传凤[2] 姚骏恩[1] 

机构地区：[1]北京航空航天大学应用物理系,微纳测控与低维物理教育部重点实验室,北京100191 [2]中国科学院化学研究所,北京100190

出　　处：《电子显微学报》2011年第1期33-38,共6页Journal of Chinese Electron Microscopy Society

基　　金：科技部973课题(No.2007CB936503);国家自然科学基金科学仪器基础研究专项(No.10827403)

摘　　要：采用电化学沉积的方法制备出球状、棒状、树枝状、立方体状、带孔洞的多面体状的纳米银。扫描电镜的显微观察结果显示,沉积电压不仅影响纳米银的尺寸大小而且对形貌也有重要影响。通过对球状和树枝状纳米银进行的表面增强拉曼光谱(surface-enhanced raman scattering,SERS)的应用研究表明,用电化学沉积法制备的纳米银有很好的SERS特性,作为SERS基底可探测出浓度为10-16 mol/L的罗丹明6G。Ag nanostructures with spherical,rod,dendritic shape,cubic and poledron-shaped with holes on each surface have been prepared by electrochemical deposition method.The SEM results show that both the size of Ag nano particles and the Ag morphology are determined by the deposition voltage under the certain conditions.By using Ag spherical and dendritic nanostructures as substrates,SERS spectra of Rhodamine 6G with very low concentration of ～ 10-16 mol /L has been obtained.The electrochemical deposition method can provide an alternative way for the preparation of noble metal nano-particles and the substrate for SERS study.

关 键 词：电化学沉积 纳米银 沉积电压 扫描电镜(SEM) 表面增强拉曼散射(SERS) 

分 类 号：TB383.1[一般工业技术—材料科学与工程]