Au_(core)Co_(shell)纳米粒子的制备、表征及其表面增强拉曼光谱研究  

Preparation and Characterization of Au_(core)Co_(shell) Nanoparticles and Their Surface-enhanced Raman Spectroscopy

作　　者：鲍芳[1] 崔颜[2] 姚建林[1] 任斌[2] 顾仁敖[1] 

机构地区：[1]苏州大学化学系,苏州215123 [2]厦门大学固体表面物理化学国家重点实验室,化学系,厦门361005

出　　处：《高等学校化学学报》2007年第4期627-629,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20373046;20573076);高等学校博士学科点专项科研基金(批准号:20050285019);江苏省自然科学基金(批准号:BK2005032);厦门大学固体表面物理化学国家重点实验室开放课题资助.

摘　　要：AucoreCoshell nanoparticles with different shell thicknesses were prepared by using chemical reduction method and characterized by scanning electron microscopy（SEM） and cyclic voltammetry（CV）. The results reveal that the prepared core-shell nanoparticles were covered by Co shell and exhibited the similar electrochemistry property with the Co nanoparticles surface. Surface enhanced Raman spectroscopy（SERS） activities of these nanoparticles were studied by using pyridine as a probe molecule. It was found that the SERS intensity depended on the Co shell thickness of the core-shell nanoparticles and was weakened with the increasing shell thickness. The SERS intensity of these AucoreCoshell nanoparticles is found to be about twenty times higher than that obtained on an electrochemically roughened cobalt electrode.AucoreCoshell nanoparticles with different shell thicknesses were prepared by using chemical reduction method and characterized by scanning electron microscopy(SEM) and cyclic voltammetry(CV). The results reveal that the prepared core-shell nanoparticles were covered by Co shell and exhibited the similar electrochemistry property with the Co nanoparticles surface. Surface enhanced Raman spectroscopy(SERS) activities of these nanoparticles were studied by using pyridine as a probe molecule. It was found that the SERS intensity depended on the Co shell thickness of the core-shell nanoparticles and was weakened with the increasing shell thickness. The SERS intensity of these Au_(core)Co_(shell) nanoparticles is found to be about twenty times higher than that obtained on an electrochemically roughened cobalt electrode.

关 键 词：AU CORE CO shell纳米粒子 表面增强拉曼光谱 循环伏安 

分 类 号：O614[理学—无机化学] O657.37[理学—化学]