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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
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.
