| AucoreCoshell纳米粒子的制备、表征及其表面增强拉曼光谱研究 |
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| 引用本文： | 鲍芳,崔颜,姚建林,任斌,顾仁敖. AucoreCoshell纳米粒子的制备、表征及其表面增强拉曼光谱研究[J]. 高等学校化学学报, 2007, 28(4): 627-629 |
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| 作者姓名： | 鲍芳 崔颜 姚建林 任斌 顾仁敖 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金 , 高等学校博士学科点专项科研项目 , 江苏省自然科学基金 , 国家重点实验室基金 |
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| 摘 要： | 在乙醇体系中和在制备好的Au纳米粒子表面, 用水合肼还原钴盐制备Co壳, 首次通过化学还原法制得核壳结构的Au-Co纳米粒子, 并通过控制钴盐的投料, 得到不同包裹层厚度的AucoreCoshell纳米粒子. 用扫描电子显微镜(SEM)和电化学循环伏安法(CV)等测试方法对其进行表征, 并用吡啶(Py)作为探针分子研究了其SERS效应.
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| 关 键 词： | AucoreCoshell纳米粒子 表面增强拉曼光谱 循环伏安 |
| 文章编号： | 0251-0790（2007）04-0627-03 |
| 收稿时间： | 2006-10-21 |
| 修稿时间： | 2006-10-21 |
Preparation and Characterization of AucoreCoshell Nanoparticles and Their Surface-enhanced Raman Spectroscopy |
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| BAO Fang,CUI Yan,YAO Jian-Lin,REN Bin,GU Ren-Ao. Preparation and Characterization of AucoreCoshell Nanoparticles and Their Surface-enhanced Raman Spectroscopy[J]. Chemical Research In Chinese Universities, 2007, 28(4): 627-629 |
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| Authors: | BAO Fang CUI Yan YAO Jian-Lin REN Bin GU Ren-Ao |
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| Affiliation: | Department of Chemistry, Suzhou University, Suzhou 215123, China; ;State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, China |
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| Abstract: | 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. |
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| Keywords: | Au_(core)Co_(shell) nanoparticles Surface enhanced Raman spectroscopy(SERS) Cyclic voltammetry(CV) |
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