物理化学学报 >> 2009, Vol. 25 >> Issue (07): 1337-1341.doi: 10.3866/PKU.WHXB20090705

研究论文 上一篇    下一篇

一维铜(核)-镍(壳)纳米结构的制备及其表面增强拉曼光谱

马姗姗, 张迎九, 胡晓阳, 程亮, 周惠华, 田永涛, 李新建, 朱静   

  1. 郑州大学物理系材料物理实验室, 郑州 450052|清华大学材料科学与工程系, 北京电子显微镜中心, 北京 100084
  • 收稿日期:2008-12-25 修回日期:2009-03-27 发布日期:2009-06-26
  • 通讯作者: 张迎九 E-mail:zhangyj2006@zzu.edu.cn

Surface-Enhanced Raman Spectrum and Preparation of One-Dimensional Copper(Core)-Nickel(Shell) Nanostructure

MA Shan-Shan, ZHANG Ying-Jiu, HU Xiao-Yang, CHENG Liang, ZHOU Hui-Hua, TIAN Yong-Tao, LI Xin-Jian, ZHU Jing   

  1. Laboratory of Material Physics, Department of Physics, Zhengzhou University, Zhengzhou 450052, P. R. China|Beijing National Center for Electron Microscopy, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China
  • Received:2008-12-25 Revised:2009-03-27 Published:2009-06-26
  • Contact: ZHANG Ying-Jiu E-mail:zhangyj2006@zzu.edu.cn

摘要:

采用多孔阳极氧化铝模板(AAO)结合直流电化学沉积法, 通过一种新的两步法合成一维铜(核)-镍(壳)纳米结构. 首先制备铜纳米线, 然后对AAO进行扩孔, 利用铜纳米线和AAO孔壁之间的间隙,沉积镍纳米线/纳米管. 通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对其结构和形貌进行表征分析, 所得结果验证了这种方法的可行性. 以腺嘌呤为探针分子研究此种纳米结构的表面增强拉曼散射(SERS)效应, 结果表明, 这种一维纳米材料是一种潜在的SERS活性基底, 拓宽了过渡金属在SERS中的应用.

关键词: 多孔阳极氧化铝模板, 电化学沉积, 扩孔, 核壳纳米结构, 表面增强拉曼光谱

Abstract:

A copper(core)-nickel(shell) nanostructure was synthesized by porous anodic aluminum oxide template (AAO) combined with electrochemical deposition according to a new two-step method, i.e., the copper nanowire core was prepared first and then the AAO pore was widened and followed by the growth of the nickel shell in the interspace between the wall of the pore and the copper nanowire. The structure and morphology were characterized and analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission election microscopy (TEM). The results verified that this method for the fabrication of the core-shell structure was effective. Adenine was used as a probe molecule to investigate the surface-enhanced Raman scattering (SERS) effect of this type of core-shell nanowire and the results revealed that the controllable one-dimensional core-shell nanomaterial is a potential SERS active substrate, which may exploit the use of transition metals for SERS.

Key words: Porous anodic aluminumoxide template, Electrochemical deposition, Pore widening, Core-shell nanostructure, Surface-enhanced Raman spectrum

MSC2000: 

  • O648