物理化学学报 >> 2010, Vol. 26 >> Issue (05): 1214-1218.doi: 10.3866/PKU.WHXB20100335

电化学 上一篇    下一篇

直流电电化学沉积镍制备原位生长碳纳米管化学修饰电极

何正文, 江奇, 杨荣, 亓鹏, 赵斐, 袁华, 赵勇   

  1. 西南交通大学超导研究开发中心,材料先进技术教育部重点实验室, 成都 610031; School of Materials Science and Engineering, University of New South Wales, Sydney 2052 NSW, Australia
  • 收稿日期:2009-08-27 修回日期:2009-12-25 发布日期:2010-04-29
  • 通讯作者: 江奇 E-mail:jiangqi66@163.com

Preparation of Carbon Nanotube Chemically Modified Electrode via Growing In situ Method by the Direct Current Electrochemical Deposition Nickel Catalyst

HE Zheng-Wen, JIANG Qi, YANG Rong, QI Peng, ZHAO Fei, YUAN Hua, ZHAO Yong   

  1. Key Laboratory of Advanced Technologies of Materials, Ministry of Education of China, Superconductivity Research and Development Centre, Southwest Jiaotong University, Chengdu 610031, P. R. China; School of Materials Science and Engineering, University of New South Wales, Sydney 2052 NSW, Australia
  • Received:2009-08-27 Revised:2009-12-25 Published:2010-04-29
  • Contact: JIANG Qi E-mail:jiangqi66@163.com

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摘要：

利用直流电电化学沉积法将生长碳纳米管(CNT)的催化剂镍均匀地附着在石墨电极(GE)表面, 再通过化学气相沉积法制备得到原位生长碳纳米管化学修饰电极(GSCNT-CME). 电化学沉积的金属镍和所制备的修饰电极分别用光学显微镜、扫描电子显微镜(SEM)和电子能谱(EDX)进行表征, 所得修饰电极的电化学性能用[Fe(CN)6]3-/[Fe(CN)6]4-溶液进行表征. 结果表明: 经直流电电化学沉积, 可以在石墨电极表面沉积一层致密的金属镍, 能生长出管径均匀的碳纳米管, 所制得的修饰电极具有良好的电化学响应灵敏性和准确性, 可在电化学检测领域发挥重要的应用.

关键词: 电化学沉积, 碳纳米管化学修饰电极, 原位生长

Abstract:

Grown in situ carbon nanotube chemically modified electrode (GSCNT-CME) was prepared by the in situ growth of carbon nanotube (CNT) onto a pretreated graphite electrode (GE) via catalytic chemical vapor deposition. The pretreated GE was prepared by direct current electrochemical deposition using a nickel catalyst. The deposited nickel and the obtained GSCNT-CME were characterized by optical microscopy, scanning electron microscopy (SEM), and energy dispersive X-ray diffraction(EDX). The electrochemical performance of the obtained GSCNT-CMEs were characterized by cyclic voltammetry using a [Fe(CN)6]3-/[Fe(CN)6]4- solution. Results showed that there was a layer of nickel on the pretreated GE surface after direct current electrochemical deposition and CNT with uniform tube diameters were present on the surface of the GE. The prepared GSCNT-CME has good current response sensitivity and good accuracy. It may be applied in electrochemical testing field.

Key words: Electrochemical deposition, Carbon nanotube chemically modified electrode, Grown in situ