Citation: HE Zheng-Wen, JIANG Qi, YANG Rong, QI Peng, ZHAO Fei, YUAN Hua, ZHAO Yong. Preparation of Carbon Nanotube Chemically Modified Electrode via Growing In situ Method by the Direct Current Electrochemical Deposition Nickel Catalyst[J]. Acta Physico-Chimica Sinica, 2010, 26(05): 1214-1218. doi: 10.3866/PKU.WHXB20100335
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
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.
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关键词:
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电化学沉积
- / 碳纳米管化学修饰电极
- / 原位生长
English
Preparation of Carbon Nanotube Chemically Modified Electrode via Growing In situ Method by the Direct Current Electrochemical Deposition Nickel Catalyst
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 od current response sensitivity and od accuracy. It may be applied in electrochemical testing field.
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