物理化学学报 >> 2009, Vol. 25 >> Issue (11): 2395-2398.doi: 10.3866/PKU.WHXB20091031

研究论文 上一篇    下一篇

电弧放电法制备大面积高纯单壁碳纳米管薄膜

李振华, 姜源, 赵沛, 尚学府, 杨辉, 王淼   

  1. 浙江大学力学系, 杭州 310027|沈阳工业大学物理系, 沈阳 110023|浙江大学物理系, 杭州 310027|浙江大学微系统研究与开发中心, 杭州310027
  • 收稿日期:2009-04-20 修回日期:2009-07-21 发布日期:2009-10-28
  • 通讯作者: 王淼 E-mail:miaowang@css.zju.edu.cn

Synthesis of Single-Walled Carbon Nanotube Films with Large Area and High Purity by Arc-Discharge

LI Zhen-Hua, JIANG Yuan, ZHAO Pei, SHANG Xue-Fu, YANG Hui, WANG Miao   

  1. Department of Mechanics, Zhejiang University, Hangzhou 310027, P. R. China|Department of Physics, Shenyang University of Technology, Shenyang 110023, P. R. China|Department of Physics, Zhejiang University, Hangzhou 310027, P. R. China|Micro System Center for Research and Development, Zhejiang University, Hangzhou 310027, P. R. China
  • Received:2009-04-20 Revised:2009-07-21 Published:2009-10-28
  • Contact: WANG Miao E-mail:miaowang@css.zju.edu.cn

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摘要：

介绍了一种制备大面积高纯度单壁碳纳米管(SWCNT)薄膜的新方法. 利用改进的电弧放电法, 在真空放电室内分别安装两枚石墨极板, 使之形成一个球冠型电容器. 使用这种新型装置, 可以在两枚球冠型石墨极板之间产生一个合适的附加电场和成膜基板, 通过控制放电时间, 可在阴极的球冠型石墨极板上制备出厚度从数微米至1毫米不等的SWCNT薄膜. 场发射扫描电子显微镜(FESEM)、高分辨透射电子显微镜(HRTEM)、拉曼光谱和热重分析(TGA)的表征结果表明, 这个方法可以高效地制备具有高纯度的SWCNT薄膜.

关键词: 单壁碳纳米管, 薄膜, 电弧放电法, 球冠形电容器, 拉曼光谱, 热重分析

Abstract:

A novel method to synthesize single-walled carbon nanotube (SWCNT) films with large area and high purity was introduced. An arc-discharge facility was improved by adding two graphite plates to the electrodes to form a spherical cap capacitor in the vacuum cavity so that an additional electric field of appropriate intensity could be generated. Using this new facility, single-walled carbon nanotube films of different thicknesses ranging from a few microns to amillimeter (controlled by the discharge time) were synthesized on a spherical cathode graphite plate. The film structures were characterized by field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), Raman spectroscopy, and thermogravimetric analysis (TGA). Results show that this is an efficient way to produce single-walled carbon nanotube films of high purity.

Key words: Single-walled carbon nanotube, Film, Arc-discharge method, Capacitor of spherical cap, Raman spectrum, Thermogravimetric analysis