物理化学学报 >> 2004, Vol. 20 >> Issue (01): 1-4.doi: 10.3866/PKU.WHXB20040101

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单壁碳纳米管氧化过程的银纳米粒子跟踪

牛佳莉;邹红玲;张锦;刘忠范   

  1. 北京大学化学与分子工程学院,北京大学纳米科学与技术研究中心,北京 100871
  • 收稿日期:2003-09-03 修回日期:2003-10-14 发布日期:2004-01-15
  • 通讯作者: 张锦 E-mail:jzhang@.chem.pku.edu.cn

Tracing the Chemical Oxidation Process of Single-walled Carbon Nanotubes by Silver Nanoparticles

Niu Jia-Li;Zou Hong-Ling;Zhang Jin;Liu Zhong-Fan   

  1. Center for Nanoscale Science and Technology(CNST), College of Chemistry & Molecular Engineering, Peking University, Beijing 100871
  • Received:2003-09-03 Revised:2003-10-14 Published:2004-01-15
  • Contact: Zhang Jin E-mail:jzhang@.chem.pku.edu.cn

摘要: 基于银与羧基之间的相互作用,利用银纳米粒子跟踪稀硝酸氧化单壁碳纳米管的过程.通过比较银纳米粒子对稀硝酸氧化不同时间所得单壁碳纳米管的跟踪情况,推测了该氧化可能是沿着碳纳米管的缺陷边缘处对其进行缓慢腐蚀的过程.

关键词: 单壁碳纳米管(SWNTs), 氧化, Ag纳米粒子, 缺陷

Abstract: We proposed here a simple technique for tracing the chemical oxidation process of single-walled carbon nanotubes (SWNTs) by using silver nanoparticles. SWNTs were prepared by chemical vapor deposition (CVD) and dilute nitricacid (2.6 mol•L-1) was used as oxidant for introducing carboxylic acid groups at the end or surface of the tubes. Based on the interaction between -COOH groups and silver nanoparticles, the oxidation procedure can be traced successfully. The results suggest that refluxing of SWNTs in HNO3 may introduce carboxylic acid groups mostly at the original defect sites and few defects is newly created along the SWNTs walls.

Key words: SWNTs, Oxidation, Ag nanoparticles, Defect