物理化学学报 >> 2004, Vol. 20 >> Issue (10): 1242-1244.doi: 10.3866/PKU.WHXB20041015

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聚乙烯醇用于碳纳米管的开口及修饰研究

黄祥平;吕海峰;黄新堂   

  1. 华中师范大学物理科学与技术学院,武汉　430079; 三峡大学理学院,宜昌　443003
  • 收稿日期:2004-04-02 修回日期:2004-05-10 发布日期:2004-10-15
  • 通讯作者: 黄新堂 E-mail:xthuang@phy.ccnu.edu.cn

A Simple Chemical Method of Opening and Decorating Carbon Nanotubes by Polyvinyl Alcohol

Huang Xiang-Ping;Lü Hai-Feng;Huang Xin-Tang   

  1. College of Physical Science and Technology, Central China Normal University, Wuhan　430079; College of Science, China Three Gorges University, Yichang　443003
  • Received:2004-04-02 Revised:2004-05-10 Published:2004-10-15
  • Contact: Huang Xin-Tang E-mail:xthuang@phy.ccnu.edu.cn

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摘要： 在低温(250 ℃)下,用聚乙烯醇(polyvinyl alcohol, PVA)和提纯后的碳纳米管(carbon nanotubes, CNTs)的混合物在空气中加热,以研究聚乙烯醇对碳纳米管的修饰作用,并采用TEM对不同条件下所得的产物进行了形态分析.结果发现,碳纳米管的顶端被打开,随着时间的增加,弯曲的碳纳米管断裂成较短的碳纳米管.聚乙烯醇对碳纳米管的氧化及修饰在实验中得到证实.讨论分析了氧化和修饰机理,认为可能是聚乙烯醇在空气中分解所得的产物的一种或几种在氧化和修饰过程中起主要作用.

关键词: 聚乙烯醇, 碳纳米管, 氧化, 开口, 修饰

Abstract: At low temperature(about 250 ℃), the mixture of polyvinyl alcohol(PVA)and purified carbon nanotubes (CNTs) was heated in the air to study the effect of PVA on the morphologies of the carbon nanotubes. The TEM pictures show that the top of the carbon nanotubes is opened, and the intertwisting carbon nanotubes are cut into short carbon nanotubes. The quantity of the short nanotubes increases with the time consuming. The oxidation and decoration of carbon nanotubes by polyvinyl alcohol have been demonstrated in these experiments. Based on these results, the mechanism of the oxidation and decoration is proposed, which indicates that one or more products generated from the decomposition of polyvinyl alcohol play an important role in the process of the reaction.

Key words: Polyvinyl alcohol, Carbon nanotubes, Oxidation, Opening, Decorating