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Citation: HUANG Qing-Hua, YAN Jun-Guo, XU Min, ZHANG Hui-Ping, CHEN Qun. Effects of Oxidation Time on the Structure and Performance of Multi-walled Carbon Nanotubes[J]. Chinese Journal of Applied Chemistry, ;2005, 22(1): 59-62. shu

Effects of Oxidation Time on the Structure and Performance of Multi-walled Carbon Nanotubes

1.
Analytical Center and the Key Laboratory of Education Ministry for Optics and Magnetic Resonance Spectroscopy, East China Normal University, Shanghai 200062

Corresponding author: CHEN Qun,
Received Date: 18 December 2003
Available Online: 25 March 2004
Fund Project: 上海市纳米专项基金(0252NM011) (0252NM011)

Multi-walled carbon nanotubes(MWNTs) were oxidized and cut in a mixture of concentrated sulfuric and nitric acids under sonication to introduce carboxyl and hydroxyl groups onto MWNTs. TEM|resistance measurement and ¹H NMR were used to study the effect of oxidation on the length|resistivity and the amount of hydrogen in the oxidized MWNTs. The results show that 10 h of oxidation may be the most favorite condition to shorten the carbon nanotubes and introduce enough functional groups with inherent properties of MWNTs being remained as much as possible.
- carbon nanotube,
- oxidation,
- TEM,
- NMR,
- resistance
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