Comparative studies on acid and thermal based selective purification of HiPCO produced single-walled carbon nanotubes

J.G. Wiltshire; A.N. Khlobystov; L.J. Li; S.G. Lyapin; G.A.D. Briggs; R.J. Nicholas

doi:10.1016/j.cplett.2004.01.067

Comparative studies on acid and thermal based selective purification of HiPCO produced single-walled carbon nanotubes

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Comparative studies on acid and thermal based selective purification of HiPCO produced single-walled carbon nanotubes

J.G. Wiltshire, A.N. Khlobystov, L.J. Li, S.G. Lyapin, G.A.D. Briggs 和 R.J. Nicholas

Chemical Physics Letters, 卷.386(4-6), 頁碼.239-243

03/2004

DOI: https://doi.org/10.1016/j.cplett.2004.01.067

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Physics and Astronomy (all)

Physical and Theoretical Chemistry

We report a comparative study on gas and liquid phase oxidative treatments of SWNTs, using a HiPCO produced raw material with a broad distribution of nanotube diameters. The effects of these two processes were correlated using absorption and Raman spectroscopy (radial breathing and G modes) and TEM. We conclude that liquid phase oxidation is a continuous diameter-selective process eliminating narrower SWNTs through oxidizing sidewalls of SWNTs. Gas phase oxidation is a more discrete process requiring high activation energy for diameter-selective purification. Unlike liquid phase oxidation the gas phase process preferentially oxidizes SWNTs without introducing sidewall defects. © 2003 Elsevier B.V. All rights reserved.

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題名: Comparative studies on acid and thermal based selective purification of HiPCO produced single-walled carbon nanotubes
創作者：: J.G. Wiltshire (作者) - University of Oxford
A.N. Khlobystov (作者) - University of Oxford
L.J. Li (作者) - University of Oxford
S.G. Lyapin (作者) - University of Oxford
G.A.D. Briggs (作者) - University of Oxford
R.J. Nicholas (作者) - University of Oxford
學術資源類型: 期刊文章
出版日期: 03/2004
出版資訊: Chemical Physics Letters, 卷.386(4-6), 頁碼.239-243
語言: 英語

Comparative studies on acid and thermal based selective purification of HiPCO produced single-walled carbon nanotubes

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