期刊
CARBON
卷 46, 期 15, 页码 2124-2132出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2008.09.029
关键词
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资金
- National Science Council of Taiwan [NSC 96-2113-M-033-006-MY2, NSC 95-2745-M-033-001-URD]
- Ministry of Education, Taiwan
- ITRI [6301XS3610]
Multiwalled carbon nanotubes (MWCNTs) were treated with an atmospheric pressure plasma source using an argon/water mixture. Optical emission diagnostics has shown that hydroxyl radicals (OH) were the major reactive species in the plasma. The structural changes in MWCNTs were monitored by micro-Raman spectroscopy. The observed variation of the D and G band intensity ratio and position dispersion with plasma treatment time was ascribed to the change in structural disorder on MWCNT surfaces. Scanning electron microscopic study showed that some defects can be induced in MWCNTs during plasma treatment. Results of thermogravimetric analysis indicated that atmospheric pressure OH plasma is as effective as traditional wet methods for purifying MWCNTs. (C) 2008 Elsevier Ltd. All rights reserved.
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