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http://dx.doi.org/10.4313/JKEM.2007.20.10.878

Structural Analysis of Carboxylic Acid-functionalized Multi-walled Carbon Nanotubes  

Kim, Jung-Soo (동의대학교 나노공학과)
Lee, Geon-Woong (한국전기연구원 CNT 전극 전문연구랩)
Oh, Weon-Tae (동의대학교 나노공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.20, no.10, 2007 , pp. 878-882 More about this Journal
Abstract
Carboxylated multi-walled carbon nanotubes (MWNTs) were in detail characterized by XRD, XPS, FTIR, and thermogravimetric measurements. Carboxylic acid groups were functionalized to MWNTs under aqueous acid condition. The changes of sonication and reflux conditions rarely influenced the degree of carboxylation on MWNTs, but decreased the thermal stability of the resultant carboxylated MWNTs. XRD results showed that the diffraction peaks (100), (101), and (102) of pristine MWNTs disappeared after acid treatment, but the diffraction peak (002) was Preserved in the carboxylated MWNTs. The introduction of carboxylic acid groups on MWNTs caused to improve the dispersibility of the resultant carboxylated MWNTs in water.
Keywords
Carbon nanotubes; Surface modification; Thin film;
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