Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Structural Analysis of Carboxylic Acid-functionalized Multi-walled Carbon Nanotubes

카복실산으로 표면개질된 다중층 탄소나노튜브의 구조분석

  • 김정수 (동의대학교 나노공학과) ;
  • 이건웅 (한국전기연구원 CNT 전극 전문연구랩) ;
  • 오원태 (동의대학교 나노공학과)
  • Published : 2007.10.01

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.

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