Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Physical Properties and Morphology of Carbon Nanotubes Prepared by Thermal and Plasma CVD of Acetylene

아세틸렌의 열 및 플라즈마 CVD법으로 제조한 탄소나노튜브의 물성과 구조적 특성

  • Kim, Myung-Chan (Department of Chemical Engineering, Myongji University) ;
  • Moon, Seung-Hwan (Department of Chemical Engineering, Myongji University) ;
  • Lim, Jae-Seok (Department of Chemical Engineering, Myongji University) ;
  • Hahm, Hyun-Sik (Department of Chemical Engineering, Myongji University) ;
  • Kim, Myung-Soo (Department of Chemical Engineering, Myongji University)
  • 김명찬 (명지대학교 공과대학 화학공학과) ;
  • 문승환 (명지대학교 공과대학 화학공학과) ;
  • 임재석 (명지대학교 공과대학 화학공학과) ;
  • 함현식 (명지대학교 공과대학 화학공학과) ;
  • 김명수 (명지대학교 공과대학 화학공학과)
  • Published : 2004.06.30
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Abstract

Multi-walled carbon nanotubes (CNTs) were prepared by thermal chemical vapor deposition (CVD) and microwave plasma chemical vapor deposition (MPCVD) using various combination of binary catalysts with four transition metals such as Fe, Co, Cu, and Ni. In the preparation of CNTs from acetylene precursor by thermal CVD, the CNTs with very high yield of 43.6 % was produced over $Fe-Co/Al_2O_3$. The highest yield of CNTs was obtained with the catalyst reduced for 3 hr and the yield was decreased with increasing reduction time to 5 hr, due to the formation of $FeAl_2O_4$ metal-aluminate. On the other hand, the CNTs prepared by acethylene plasma CVD had more straight, smaller diameter, and larger aspect ratio(L/D) than those prepared by thermal CVD, although their yield had lower value of 27.7%. The degree of graphitization of CNTs measured by $I_d/I_g$ value and thermal degradation temperature were 1.04 and $602^{\circ}C$, respectively.

Keywords

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  1. 메탄 플라즈마 CVD법으로 합성한 탄소나노튜브의 구조적 특성 vol.21, pp.4, 2004, https://doi.org/10.12925/jkocs.2004.21.4.4