대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

촉매제어를 통한 촉매화학기상증착법으로 성장시킨 탄소나노튜브의 특성분석

The characteristics of grown carbon nanotubes by controlled catalyst preparation at the catalytic chemical vapor deposition

  • 김종식 (중앙대학교 전자전기공학부) ;
  • 김관하 (중앙대학교 전자전기공학부) ;
  • 김창일 (중앙대학교 전자전기공학부)
  • Kim, Jong-Sik (School of Electrical and Electronic Engineering) ;
  • Kim, Gwan-Ha (School of Electrical and Electronic Engineering) ;
  • Kim, Chang-Il (School of Electrical and Electronic Engineering)
  • 발행 : 2006.07.12
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초록

Carbon nanotubes (CNTs) with few defects and very small amount of amorphous carbon coating have been synthesized by catalytic decomposition of acetylene in $H_2$ over well-dispersed metal particles supported on MgO. The yield, quality and diameters of CNTs were obtained by control of catalyst metal compositions to be used. The optimization condition of carbon nanotubes with high yield is when Co and Mo are in a 1:1 ratio and Fe metal contents to Co is increased on magnesium oxide support. It is also found that the diameter of the as-prepared CNTs can be controlled mainly by adjusting the molar ratio of Fe-Mo, Co-Fe, and Co-Mo versus the MgO support. Our results indicated that desired diameter distribution of CNTs is obtained by choosing or combining the catalyst to be employed.

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