Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Influence of Injection Temperature on the Structure of Carbon Nanotubes Synthesized by Floating Catalyst Method

주입온도가 Floating Catalyst 법으로 합성한 탄소나노튜브의 구조에 미치는 영향

  • Kang, Eun-Jin (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) ;
  • Park, Hong-Soo (Department of Chemical Engineering, Myongji University) ;
  • Lim, Yun-Soo (Department of Ceramic Engineering, Myongji University) ;
  • Kim, Myung-Soo (Department of Chemical Engineering, Myongji University)
  • 강은진 (명지대학교 공과대학 화학공학과) ;
  • 문승환 (명지대학교 공과대학 화학공학과) ;
  • 임재석 (명지대학교 공과대학 화학공학과) ;
  • 함현식 (명지대학교 공과대학 화학공학과) ;
  • 박홍수 (명지대학교 공과대학 화학공학과) ;
  • 임연수 (명지대학교 공과대학 세라믹공학과) ;
  • 김명수 (명지대학교 공과대학 화학공학과)
  • Published : 2004.09.30
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Abstract

Although the structure of carbon nanotubes is important factor characterizing its properties, it is very difficult to control the structure of carbon nanotubes (MWNTs) and to predict the range of their diameter, which is the primary factor of MWNTs' physical properties. We tried to control the diameter of MWNTsby governing the feed injection temperature of floating catalyst method. The structure of MWNTs was influenced by the phase change of ferrocene fed as the catalyst,. The carbon nanotubes were very narrow at injection temperatures close to the sublimation pt. of ferrocene, in which most MWNTs had diameters in the range of 20$^{\sim}$30 nm. At injection temperatures between the boiling pt. and melting pt. of ferrocene, the diameters became larger and had broad distribution. However, at injection temperatures higher than the boiling pt., the diameters became narrow again and had very uniform distribution.

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References

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