Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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The Effect of Mechanochemical Treatment of the Catalyst in the Preparation of Carbon Nanotubes and their Electrical Properties

탄소나노튜브 합성 및 전기적 특성에 미치는 촉매의 메카노케미컬 처리효과

  • 유형균 (한국화학연구원 화학소재연구부) ;
  • 류호진 (한국화학연구원 화학소재연구부) ;
  • ;
  • 이병일 (유니셈주식회사)
  • Published : 2001.12.01
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Abstract

We report the mechanochemical effect of an Fe(NO$_3$)$_3$$.$9H$_2$O-Al(OH)$_3$sample as catalytic precursor mixed-ground by mixer mill on the growth of carbon nanotubes using thermal chemical vapor deposition method. From and TEM observations, carbon products grown on a ground catalyst were more uniform than those grown on an unground catalyst and most of them were identified as carbon nanobubes. Also, it was observed that field emission properties of products on ground catalyst were superior to those of unground catalyst.

열화학기상증착법으로 탄소나노튜브를 합성할 때, 촉배전구체로 사용하는 Fe(NO$_3$)$_3$.9$H_2O$-Al(OH)$_3$혼합물을 믹서밀을 이용하여 혼합분쇄한 후, 이 혼합물을 사용하영 합성에 미치는 메카노케미컬 효과를 조사하였다. SEM과 TEM 관찰 결과, 분쇄된 촉매 위에서 합성된 탄소생성물이 미분쇄 촉매위에서 성장한 생성물에 비해 훨씬 균일했으며, 대부분의 생성물이 탄소나노튜브로서 존재하였다. 또한, 전류-전압 측정을 통해서, 분쇄 촉매에서의 생성물의 전계 방출 특성이 미분쇄 촉매에서보다 우수함을 확인하였다.

Keywords

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