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Synthesis and crystallinity of carbon nanotubes produced by a vapor-phase growth method

Authors:	S.C.?Lyu,H.W.?Kim,S.J.?Kim,J.W.?Park,C.J.?Lee author-information" > author-information__contact u-icon-before" > mailto:cjlee@hanyang.ac.kr" title=" cjlee@hanyang.ac.kr" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author

Affiliation:	(1) Department of Nanotechnology, Hanyang University, Seoul, 133-791, Korea;(2) School of Materials Science and Engineering, Inha University, Incheon, 402-751, Korea;(3) School of Electrical and Electronic Engineering, Kyungnam University, Masan, 631-701, Korea;(4) School of Advanced Materials Science Engineering, Hanyang University, Seoul, 133-791, Korea

Abstract:	We have studied the effect of temperature on the growth and crystallinity of carbon nanotubes (CNTs), synthesized by a vapor-phase growth method using a catalytic reaction of iron pentacarbonyl (Fe(CO)₅) and acetylene (C₂H₂) gas. By increasing the growth temperature from 750 °C to 950 °C, both the growth rate and the diameter of the CNTs increase. Moreover, the crystallinity of the graphite sheets improves progressively with increasing growth temperature. Adjustment of the growth temperature gives potential for controlled growth of CNTs in a large-scale synthesis of CNTs. PACS 61.46.+w; 68.37.-d; 81.07.De

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