, Volume 74, Issue 3, pp 345-348

CVD synthesis and purification of single-walled carbon nanotubes on aerogel-supported catalyst

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Single-walled carbon nanotubes (SWNTs) were synthesized by disproportionation of carbon monoxide on an aerogel-supported Fe/Mo catalyst. A simple acidic treatment followed by an oxidation process produced a high purity (>99%) of SWNTs. The nanotubes obtained are bundled SWNTs and free of amorphous-carbon coating. Several factors that affect the yield and the quality of the SWNTs were also studied. This method shows great promise for large-scale production of SWNTs.

Received: 30 August 2001 / Accepted: 3 December 2001 / Published online: 4 March 2002