Parametric study of synthesis conditions in plasma-enhanced CVD of high-quality single-walled carbon nanotubes

Matthew R. Maschmann, Placidus B. Amama, Amit Goyal, Zafar Iqbal, Roy Gat, Timothy S. Fisher

Research output: Contribution to journalArticlepeer-review

94 Scopus citations

Abstract

High-quality single-walled carbon nanotubes (SWCNTs) have been synthesized from H2-CH4 mixtures on a MgO-supported bimetallic Mo/Co catalyst using microwave plasma-enhanced chemical vapor deposition (PECVD). Reaction parameters including temperature, H2:CH4 ratio, plasma power, and synthesis time have been examined to assess their influence on SWCNT synthesis. Raman spectroscopy and high-resolution field emission scanning electron microscopy reveal that the quality, selectivity, density and predominant diameter of SWCNTs depend on the varied synthesis parameters. Results of this study can be used to optimize SWCNT synthesis conditions and products and to improve understanding of the growth of SWCNTs by PECVD.

Original languageEnglish (US)
Pages (from-to)10-18
Number of pages9
JournalCarbon
Volume44
Issue number1
DOIs
StatePublished - Jan 2006

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Keywords

  • Carbon nanotubes
  • Plasma deposition
  • Raman spectroscopy

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