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Parametric study of synthesis conditions in plasma-enhanced CVD of high-quality single-walled carbon nanotubes |
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| Authors: | Matthew R Maschmann Placidus B Amama Zafar Iqbal Timothy S Fisher |
| Affiliation: | a Purdue University, School of Mechanical Engineering, West Lafayette, IN 47904, USA b Purdue University, Birck Nanotechnology Center, West Lafayette, IN 47904, USA c New Jersey Institute of Technology, Department of Chemistry, Newark, NJ 07102, USA d Sekitechnotron USA, 1153 Bordeaux Dr #102, Sunnyvale, CA 94089, USA |
| 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. |
| Keywords: | Carbon nanotubes Plasma deposition Raman spectroscopy |
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