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18 March 2002 Catalytic activities of metals for single-wall carbon nanotube growth during CO2 laser vaporization
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Proceedings Volume 4636, Nanoscience Using Laser-Solid Interactions; (2002)
Event: High-Power Lasers and Applications, 2002, San Jose, California, United States
Catalytic activities of Fe, Pt, and Ni/Co metals were compared in the synthesis of single-wall carbon nanotubes (SWNTs) by using CO2 laser vaporization. In room temperature laser vaporization in AR gas under pressures of 150-760 Torr, a small amount of SWNTs, forming thin bundles, were synthesized by Pt and Ni/Co catalysts. However, SWNTs were not synthesized by using an Fe catalyst. The central diameters of SWNTs were 1.51 and 1.33 nm for the Pt and Ni/Co catalysts, respectively. At 1200 degree(s)C, thick bundles of SWNTs with a central diameter of 1.39nm were synthesized for Ni/Co in high yield (>70%0. However, the increase in SWNT yield was not significant when using a Pt catalyst at 1200 degree(s)C. We discuss catalytic growth of SWNTs in terms of eutectic temperatures of Pt-C and Ni/Co-C phases.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fumio Kokai, T. Kameshima, T. Miyazaki, Kunimitsu Takahashi, Daisuke Kasuya, Masako Yudasaka, and Sumio Iijima "Catalytic activities of metals for single-wall carbon nanotube growth during CO2 laser vaporization", Proc. SPIE 4636, Nanoscience Using Laser-Solid Interactions, (18 March 2002);

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