Catalytic activities of metals for single-wall carbon nanotube growth during CO2 laser vaporization

Fumio Kokai; T. Kameshima; T. Miyazaki; Kunimitsu Takahashi; Daisuke Kasuya; Masako Yudasaka; Sumio Iijima

doi:10.1117/12.459731

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18 March 2002 Catalytic activities of metals for single-wall carbon nanotube growth during CO₂ laser vaporization

Fumio Kokai, T. Kameshima, T. Miyazaki, Kunimitsu Takahashi, Daisuke Kasuya, Masako Yudasaka, Sumio Iijima

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Proceedings Volume 4636, Nanoscience Using Laser-Solid Interactions; (2002) https://doi.org/10.1117/12.459731
Event: High-Power Lasers and Applications, 2002, San Jose, California, United States

Abstract

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.

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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); https://doi.org/10.1117/12.459731

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