Log Number: P150
Abstract Submitted to the    NANOTUBE'04 Conference:

Y/Ni AND Ru/Fe CATALYTIC ROUTE TO CARBON NANOTUBE SYNTHESIS BY HYDROGEN ARC DISCHARGE

Z. Martinez1,F. Hidalgo2,J. Ortiz-Lopez1, J.S. Arellano-Peraza3,C. Mejia-Garcia1,J. Chavez-Carvayar4

1 Departamento de Fisica, Escuela Superior de Fisica y Matematicas, Instituto Politecnico Nacional, 07738 Mexico D.F.,2.
2 CETIS No. 8, Rafael Donde, DGETI-SEP, 11320 Mexico D.F.
3 Area de Fisica Atomica Molecular Aplicada, U.A.M.-Azcapotzalco, Mexico D.F.
4 Instituto de Investigaciones en Materiales, U.N.A.M., 04510 Mexico D. F.

Contact e-mail: jortiz@esfm.ipn.mx

Single wall carbon nanotube (SWNT) synthesis with arc discharge methods are usually performed under an inert gas atmosphere like He or Ar. The use of a non-inert gas like H2 may also result in efficient SWNT synthesis if sulphur or a sulphur containing compound is added as catalyst [1]. Arc discharge under hydrogen gas using Ni/Fe/Co/FeS as catalysts has been shown to be a high-yield method for the synthesis of SWNT [1, 2]. In order to evaluate the efficiency of SWNT hydrogen arc discharge synthesis under various conditions, we assayed novel catalytic routes using Y/Ni/FeS and Ru/Fe/FeS mixtures. We find that Ru/Fe/FeS is better but still less efficient than a Ni/Fe/Co/FeS mixture. Our samples are analyzed with Raman scattering, photoluminescence and transmission electron microscopy. We compare our data with reported production of SWNT by other methods involving similar catalytic mixtures.

References:

1. C. Liu et al., Carbon 37, 1865 (1999).
2. J. Ortiz-Lopez et al., Second International Applied Statistical Physics Molecular Engineering Conference, ASTATPHYS 2003, Mexico.

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