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Applied Physics A

, Volume 67, Issue 1, pp 11–22 | Cite as

Synthesis of single- and multi-wall carbon nanotubes over supported catalysts

  • A. Fonseca
  • K. Hernadi
  • P. Piedigrosso
  • J.-F. Colomer
  • K. Mukhopadhyay
  • R. Doome
  • S. Lazarescu
  • L.P. Biro
  • P. Lambin
  • P.A. Thiry
  • D. Bernaerts
  • J.B. Nagy
Regular paper

The quantities of deposited carbon were measured and the quality of the nanotubes was characterized by means of transmission electron microscopy and scanning tunneling microscopy. The inner and outer diameters of the nanotubes were also measured and the diameter distribution histograms were established. The multi-wall straight and coiled nanotubes were found to be quite regular with an average inner (outer) diameter of 4–7 nm (15–25 nm) and with lengths up to 50 μm. The walls contain concentric cylindrical graphene sheets separated by the graphitic interlayer distance. The single-wall nanotubes were found as bundles of hundreds of aligned straight 1-nm-diameter nanotubes with lengths up to 1-μm.

The influence of various parameters such as the method of catalyst preparation, the nature and the pore size of the support, the nature of the metal, the quantity of catalyst active particles, and the reaction conditions on the nanotubes formation were studied. The numbers and dimensions of the catalyst active particles dispersed on the support were found to be of importance in regulating the shape of the produced nanotubes. Following these results, a model of growth mechanism was suggested for the nanotubes obtained by this method.

Keywords

Transmission Electron Microscopy Carbon Nanotubes Outer Diameter Growth Mechanism Graphene Sheet 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1998

Authors and Affiliations

  • A. Fonseca
    • 1
  • K. Hernadi
    • 1
  • P. Piedigrosso
    • 1
  • J.-F. Colomer
    • 1
  • K. Mukhopadhyay
    • 1
  • R. Doome
    • 1
  • S. Lazarescu
    • 1
  • L.P. Biro
    • 1
  • P. Lambin
    • 1
  • P.A. Thiry
    • 1
  • D. Bernaerts
    • 2
  • J.B. Nagy
    • 1
  1. 1.Institute for Studies in Interface Science, Facultés Universitaires Notre-Dame de la Paix, Rue de Bruxelles 61, B-5000 Namur, BelgiumBE
  2. 2.EMAT, University of Antwerp (RUCA), Groenenborgerlaan 171, B-2020 Antwerp, BelgiumBE

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