CVD synthesis of high-purity multiwalled carbon nanotubes using CaCO 3 catalyst support for large-scale production

E. Couteau, K. Hernadi, J. W. Seo, L. Thiên-Nga, Cs Mikó, R. Gaál, L. Forró

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Multiwalled carbon nanotubes (MWCNTs) were synthesized in a catalytic reaction using CaCO3 as catalyst support. Impregnated with conventional catalysts CaCO3 enabled the production of MWCNTs in a fixed-bed flow reactor at relatively low reaction temperature. The purification was performed in one step: both metallic particles and catalyst support were dissolved in a diluted acid. Hence, disadvantages, namely multi-step processes and hazardous chemicals, were avoided. A further advantage of CaCO3 support is efficient and stable growth of MWCNTs. First results obtained in our new rotary-tube oven indicated high quality and pure MWCNTs with a yield of 100 g/day by this method.

Original languageEnglish
Pages (from-to)9-17
Number of pages9
JournalChemical Physics Letters
Issue number1-2
Publication statusPublished - Aug 29 2003


ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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