Diameter-controlled synthesis of carbon nanotubes

Chin Li Cheung, Andrea Kurtz, Hongkun Park, Charles M. Lieber

Research output: Contribution to journalArticle

690 Scopus citations

Abstract

Nearly monodisperse iron nanoclusters have been used to define the diameters of carbon nanotubes grown by chemical vapor deposition (CVD). Iron nanoparticles with average diameters of 3, 9, and 13 nm were used to grow carbon nanotubes with average diameters of 3, 7, and 12 nm, respectively. Transmission electron microscopy studies of the nanotubes show that the as-grown nanotubes are single-walled carbon nanotubes (SWNTs) or thin multiwalled carbon nanotubes (MWNTs) with 2 or 3 layers. Investigations of the growth conditions also demonstrate that the supply Q f carbon reactant is critical for enabling the growth of large diameter nanotubes from large iron nanoclusters, and that the growth temperature is especially important for achieving high-quality large diameter nanotubes. The implications of these results and possible applications of the nanotubes are discussed.

Original languageEnglish (US)
Pages (from-to)2429-2433
Number of pages5
JournalJournal of Physical Chemistry B
Volume106
Issue number10
DOIs
StatePublished - Mar 14 2002

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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