On the growth mechanism of single-walled carbon nanotubes by catalytic carbon vapor deposition on supported metal catalysts

J. B. Nagy, G. Bister, A. Fonseca, D. Méhn, Z. Kónya, I. Kiricsi, Z. E. Horváth, L. P. Biró

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

A comprehensive kinetic study was performed to throw light on the formation mechanism of single walled carbon nanotubes (SWNTs) in chemical vapor deposition processes. SWNTs were synthesized by catalytic decomposition of methane or ethylene on supported transition metal catalysts. Kinetic curves (the amount of SWNT as a function of time) were obtained as a function of the nature and the preparation of the supported catalysts, temperature, the fluxes of the gases (the reagent hydrocarbon and the carrying gas), and the partial pressure of the hydrocarbon. The final products were characterized by transmission electron microscopy, Raman spectroscopy, chemical analysis, and thermogravimetric measurements. The fundamental factors determining the SWNT formation are discussed in detail, taking into consideration several observations from the literature as well.

Original languageEnglish
Pages (from-to)326-345
Number of pages20
JournalJournal of Nanoscience and Nanotechnology
Volume4
Issue number4
DOIs
Publication statusPublished - Apr 1 2004

Keywords

  • Carbon
  • Catalyst
  • Catalytic Chemical Vapor Deposition
  • Growth
  • Mechanism
  • Nanotube
  • Synthesis

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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