On the Growth Mechanism of Single-Walled Carbon Nanotubes by Catalytic Carbon Vapor Deposition on Supported Metal Catalysts

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

Source: Journal of Nanoscience and Nanotechnology, Volume 4, Number 4, April 2004 , pp. 326-345(20)

Publisher: American Scientific Publishers

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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.

Keywords: CARBON; CATALYST; CATALYTIC CHEMICAL VAPOR DEPOSITION; GROWTH; MECHANISM; NANOTUBE; SYNTHESIS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2004.069

Publication date: April 1, 2004

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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