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Progress in Plasma Processing of Materials, 2001

ISBN:
1-56700-165-3 (Print)

HIGH TEMPERATURE SYNTHESIS OF CARBON NANOTUBES: A COMPARISON OF PLASMA, LASER AND SOLAR PROCESSES

Gilles Flamant
CNRS PROMES UPR 8521, Tecnosud, Rambla de la Thermodynamique, 66100 Perpignan, France

T. Guillard
Institut de Science et de Genie des Materiaux et Procedes, IMP-CNRS B.P.5, Odeillo, 66125 FONT-ROMEU Cedex, FRANCE

J. M. Badie
C. N. R. S., Institut de Science et de Genie des Materiaux et Procedes B. P. 5, Odeillo, F-66125 Font-Romeu Cedex

D. Laplaze
Groupe de Dynamique des Phases Condensees, GDPC-UM2 C.C. 026, Univ. de Montpellier II, 34095 MONTPELLIER Cedex 05, FRANCE

L. Alvarez
Groupe de Dynamique des Phases Condensees, GDPC-UM2 C.C. 026, Univ. de Montpellier II, 34095 MONTPELLIER Cedex 05, FRANCE

J.L. Sauvajol
Groupe de Dynamique des Phases Condensees, GDPC-UM2 C.C. 026, Univ. de Montpellier II, 34095 MONTPELLIER Cedex 05, FRANCE

Abstract

Carbon single-wall nanotubes (SWNTs) can be produced from carbon sublimation by various methods; we have compared electric arc and laser techniques with solar energy processing. Generally, produced SWNTs are not significantly different (on the basis of mean diameter and diameter distribution) for a given catalyst as shown by TEM and Raman spectroscopy characterisation. However, the double-pulse Nd: YAG laser method produces a high purity material but with a poor production rate. Finally, we have demonstrated that the solar processing permit to set the SWNTs mean diameter in the range 0.9 nm-2 nm by changing the catalyst and to control, in a certain extent, the production yield which depend of the temperature distribution inside the reactor.