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Progress in Plasma Processing of Materials, 2001

ISBN Imprimir: 1-56700-165-3

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

Resumo

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.
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