Arc-Discharge Synthesis of Carbon Nanohorns and Multiwalled Carbon Nanotubes |
| Journal |
Materials Science Forum (Volume 518) |
| Volume |
Recent Developments in Advanced Materials and Processes |
| Edited by |
Dragan P. Uskokovic, Slobodan K. Milonjic and Dejan I. Rakovic |
| Pages |
23-28 |
| DOI |
10.4028/www.scientific.net/MSF.518.23 |
| Online since |
July, 2006 |
| Authors |
Daniele Mirabile Gattia, Marco Vittori Antisari, Renzo Marazzi, Luciano Pilloni, Vittoria Contini, Amelia Montone |
| Keywords |
Arc Discharge, Electron Microscopy, Single-Walled Carbon Nanohorns |
| Abstract |
Carbon nanohorns and multiwalled carbon nanotubes have been synthesized by DC arcdischarge
carried out at room pressure in air and Ar-enriched environment, by a specially designed
experimental device. The resulting nanostructured material, characterized by electron microscopy
and X-ray diffraction, shows different structures according to the condensation channels through
which the sublimated carbon atoms are re-condensed in the solid state. Multi-Walled Carbon Nano-
Tubes are mainly found in the hard crust formed at the cathode, while nano-horned particles can be
recovered from a cylindrical collector surrounding the discharge. Further material, rag-like shaped
and with an amorphous structure, can be collected in the reaction area. When the discharge occurs
under Ar atmosphere, a larger quantity of this latter phase is synthesized. This suggests that the
atmospheric oxygen could play an active role by burning the most reactive among the synthesized
phases, like amorphous carbon contributing so to an “in situ” purification of the raw material. |
| Full Paper |
Get the full paper by clicking here
|
