Arc-discharge synthesis of carbon nanohorns and multiwalled carbon nanotubes

TitleArc-discharge synthesis of carbon nanohorns and multiwalled carbon nanotubes
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2006
AuthorsMirabile Gattia, Daniele, Antisan M.V., Marazzi R., Pilloni L., Contini V., and Montone A.
JournalMaterials Science Forum
Volume518
Pagination23-28
ISBN Number9780878494057
ISSN02555476
KeywordsArc-discharge, Electric arcs, Multiwalled carbon nanotubes (MWCN), Nanostructured materials, Pressure effects, Single-walled carbon nanohorns, Single-walled carbon nanotubes (SWCN), Synthesis (chemical)
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 NanoTubes 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.

Notes

cited By 6; Conference of 7th Conference of the Yugoslav Materials Research Society - Recent Developments in Advanced Materials and Processes, YUCOMAT VII ; Conference Date: 12 September 2005 Through 16 September 2005; Conference Code:70887

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