A.9
Log Number: 7
Abstract Submitted to the NT-99-Logo NANOTUBE-99 Workshop:

Morphology and electronic structure of arc-discharge carbon nanotubes

A.V. Okotrub1, A.L. Chuvilin2, L.G. Bulusheva1, D. Tománek3

1 Institute of Inorganic Chemistry SB RAS, pr. Ak. Lavrenteva 3, Novosibirsk 630090, Russia
2 Institute of Catalysis SB RAS, pr. Ak. Lavrenteva 5, Novosibirsk 630090, Russia
3 Department of Physics and Astronomy, Michigan State University, East Lansing
Contact e-mail: spectrum@che.nsk.su

A relationship between the multiwall carbon nanotubes content in the inner part of deposit and the pressure value in arc-discharge setup was investigated. The influence of metals addition on the morphology of carbon cage particles forming in the deposit and in the soot collected on chamber walls was studied by the high-resolution electron microscopy. Carbon nanotubes morphology dependence of electronic structure was investigated by X-ray fluorescence spectroscopy. CKa spectrum of sample from the inner part of the deposit which was formed at the high temperature (>2.500 C) is similar to that of polycrystal graphite. CKa spectra of single-wall carbon nanotubes produced in the various conditions are similar each to other but differ from the X-ray spectrum of multiwall particles. Theoretical consideration shows this difference may be explain by high defectively of single-wall carbon nanotubes caused by its deformation or partial hydrogenation.

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