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Effect of purification on the electron structure and field emission characteristics of a carbonaceous material containing single-wall carbon nanotubes

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Abstract

A carbonaceous material containing single-wall carbon nanotubes (SWNTs) has been synthesized by arc-discharge evaporation of graphite with a catalytic additive of nickel and cobalt powders. The synthesized SWNTs were purified from an amorphous carbon component (soot) and the catalyst particles by boiling in nitric acid. A comparison of the X-ray fluorescence spectra measured before and after this treatment showed that acid etching significantly decreased the content of soot in the material. The material enriched with SWNTs is characterized by a reduced threshold for the appearance of the field emission current, which is explained by a decrease in the screening effect of soot. The current-voltage characteristics of SWNTs exhibit a hysteresis, which is suggested to be due to the adsorption of molecules and radicals on the surface and at the ends of carbon nanotubes.

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Authors and Affiliations

  1. Nikolaev Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    A. V. Okotrub, L. G. Bulusheva & A. V. Gusel’nikov

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  1. A. V. Okotrub
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  2. L. G. Bulusheva
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  3. A. V. Gusel’nikov
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Additional information

__________

Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 126, No. 6, 2004, pp. 1425–1434.

Original Russian Text Copyright © 2004 by Okotrub, Bulusheva, Gusel’nikov.

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Okotrub, A.V., Bulusheva, L.G. & Gusel’nikov, A.V. Effect of purification on the electron structure and field emission characteristics of a carbonaceous material containing single-wall carbon nanotubes. J. Exp. Theor. Phys. 99, 1244–1252 (2004). https://doi.org/10.1134/1.1854812

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