Multi-Walled Carbon Nanotubes with ppm Level of Impurities Full article
Conference |
24th International Winterschool on Electronic Properties of Novel Materials - Molecular Nanostructures 06-13 Mar 2010 , Kirchberg |
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Journal |
Physica Status Solidi (B): Basic Research
ISSN: 0370-1972 , E-ISSN: 1521-3951 |
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Output data | Year: 2010, Volume: 247, Number: 11-12, Pages: 2695-2699 Pages count : 5 DOI: 10.1002/pssb.201000211 | ||||||||||
Tags | High-temperature annealing, Multi-walled carbon nanotubes, Ppm level of impurities, Structural ordering | ||||||||||
Authors |
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Abstract:
Here multi-walled carbon nanotubes (MWNT) of different average diameters with ppm level purity were produced by a low temperature C2H4 pyrolysis on Fe-Co type catalysts combined with forthcoming graphitization at 2200–2800 °C in argon flow. Annealed nanotubes were characterized with X-ray fluorescent analysis, BET surface measurements, HR TEM, X-ray diffraction, DTA analysis, and measurements of temperature and magnetic field dependences of conductivity. The graphitization of MWNT results in removal of residual catalyst metal impurities, reduction of the wall defects, and closure of nanotube tips. It was found that extent of these effects depends on MWNT diameters. It was proposed that the graphitization is caused by a significant thermal displacement and diffusion of carbon atoms at temperatures higher the Debye temperature.
Cite:
Kuznetsov V.L.
, Elumeeva K.V.
, Ishchenko A.V.
, Beylina N.Y.
, Stepashkin A.A.
, Moseenkov S.I.
, Plyasova L.M.
, Molina I.Y.
, Romanenko A.I.
, Anikeeva O.B.
, Tkachev E.N.
Multi-Walled Carbon Nanotubes with ppm Level of Impurities
Physica Status Solidi (B): Basic Research. 2010. V.247. N11-12. P.2695-2699. DOI: 10.1002/pssb.201000211 WOS Scopus РИНЦ
Multi-Walled Carbon Nanotubes with ppm Level of Impurities
Physica Status Solidi (B): Basic Research. 2010. V.247. N11-12. P.2695-2699. DOI: 10.1002/pssb.201000211 WOS Scopus РИНЦ
Dates:
Submitted: | Apr 30, 2010 |
Accepted: | Aug 31, 2010 |
Published online: | Oct 7, 2010 |
Published print: | Dec 1, 2010 |
Identifiers:
Web of science | WOS:000285798400016 |
Scopus | 2-s2.0-78649695733 |
Elibrary | 16869005 |
Chemical Abstracts | 2011:16831 |
Chemical Abstracts (print) | 155:630244 |
OpenAlex | W2000527523 |