Study of Multiwalled Graphite Nanotubes and Filaments Formation from Carbonized Products of Polyvinyl Alcohol via Catalytic Graphitization at 600–800°C in Nitrogen Atmosphere Full article
Journal |
Carbon
ISSN: 0008-6223 , E-ISSN: 1873-3891 |
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Output data | Year: 2000, Volume: 38, Number: 7, Pages: 1075-1082 Pages count : 8 DOI: 10.1016/S0008-6223(99)00225-0 | ||
Tags | A. Carbon nanotubes, Carbon filaments, Catalytically grown carbon; B. Graphitization; C. Transmission electron microscopy (TEM) | ||
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Abstract:
The catalytic graphitization of amorphous carbon matrix was carried out at the temperature range of 600–800°C in nitrogen atmosphere. Amorphous carbon matrix with uniformly distributed Fe particles was obtained via catalytic carbonization of polyvinyl alcohol (PVA) at temperatures up to 600°C in nitrogen atmosphere. Using transmission electron microscopy (TEM), selected area diffraction (SAD), scanning electron microscopy (SEM), and X-ray diffractometry (XRD), graphite structures of three types were found in products of catalytic graphitization of amorphous carbon matrix: multiwalled graphite shells wrapping the catalyst particles, cockle-shelled graphite filaments (CSF), and multiwalled graphite nanotubes (MWNT). We suppose that the formation of CSF proceeds through the dissolution of amorphous carbon in the metal, transformation of the catalyst particles into a liquid state, and transfer of dissolved carbon via intermediates to growing filaments. Graphite nanotubes nucleate at the matrix surface and then grow in the porous space of the matrix.
Cite:
Krivoruchko O.P.
, Maksimova N.I.
, Zaikovskii V.I.
, Salanov V.I.
Study of Multiwalled Graphite Nanotubes and Filaments Formation from Carbonized Products of Polyvinyl Alcohol via Catalytic Graphitization at 600–800°C in Nitrogen Atmosphere
Carbon. 2000. V.38. N7. P.1075-1082. DOI: 10.1016/S0008-6223(99)00225-0 WOS Scopus РИНЦ
Study of Multiwalled Graphite Nanotubes and Filaments Formation from Carbonized Products of Polyvinyl Alcohol via Catalytic Graphitization at 600–800°C in Nitrogen Atmosphere
Carbon. 2000. V.38. N7. P.1075-1082. DOI: 10.1016/S0008-6223(99)00225-0 WOS Scopus РИНЦ
Dates:
Submitted: | Mar 18, 1999 |
Accepted: | Sep 20, 1999 |
Published online: | Apr 28, 2000 |
Published print: | Jun 1, 2000 |
Identifiers:
Web of science | WOS:000087261000013 |
Scopus | 2-s2.0-0033742315 |
Elibrary | 13341521 |
Chemical Abstracts | 2000:379699 |
Chemical Abstracts (print) | 133:45605 |
OpenAlex | W2063813024 |