Structure and Electrical Conductivity of Nitrogen-Doped Carbon Nanofibers
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Carbon
ISSN: 0008-6223
, E-ISSN: 1873-3891
|
| Output data |
Year: 2009,
Volume: 47,
Number: 8,
Pages: 1922-1929
Pages count
: 8
DOI:
10.1016/j.carbon.2009.02.034
|
| Authors |
Ismagilov Zinfer R.
1
,
Shalagina Anastasia E.
1
,
Podyacheva Olga Yu.
1
,
Ischenko Arkady V.
1
,
Kibis Lidiya S.
1
,
Boronin Andrey I.
1
,
Chesalov Yury A.
1
,
Kochubey Dmitry I.
1
,
Romanenko Anatoly I.
2,3
,
Anikeeva Olga B.
2,3
,
Buryakov Timofey I.
2,3
,
Tkachev Evgeniy N.
2,3
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis SB RAS
|
| 2 |
Nikolaev Institute of Inorganic Chemistry SB RAS
|
| 3 |
Novosibirsk State University
|
|
Funding (4)
|
1
|
Президиум СО РАН
|
88
|
|
2
|
Президиум РАН
|
27.58
|
|
3
|
The Ministry of Education and Science of the Russian Federation
|
2.1.1/410
|
|
4
|
International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union
|
05-1000005-7726
|
The effect of nitrogen concentration in carbon nanofibers (CNFs) on the structural and electrical properties of the carbon material was studied. CNFs with nitrogen concentration varied from 0 to 8.2 wt.% (N-CNFs) with “herringbone” structure were prepared by decomposition of ethylene and ethylene mixture with ammonia over 65Ni–25Cu–10Al2O3 (wt.%) catalyst at 823 K. Detailed investigation of the CNFs and N-CNFs by XPS, FTIR and Raman spectroscopy showed that the nitrogen introduction in carbon material distorts the graphite-like lattice and increases the structure defectiveness. Both effects become more significant as the nitrogen concentration in N-CNFs grows.
The electrical conductivity of N-CNFs with different nitrogen concentrations is caused by the competition of the nanofiber graphite-like structure disordering after introduction of nitrogen atoms and doping of an additional electron into the delocalized π-system of the graphite-like material. As a result, the maximum electrical conductivity among the samples studied was observed at nitrogen concentration in N-CNFs equal to 3.1 wt.%.