Structure and electrical conductivity of nitrogen-doped carbon nanofibers

被引：364

作者：

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
]}

机构：

[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

[2] Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia

[3] Novosibirsk State Univ, Novosibirsk 630090, Russia

来源：

CARBON | 2009年 / 47卷 / 08期

关键词：

CATALYTIC FILAMENTOUS CARBON; THIN-FILMS; NANOTUBES; GROWTH; DECOMPOSITION; SPECTROSCOPY; PYROLYSIS; NICKEL;

D O I：

10.1016/j.carbon.2009.02.034

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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-10Al(2)O(3) (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 pi-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.% (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1922 / 1929

页数：8

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