Nitrogen-Doped Carbon Nanotubes: Growth, Mechanism and Structure

被引：27

作者：

O'Byrne, Justin P. ^{[1
,2
,3
]}

Li, Zhonglai ^{[1
,2
,3
]}

Jones, Sarah L. T. ^{[4
]}

Fleming, Peter G. ^{[1
,2
,3
]}

Larsson, J. Andreas ^{[4
]}

Morris, Michael A. ^{[1
,2
,3
]}

Holmes, Justin D. ^{[1
,2
,3
]}

机构：

[1] Natl Univ Ireland Univ Coll Cork, Dept Chem, Mat Chem & Anal Grp, Cork, Ireland

[2] Natl Univ Ireland Univ Coll Cork, Tyndall Natl Inst, Cork, Ireland

[3] Trinity Coll Dublin, CRANN, Dublin 2, Ireland

[4] Tyndall Natl Inst, Elect Theory Grp, Cork, Ireland

来源：

CHEMPHYSCHEM | 2011年 / 12卷 / 16期

基金：

爱尔兰科学基金会;

关键词：

catalysts; density functional theory; doping; nanotubes; nitrogen; INITIO MOLECULAR-DYNAMICS; AUGMENTED-WAVE METHOD; ELECTRONIC-PROPERTIES; BOND LENGTHS; REDUCTION; PARTICLES; CATALYST; METALS;

D O I：

10.1002/cphc.201100454

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：

Nitrogen-doped bamboo-structured carbon nanotubes have been successfully grown using a series of cobalt/molybdenum catalysts. The morphology and structure of the nanotubes were analysed by transmission electron microscopy and Raman spectroscopy. The level of nitrogen doping, as determined by X-ray photoelectron spectroscopy, was found to range between 0.5 to 2.5 at.?%. The growth of bamboo-structured nanotubes in the presence of nitrogen, in preference to single-walled and multi-walled nanotubes, was due to the greater binding energy of nitrogen for cobalt in the catalyst compared to the binding strength of carbon to cobalt, as determined by density functional theory.

引用

页码：2995 / 3001

页数：7

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