N-doped double-walled carbon nanotubes synthesized by chemical vapor deposition

被引：82

作者：

Kim, SY

Lee, J

Na, CW

Park, J ^{[1
]}

Seo, K

Kim, B

机构：

[1] Korea Univ, Dept Chem, Jochiwon 339700, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Chem, Taejon 305700, South Korea

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 413卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2005.07.093

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：

High-purity N-doped double-walled carbon nanotubes (DWNTs) were synthesized by chemical vapor deposition, and investigated by synchrotron X-ray photoelectron spectroscopy (XPS). As the photon energy increases, the N content increases up to 3 at.%, indicating that the inner wall contains the higher N content than the outer wall. The graphite-like and pyridine-like N structures exist as about 1:1 ratio. The self-consistent charge-density-functional-based tight-binding calculation shows that the N-doping of the inner wall yields the more stable DWNT than that of the outer wall, which supports the XPS result. (c) 2005 Elsevier B.V. All rights reserved.

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页码：300 / 305

页数：6

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