Thermal stability and structural changes of double-walled carbon nanotubes by heat treatment

被引：208

作者：

Kim, YA

Muramatsu, H

Hayashi, T

Endo, M

Terrones, M

Dresselhaus, MS

机构：

[1] Shinshu Univ, Fac Engn, Dept Elect & Elect Engn, Nagano 3808553, Japan

[2] IPICYT, Dept Adv Mat, San Luis Potosi 78210, Mexico

[3] MIT, Cambridge, MA 02139 USA

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 398卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2004.09.024

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：

We describe, for the first time, the sequential structural changes of bundles of double-walled carbon nanotubes (DWNTs) as a function of heat treatment temperature. DWNTs (inner diameters >0.9 nm) are structurally stable up to 2000 degreesC. Above 2100 degreesC, the outer walls of adjacent DWNTs start coalescing into large diameter tubes. At temperatures higher than 2100 degreesC, three different types of structures were observed: (a) large-diameter DWNTs; (b) multi-walled carbon nanotubes (MWNTs), and (c) flaky carbons. The results demonstrate that DWNTs are much more stable than SWNTs, and their stability is comparable to that of MWNTs. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：87 / 92

页数：6

共 27 条

[1] Purification and structural annealing of multiwalled carbon nanotubes at graphitization temperatures [J].