Thermal degradation of ragged single-wall carbon nanotubes produced by polymer-assisted ultrasonication

被引：41
|
作者：
Koshio, A
Yudasaka, M
Iijima, S
机构：
[1] NEC Corp Ltd, Nanotubulities Project, JST ICORP, Tsukuba, Ibaraki 3058501, Japan
[2] Meijo Univ, Dept Phys, Tenpaku Ku, Nagoya, Aichi, Japan
[3] NEC Corp, Tsukuba, Ibaraki 3058501, Japan
来源：
CHEMICAL PHYSICS LETTERS | 2001年 / 341卷 / 5-6期
关键词：
D O I：
10.1016/S0009-2614(01)00507-3
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：
As-grown single-wall carbon nanotubes (SWNTs) and a monochlorobenzene (MCB) solution of polymethylmethacrylate (PMMA) were sonicated using an ultrasonic processor. The SWNTs obtained were short and contained many holes and defects; therefore, they were called 'ragged single-wall carbon nanotubes (r-SWNTs)'. The r-SWNTs were degraded at and above 800 degreesC in a vacuum (10(-7) Torr). All the r-SWNTs disappeared after heat-treatment at 1200 degreesC for 1 h. Since thermal degradation was not observed for as-grown SWNTs or for acid-purified SWNTs, we suggest that the holes and defects in the r-SWNTs were formed by oxidation of chemically damaged sites formed during the polymer-assisted ultrasonication. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：461 / 466
页数：6
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