Multi-wall carbon nanotubes with uniform chirality: evidence for scroll structures

被引：61
|
作者：
Ruland, W
Schaper, AK
Hou, H
Greiner, A
机构：
[1] Univ Marburg, Fachbereich Chem, Wissensch Zentrum Mat Forsch, D-35032 Marburg, Germany
[2] Univ Marburg, Facbereich Geowissensch, Wissensch Zentrum Mat Forsch, D-35032 Marburg, Germany
来源：
CARBON | 2003年 / 41卷 / 03期
关键词：
carbon nanotubes; pyrolysis; electron microscopy; electron diffraction; microstructure;
D O I：
10.1016/S0008-6223(02)00342-1
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：
Multi-wall carbon nanotubes (MWCNT) obtained by catalytic decomposition of iron phthalocyanine are investigated by high resolution electron microscopy and electron diffraction (ED). The evaluation of the ED patterns shows that all MWCNTs studied have a uniform chirality, i.e. all tubes of a given MWCNT show the same chiral angle. The conditions for the formation of nested tubes are discussed. A comparison of the values of the chiral angles with those of the corresponding interwall spacings, both obtained from the ED patterns, leads to the conclusion that these MWCNTs have a scroll structure, very probably consisting of one single rolled-up graphene sheet. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：423 / 427
页数：5
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