Intershell spacing changes in MWCNT induced by metal-CNT interactions

被引：15
作者：
Gallego, Jaime [1 ]
Barrault, Joel [2 ]
Batiot-Dupeyrat, Catherine [2 ]
Mondragon, Fanor [1 ]
机构：
[1] Univ Antioquia, Inst Chem, Medellin 1226, Colombia
[2] Univ Poitiers, IC2MP, UMR CNRS 7285, ENSIP, F-86022 Poitiers, France
来源：
MICRON | 2013年 / 44卷
关键词：
Multi-walled carbon nanotubes; Intershell spacing; Metal-CNT interaction; Bamboo-like structure; Onion-like structure; CARBON NANOTUBES; GROWTH;
D O I：
10.1016/j.micron.2012.10.003
中图分类号：
TH742 [显微镜];
学科分类号：
摘要：
The intershell spacing in different regions of a multi-walled carbon nanotube (MWCNT) was determined by analysis of high resolution transmission electron (HR-TEM) micrographs. Three general effects can be pointed out, (1) the regular intershell spacing of a CNT is bigger than that in a graphitic carbon because the curvature generates geometrical and electronic deformations which increase repulsion forces between the graphene sheets, (2) when an extra curvature appears, e.g. at the tip of a closed CNT or in a bamboo-like structure, the intershell spacing is expanded due to the extra repulsion caused by the combination of pentagonal and heptagonal rings imbibed in the hexagonal lattice, and (3) when a metal particle interacts with a CNT, the intershell spacing is compressed due to strong metal-CNT interactions. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：463 / 467
页数：5
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