Intershell spacing changes in MWCNT induced by metal-CNT interactions

Jaime Gallego; Joël Barrault; Catherine Batiot-Dupeyrat; Fanor Mondragon

doi:10.1016/j.micron.2012.10.003

Intershell spacing changes in MWCNT induced by metal-CNT interactions

Micron. 2013 Jan:44:463-7. doi: 10.1016/j.micron.2012.10.003. Epub 2012 Oct 13.

Authors

Jaime Gallego¹, Joël Barrault, Catherine Batiot-Dupeyrat, Fanor Mondragon

Affiliation

¹ Institute of Chemistry, University of Antioquia, A.A. 1226 Medellín, Colombia. jaimegallegomarin@yahoo.es

PMID: 23103360
DOI: 10.1016/j.micron.2012.10.003

Abstract

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.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Carbon
Metals / chemistry*
Microscopy, Electron, Transmission
Nanotechnology
Nanotubes, Carbon / chemistry*
Nanotubes, Carbon / ultrastructure*

Substances

Metals
Nanotubes, Carbon
Carbon