Beam-induced nonuniform shrinkage of single-walled carbon nanotube and passivation effect of metal nanoparticle

Zhu, Xianfang, Li, Lunxiong, Su, Jiangbin and Wang, Lianzhou (2015) Beam-induced nonuniform shrinkage of single-walled carbon nanotube and passivation effect of metal nanoparticle. Journal of Physical Chemistry C, 119 11: 6239-6245. doi:10.1021/jp507537h


Author Zhu, Xianfang
Li, Lunxiong
Su, Jiangbin
Wang, Lianzhou
Title Beam-induced nonuniform shrinkage of single-walled carbon nanotube and passivation effect of metal nanoparticle
Journal name Journal of Physical Chemistry C   Check publisher's open access policy
ISSN 1932-7447
1932-7455
Publication date 2015
Year available 2014
Sub-type Article (original research)
DOI 10.1021/jp507537h
Open Access Status
Volume 119
Issue 11
Start page 6239
End page 6245
Total pages 7
Place of publication Washington, DC, United States
Publisher American Chemical Society
Collection year 2015
Language eng
Abstract Electron-beam-induced nonuniform shrinkage of single-walled carbon nanotube (SWCNT) and the passivation effect of catalyst metal nanoparticle on the shrinkage were reported for the first time. It was found that pristine SWCNT shrank in its axial direction preferentially from the most curved, free cap end of the tube whereas the shrinkage of the tube diameter was almost offset by the axial shrinkage. However, once being attached to Fe nanoparticle, the most curved cap end of SWCNT became intriguingly passivated. As a consequence, the axial shrinkage of the SWCNT was retarded and the shrinkage of the tube diameter was revealed. A new mechanism of atom “diffusion” combined with atom “evaporation” as athermally driven by the nanocurvature of SWCNT and electron beam activation was proposed to elucidate the observed new phenomenon, which is different from the existing knock-on mechanism
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2015 Collection
 
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Created: Tue, 24 Mar 2015, 11:25:17 EST by Professor Lianzhou Wang on behalf of School of Chemical Engineering