Growth kinetics of single-walled carbon nanotubes with a (2n, n) chirality selection

Maoshuai He*, Xiao Wang, Shuchen Zhang, Hua Jiang, Filippo Carlo Cavalca, Hongzhi Cui, Jakob B. Wagner, Thomas W. Hansen, Esko Kauppinen, Jin Zhang, Feng Ding

*Corresponding author for this work

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Abstract

The growth kinetics play key roles in determining the chirality distribution of the grown single-walled carbon nanotubes (SWCNTs). However, the lack of comprehensive understandings on the SWCNT’s growth mechanism at the atomic scale greatly hinders SWCNT chirality-selective synthesis. Here, we establish a general model, where the dislocation theory is a specific case, to describe the etching agent–dependent growth kinetics of SWCNTs on solid catalyst particles. In particular, the growth kinetics of SWCNTs in the absence of etching agent is validated by both in situ environmental transmission electron microscopy and ex situ chemical vapor deposition growth of SWCNTs. On the basis of the new theory of SWCNT’s growth kinetics, we successfully explained the selective growth of (2n, n) SWCNTs. This study provides another degree of freedom for SWCNT controlled synthesis and opens a new strategy to achieve chirality-selective synthesis of (2n, n) SWCNTs using solid catalysts.
Original languageEnglish
Article numbereaav9668
JournalScience Advances
Volume5
Issue number12
Number of pages8
ISSN2375-2548
DOIs
Publication statusPublished - 2019

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