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Ding, Feng
IBS - Center for Multidimensional Carbon Materials (CMCM)
Research Interests
  • Theoretical methods development for materials studies.
  • The formation mechanism of various carbon materials, from fullerene to carbon nanotube and graphene.
  • Kinetics and thermodynamics of materials growth and etching.
  • The structure, properties and fundamentals of nanomaterials.
  • The experimental synthesis of carbon nanotubes.

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

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Title
Growth kinetics of single-walled carbon nanotubes with a (2n, n) chirality selection
Author
He, MaoshuaiWang, XiaoZhang, ShuchenJiang, HuaCavalca, FilippoCui, HongzhiWagner, Jakob B.Hansen, Thomas W.Kauppinen, EskoZhang, JinDing, Feng
Issue Date
2019-12
Publisher
American Association for the Advancement of Science
Citation
SCIENCE ADVANCES, v.5, no.12, pp.eaav9668
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.
URI
https://scholarworks.unist.ac.kr/handle/201301/30646
URL
https://advances.sciencemag.org/content/5/12/eaav9668
DOI
10.1126/sciadv.aav9668
ISSN
2375-2548
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