Chiral-Selective Growth of Single-Walled Carbon Nanotubes on Lattice-Mismatched Epitaxial Cobalt Nanoparticles
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© 2013 Nature Publishing Group. This is the accepted version of the following article: He, Maoshuai & Jiang, Hua & Liu, Bilu & Fedotov, Pavel V. & Chernov, Alexander I. & Obraztsova, Elena D. & Cavalca, Filippo & Wagner, Jakob B. & Hansen, Thomas W. & Anoshkin, Ilya V. & Obraztsova, Ekaterina A. & Belkin, Alexey V. & Sairanen, Emma & Nasibulin, Albert G. & Lehtonen, Juha & Kauppinen, Esko I. 2013. Chiral-Selective Growth of Single-Walled Carbon Nanotubes on Lattice-Mismatched Epitaxial Cobalt Nanoparticles. Scientific Reports. Volume 3. 1-7. ISSN 2045-2322 (printed). DOI: 10.1038/srep01460, which has been published in final form at http://www.nature.com/articles/srep01460. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License (http://creativecommons.org/licenses/by-nc-nd/3.0/).
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School of Science |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2013
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Language
en
Pages
1-7
Series
Scientific Reports, Volume 3
Abstract
Controlling chirality in growth of single-walled carbon nanotubes (SWNTs) is important for exploiting their practical applications. For long it has been conceptually conceived that the structural control of SWNTs is potentially achievable by fabricating nanoparticle catalysts with proper structures on crystalline substrates via epitaxial growth techniques. Here, we have accomplished epitaxial formation of monometallic Co nanoparticles with well-defined crystal structure, and its use as a catalyst in the selective growth of SWNTs. Dynamics of Co nanoparticles formation and SWNT growth inside an atomic-resolution environmental transmission electron microscope at a low CO pressure was recorded. We achieved highly preferential growth of semiconducting SWNTs (~90%) with an exceptionally large population of (6, 5) tubes (53%) in an ambient CO atmosphere. Particularly, we also demonstrated high enrichment in (7, 6) and (9, 4) at a low growth temperature. These findings open new perspectives both for structural control of SWNTs and for elucidating the growth mechanisms.Description
Keywords
SWNTs, growth, chirality
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Citation
He, Maoshuai & Jiang, Hua & Liu, Bilu & Fedotov, Pavel V. & Chernov, Alexander I. & Obraztsova, Elena D. & Cavalca, Filippo & Wagner, Jakob B. & Hansen, Thomas W. & Anoshkin, Ilya V. & Obraztsova, Ekaterina A. & Belkin, Alexey V. & Sairanen, Emma & Nasibulin, Albert G. & Lehtonen, Juha & Kauppinen, Esko I. 2013. Chiral-Selective Growth of Single-Walled Carbon Nanotubes on Lattice-Mismatched Epitaxial Cobalt Nanoparticles. Scientific Reports. Volume 3. 1-7. ISSN 2045-2322 (printed). DOI: 10.1038/srep01460