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  Highly chiral-selective growth of single-walled carbon nanotubes with a simple monometallic Co catalyst

Fouquet, M., Bayer, B. C., Esconjauregui, S., Blume, R., Warner, J. H., Hofmann, S., et al. (2012). Highly chiral-selective growth of single-walled carbon nanotubes with a simple monometallic Co catalyst. Physical Review B, 85(23): 235411. doi:10.1103/PhysRevB.85.235411.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-D2C0-B Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-C09C-9
Genre: Journal Article

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 Creators:
Fouquet, Martin1, Author
Bayer, Bernhard C.1, Author
Esconjauregui, Santiago1, Author
Blume, Raoul2, Author           
Warner, J. H.3, Author
Hofmann, Stephan1, Author
Schlögl, Robert4, Author           
Thomsen, C.5, Author
Robertson, John1, Author
Affiliations:
1Department of Engineering, University of Cambridge, Cambridge CB3 0FA, United Kingdom, ou_persistent22              
2Helmholtz-Zentrum Berlin for Materials and Energy, ou_24023              
3Department of Materials, University of Oxford, Oxford OX1 3PH, United Kingdom, ou_persistent22              
4Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
5Institut für Festkörperphysik, Technische Universität Berlin, 10623 Berlin, Germany, ou_persistent22              

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 Abstract: We report on the growth of single-walled carbon nanotubes from a monometallic Co catalyst on an oxidized Si wafer support by the most simple growth recipe (vacuum annealing, growth by undiluted C2H2). Nevertheless, multiwavelength Raman spectroscopy and transmission electron spectroscopy show a remarkable selectivity for chiral indices and thus, e.g., high abundance with a single chirality representing 58% of all semiconducting tubes. In situ x-ray photoelectron spectroscopy monitors the catalyst chemistry during carbon nanotube growth and shows interfacial Co-Si interactions that may help to stabilize the nanoparticle/nanotube diameter. We outline a two-mechanism model explaining the selective growth.

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Language(s): eng - English
 Dates: 2012-05-242012-02-242012-06-062012-06-06
 Publication Status: Issued
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevB.85.235411
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Title: Physical Review B
Source Genre: Journal
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Publ. Info: Woodbury, NY : Published by the American Physical Society through the American Institute of Physics
Pages: 7 Volume / Issue: 85 (23) Sequence Number: 235411 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008