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Growth of carbon nanotubes from heterometallic palladium and copper catalysts
Department of Chemistry, Tyndall National Institute, University College Cork.
Department of Chemistry, Tyndall National Institute, University College Cork.
Department of Chemistry, Tyndall National Institute, University College Cork.
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2010 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 114, no 18, p. 8115-8119Article in journal (Refereed) Published
Abstract [en]

Bamboo-structured carbon nanotubes (BCNTs) were synthesized with MgO-supported Pd and Cu catalysts, doped with either Mo or W, by the catalytic chemical vapor decomposition of methane. No nanotubes were observed to grow from the catalysts in the absence of the dopant metals. Additionally, the level of dopant in the catalysts was found to strongly affect the morphology of carbon produced. Amorphous carbon was generated on a 10 wt % Cu/5 wt % W (2:1) catalyst, while BCNTs were produced on 20 wt % Cu/5 wt % W (4:1) and a 30 wt % Cu/5 wt % W (6:1) catalysts. A pure Pd catalyst produced carbon nanofibres (CNFs), while BCNTs were able to grow from Pd/Mo catalysts. Density functional theory simulations show that the composite Cu/W and Pd/Mo bimetallic particles which generated BCNTs have similar binding energies to carbon, and comparable to metals such as Fe, Co, and Ni which are traditionally used to grow CNTs by chemical vapor deposition

Place, publisher, year, edition, pages
2010. Vol. 114, no 18, p. 8115-8119
Identifiers
URN: urn:nbn:se:ltu:diva-16095DOI: 10.1021/jp909309tISI: 000277280800001Scopus ID: 2-s2.0-77952018445Local ID: fad3a657-6266-4045-856a-b664596d742fOAI: oai:DiVA.org:ltu-16095DiVA, id: diva2:989071
Note

Uppr├Ąttat; 2010; 20130225 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2023-09-05Bibliographically approved

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