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  Autocatalytic growth of ZnO nanorods from flat Au(111)-supported ZnO films

Pascua, L., Stavale, F., Nilius, N., & Freund, H.-J. (2014). Autocatalytic growth of ZnO nanorods from flat Au(111)-supported ZnO films. Physical Chemistry Chemical Physics, 16(48), 26741-26745. doi:10.1039/c4cp03730h.

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 Creators:
Pascua, Leandro1, Author           
Stavale, Fernando1, 2, Author           
Nilius, Niklas1, 3, Author           
Freund, Hans-Joachim1, Author           
Affiliations:
1Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              
2Centro Brasileiro de Pesquisas Físicas - CBPF/MCTI, Rua Xavier Sigaud 150, Rio de Janeiro, Brazil, ou_persistent22              
3Institut für Physik, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Germany, ou_persistent22              

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 Abstract: Physical vapour deposition of ZnO on an Au(111) support has been investigated as a function of the oxygen chemical potential by means of scanning tunnelling microscopy and luminescence spectroscopy. Whereas a layer-by-layer growth of ZnO is revealed in oxygen excess, formation of oxide nanorods with large height-to-diameter ratio prevails at lower oxygen chemical potentials. We ascribe the formation of 3D nanostructures in the latter case to traces of Au atoms on the surface that promote trapping and dissociation of the incoming oxygen molecules. The Au residuals, acting as catalyst for the oxide formation, are indeed found on top of the ZnO nanorods.

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Language(s): eng - English
 Dates: 2014-08-202014-10-272014-10-272014-12-28
 Publication Status: Issued
 Pages: 5
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1039/c4cp03730h
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Title: Physical Chemistry Chemical Physics
  Abbreviation : Phys. Chem. Chem. Phys.
Source Genre: Journal
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Publ. Info: Cambridge, England : Royal Society of Chemistry
Pages: - Volume / Issue: 16 (48) Sequence Number: - Start / End Page: 26741 - 26745 Identifier: ISSN: 1463-9076
CoNE: https://pure.mpg.de/cone/journals/resource/954925272413_1