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  CO oxidation over ZnO films on Pt(1 1 1) at near-atmospheric pressures

Martynova, Y., Liu, B., McBriarty, M., Groot, I., Bedzyk, M., Shaikhutdinov, S. K., et al. (2013). CO oxidation over ZnO films on Pt(1 1 1) at near-atmospheric pressures. Journal of Catalysis, 301, 227-232. doi:10.1016/j.jcat.2013.02.018.

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 Creators:
Martynova, Yulia1, Author           
Liu, BoHong1, Author           
McBriarty, Martin1, Author           
Groot, Irene1, Author           
Bedzyk, M.J.2, Author
Shaikhutdinov, Shamil K.1, Author           
Freund, Hans-Joachim1, Author           
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1Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              
2Department of Materials Science and Engineering, Northwestern University, United States, ou_persistent22              

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 Abstract: Well-ordered ultrathin ZnO(0 0 0 1) films were grown on Pt(1 1 1) in a layer-by-layer mode. The reactivity of the films as a function of the film thickness and coverage was examined by the CO oxidation reaction at near-atmospheric pressures. At low temperatures (∼450 K), CO2 production is found to be much higher on the films of partial coverage than on dense ZnO(0 0 0 1) films and bare Pt(1 1 1). Under reaction conditions, monolayer islands and an entire monolayer film transform into two-monolayers-thick islands, which dominate the surface of the active catalysts. The results provide an adequate structural model for elucidating the reaction mechanism on the oxide/metal boundary at technologically relevant conditions.

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Language(s): eng - English
 Dates: 2013-03-262013-05
 Publication Status: Published in print
 Pages: 6
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.jcat.2013.02.018
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Title: Journal of Catalysis
Source Genre: Journal
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Publ. Info: San Diego, CA. : Academic Press
Pages: - Volume / Issue: 301 Sequence Number: - Start / End Page: 227 - 232 Identifier: ISSN: 0021-9517
CoNE: https://pure.mpg.de/cone/journals/resource/954922645027