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  Is Nanostructuring Sufficient To Get Catalytically Active Au?

Klyushin, A., Greiner, M., Huang, X., Lunkenbein, T., Li, X., Timpe, O., et al. (2016). Is Nanostructuring Sufficient To Get Catalytically Active Au? ACS Catalysis, 6(5), 3372-3380. doi:10.1021/acscatal.5b02631.

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 Creators:
Klyushin, Alexander1, 2, Author              
Greiner, Mark1, Author              
Huang, Xing1, Author              
Lunkenbein, Thomas1, Author              
Li, Xuan1, Author              
Timpe, Olaf1, Author              
Friedrich, Matthias1, Author              
Hävecker, Michael3, Author
Knop-Gericke, Axel1, Author              
Schlögl, Robert1, 2, 3, Author              
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
2Division of Energy Materials, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Strasse 15, 12489 Berlin, Germany, ou_persistent22              
3Department of Heterogeneous Reactions, Max-Planck-Institut für Chemische Energiekonversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany, ou_persistent22              

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 Abstract: Gold nanoparticles on transition-metal oxides were synthesized by two different methods: precipitation and photoinduced decomposition of an intermediate gold–azido complex. Only samples prepared by the precipitation method showed significant CO conversion at low temperature. XPS shows the formation of two Au species (Au0 and Auδ+) on the surface of active Au/TiO2 and Au/Fe2O3 samples. The energy shift of the Auδ+ peak depends on the support and is 0.6 and 0.9 eV for Au/TiO2 and Au/Fe2O3, respectively. TEM images indicate the formation of overlayer on Au particles. These results prove Au activation via a strong metal–support interaction, on the basis of the strong influence of the support on the electronic structure of the gold through charge transfer and stabilization of low-coordinated Au atoms.

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 Dates: 2016-04-082015-11-202016-05-06
 Publication Status: Published online
 Pages: 9
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acscatal.5b02631
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Title: ACS Catalysis
  Abbreviation : ACS Catal.
Source Genre: Journal
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Publ. Info: Washington, DC : ACS
Pages: 9 Volume / Issue: 6 (5) Sequence Number: - Start / End Page: 3372 - 3380 Identifier: Other: 2155-5435
CoNE: https://pure.mpg.de/cone/journals/resource/2155-5435