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  Coupling of morphological instability and kinetic instability: Chemical waves in hydrogen oxidation on a bimetallic Ni/Rh(111) surface

Homann, M., von Boehn, B., Prieto, M., Gottlob, D. M., Tanase, L. C., Schmidt, T., et al. (2021). Coupling of morphological instability and kinetic instability: Chemical waves in hydrogen oxidation on a bimetallic Ni/Rh(111) surface. Physical Review Materials, 5(4): 045002. doi:10.1103/PhysRevMaterials.5.045002.

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PhysRevMaterials.5.045002.pdf (Publisher version), 2MB
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2021
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 Creators:
Homann, Mathias1, Author
von Boehn, Bernhard1, Author
Prieto, Mauricio2, 3, Author              
Gottlob, Daniel M.2, Author              
Tanase, Liviu Cristian2, 3, Author              
Schmidt, Thomas2, 3, Author              
Genuzio, Francesca4, Author
Menteş, Tevfik O.4, Author
Locatelli, Andrea4, Author
Imbihl, Ronald1, Author
Affiliations:
1Institut für Physikalische Chemie und Elektrochemie, Leibniz-Universität Hannover, Callinstrasse 3A, D-30167 Hannover, Germany, ou_persistent22              
2Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              
3Interface Science, Fritz Haber Institute, Max Planck Society, ou_2461712              
4Elettra - Sincrotrone Trieste, S.C.p.A., S.S. 14, km 163.5 in AREA Science Park, 34149 Basovizza, Trieste, Italy, ou_persistent22              

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 Abstract: The oxidation and reduction of a bimetallic Ni/Rh model catalyst during the water forming O2+H2 reaction is studied with low-energy electron microscopy, microspot-low-energy electron diffraction, and x-ray photoemission electron microscopy. Oxidation of a submonolayer Ni film results in the formation of three-dimensional (3D) NiO nanoparticles. Reduction of 3D-NiO in H2 produces a dispersed two-dimensional film of metallic Ni. Chemical waves during the O2+H2 reaction involve a cyclic transformation between 3D-NiO and 2D-NiO.

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Language(s): eng - English
 Dates: 2020-01-212021-03-172021-04-02
 Publication Status: Published online
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevMaterials.5.045002
 Degree: -

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Title: Physical Review Materials
  Abbreviation : Phys. Rev. Mat.
Source Genre: Journal
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Publ. Info: College Park, MD : American Physical Society
Pages: 5 Volume / Issue: 5 (4) Sequence Number: 045002 Start / End Page: - Identifier: ISSN: 2475-9953
CoNE: https://pure.mpg.de/cone/journals/resource/2475-9953