Bimetallic Nickel-Cobalt Nanosized Layers Supported on Polar ZnO Surfaces: Metal-Support Interaction and Alloy Effects Studied by Synchrotron Radiation X-ray Photoelectron Spectroscopy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10130672" target="_blank" >RIV/00216208:11320/12:10130672 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/12:00437233
Result on the web
<a href="http://dx.doi.org/10.1021/jp301219u" target="_blank" >http://dx.doi.org/10.1021/jp301219u</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/jp301219u" target="_blank" >10.1021/jp301219u</a>

Result language
angličtina
Original language name
Bimetallic Nickel-Cobalt Nanosized Layers Supported on Polar ZnO Surfaces: Metal-Support Interaction and Alloy Effects Studied by Synchrotron Radiation X-ray Photoelectron Spectroscopy
Original language description
The interaction of ultrathin bimetallic Ni-Co layers (0.25 and 1.5 nm) supported on polar (0001)Zn-ZnO and (000 (1) over bar )O-ZnO substrates was investigated by synchrotron-based photoelectron spectroscopy (PES) under ultrahigh vacuum (UHV) and O-2 environments. Monometallic Ni and Co layers were also characterized to highlight the influence of Ni-Co synergetic effects on the metal-support interaction. At room temperature, cobalt is partially oxidized, while nickel is metallic. The effect of ZnO surface termination is minor, while the influence of surface hydroxyl groups is discussed. Annealing at 773 K in UHV promotes oxidation of monometallic Ni and Co layers but has little influence on bimetallic Ni-Co. In addition, significant agglomeration of the Ni-Co overlayer is observed, with a parallel increase in the surface Co concentration. Agglomeration of Ni-Co is more pronounced on O-terminated ZnO. Upon annealing in 1 X 10(-6) mbar of O-2, both Ni and Co readily oxidize and redispers
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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