Structural and electronic studies of supported Pt and Au epitaxial clusters on tungsten oxide surface

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10130579" target="_blank" >RIV/00216208:11320/12:10130579 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.vacuum.2011.07.021" target="_blank" >http://dx.doi.org/10.1016/j.vacuum.2011.07.021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.vacuum.2011.07.021" target="_blank" >10.1016/j.vacuum.2011.07.021</a>

Result language

angličtina

Original language name

Structural and electronic studies of supported Pt and Au epitaxial clusters on tungsten oxide surface

Original language description

In the present paper we investigated the growth and electronic properties of Pt or Au clusters and formation of Pt-Au bimetallic clusters prepared "in-situ" on tungsten oxide surface by physical deposition under vacuum. The epitaxial tungsten oxide thinfilms were prepared by oxidation of W(110) single-crystal surface using a RF oxygen plasma source followed by thermal annealing. The chemical state of the system, the interaction between deposit and substrate and formation of Pt-Al alloy were investigated by photoelectron spectroscopy excited by synchrotron radiation (SRPES) and K;alpha X-ray source (XPS). We found that in contrary to Au clusters the Pt ones strongly interacts with the substrate. Deposition of both Pt and Au on the surface at the substrate temperature of 300 degrees C gave rise to the formation of bimetallic core shell clusters. The detail structure of the bimetallic system depends on the order of deposited metals. These findings can explain some properties of Pt/WOx an

Czech name

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Czech description

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Type

J_x - 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

<a href="/en/project/LC06058" target="_blank" >LC06058: Center of synchrotron radiation materials study</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Vacuum

ISSN

0042-207X

e-ISSN

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Volume of the periodical

86

Issue of the periodical within the volume

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

586-593

UT code for WoS article

000301018400003

EID of the result in the Scopus database

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