Photoemission and RHEED study of the supported Pt and Au epitaxial alloy clusters

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10192065" target="_blank" >RIV/00216208:11320/13:10192065 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apsusc.2013.06.047" target="_blank" >http://dx.doi.org/10.1016/j.apsusc.2013.06.047</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsusc.2013.06.047" target="_blank" >10.1016/j.apsusc.2013.06.047</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photoemission and RHEED study of the supported Pt and Au epitaxial alloy clusters

Popis výsledku v původním jazyce

In this paper, we investigated formation and structure of gold, platinum and Pt-Au bimetallic clusters on tungsten oxide surface. Crystallographic structure and orientation were investigated by reflection high energy electron diffraction, chemical composition and cluster's electronic state by synchrotron radiation photoelectron spectroscopy. Small amount of Au and Pt was deposited on WO3 (1 1 1) surface prepared by RF plasma oxidation and thermal annealing of (1 1 0) tungsten single crystal surface. Formation of 3D Pt or Au clusters with (1 1 1) epitaxial plane was observed. On the contrary to Au, strong metal substrate interaction between Pt and oxide was found, leading to the encapsulation of Pt clusters. Formation of Au-Pt bimetallic clusters was investigated at the temperature range of 160-870 K. It was found that cluster structure depends on the substrate temperature and order of materials deposition. At the temperatures around 570 K, metals formed bimetallic clusters with core-sh

Název v anglickém jazyce

Photoemission and RHEED study of the supported Pt and Au epitaxial alloy clusters

Popis výsledku anglicky

In this paper, we investigated formation and structure of gold, platinum and Pt-Au bimetallic clusters on tungsten oxide surface. Crystallographic structure and orientation were investigated by reflection high energy electron diffraction, chemical composition and cluster's electronic state by synchrotron radiation photoelectron spectroscopy. Small amount of Au and Pt was deposited on WO3 (1 1 1) surface prepared by RF plasma oxidation and thermal annealing of (1 1 0) tungsten single crystal surface. Formation of 3D Pt or Au clusters with (1 1 1) epitaxial plane was observed. On the contrary to Au, strong metal substrate interaction between Pt and oxide was found, leading to the encapsulation of Pt clusters. Formation of Au-Pt bimetallic clusters was investigated at the temperature range of 160-870 K. It was found that cluster structure depends on the substrate temperature and order of materials deposition. At the temperatures around 570 K, metals formed bimetallic clusters with core-sh

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Applied Surface Science

ISSN

0169-4332

e-ISSN

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Svazek periodika

282

Číslo periodika v rámci svazku

říjen

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

746-756

Kód UT WoS článku

000322314800113

EID výsledku v databázi Scopus

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