Pulsed laser deposition of bimetallic gold?platinum nanoparticles on cerium oxide and their characterisation by X-ray photoelectron spectroscopy and temperature-programmed desorption of isotopically labelled carbon monoxide
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F13%3A00387258" target="_blank" >RIV/61388955:_____/13:00387258 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1016/j.jcat.2012.11.025" target="_blank" >http://dx.doi.org/10.1016/j.jcat.2012.11.025</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jcat.2012.11.025" target="_blank" >10.1016/j.jcat.2012.11.025</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Pulsed laser deposition of bimetallic gold?platinum nanoparticles on cerium oxide and their characterisation by X-ray photoelectron spectroscopy and temperature-programmed desorption of isotopically labelled carbon monoxide
Popis výsledku v původním jazyce
Bimetallic Au?Pt nanoparticles on cerium oxide supports were prepared using pulsed laser deposition (PLD) at room temperature and investigated using X-ray photoelectron spectroscopy (XPS) and temperature-programmed desorption (TPD) of isotopically labelled carbon monoxide 13C18O. The metal deposition caused a partial reduction of Ce4+ to Ce3+. Two components in the spectra of Au (4f) and Pt (4f) photoelectrons were observed and assigned to the charged and metallic state of metals in the nanodeposits. The abundance of the charged species decreased with an increasing amount of the deposited metals and with thermal treatment of the samples. The adsorption properties of the prepared nanodeposits were examined using repeated adsorption?desorption runs of the labelled 13C18O molecules. Carbon monoxide desorbed as 13C18O with a maximum at temperatures ranging from 420 K to 500 K and as 13C16O containing 16O oxygen exchanged from the supporting oxide at temperatures from 480 to 580 K. The TPD
Název v anglickém jazyce
Pulsed laser deposition of bimetallic gold?platinum nanoparticles on cerium oxide and their characterisation by X-ray photoelectron spectroscopy and temperature-programmed desorption of isotopically labelled carbon monoxide
Popis výsledku anglicky
Bimetallic Au?Pt nanoparticles on cerium oxide supports were prepared using pulsed laser deposition (PLD) at room temperature and investigated using X-ray photoelectron spectroscopy (XPS) and temperature-programmed desorption (TPD) of isotopically labelled carbon monoxide 13C18O. The metal deposition caused a partial reduction of Ce4+ to Ce3+. Two components in the spectra of Au (4f) and Pt (4f) photoelectrons were observed and assigned to the charged and metallic state of metals in the nanodeposits. The abundance of the charged species decreased with an increasing amount of the deposited metals and with thermal treatment of the samples. The adsorption properties of the prepared nanodeposits were examined using repeated adsorption?desorption runs of the labelled 13C18O molecules. Carbon monoxide desorbed as 13C18O with a maximum at temperatures ranging from 420 K to 500 K and as 13C16O containing 16O oxygen exchanged from the supporting oxide at temperatures from 480 to 580 K. The TPD
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
CF - Fyzikální chemie a teoretická chemie
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/GA104%2F08%2F1501" target="_blank" >GA104/08/1501: Příprava, charakterizace a chemické vlastnosti nanoslitin zlata na nosiči.</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2013
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Catalysis
ISSN
0021-9517
e-ISSN
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Svazek periodika
109
Číslo periodika v rámci svazku
MAR 2013
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
10
Strana od-do
109-118
Kód UT WoS článku
000316774900011
EID výsledku v databázi Scopus
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