In situ formation of surface and bulk oxides in small palladium nanoparticles

Evolution of surface and bulk palladium oxides in supported palladium nanoparticles was followed in situ using X-ray absorption spectroscopy. The surface oxide was found to be easily reducible in hydrogen at room temperature, while removal of bulk oxide required heating in hydrogen above 100 °C. We...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2020-11, Vol.56 (86), p.13097-13100
Main Authors: Bugaev, Aram L., Zabilskiy, Maxim, Skorynina, Alina A., Usoltsev, Oleg A., Soldatov, Alexander V., van Bokhoven, Jeroen A.
Format: Article
Language:English
Subjects:
Nanoparticles
Oxidation
Palladium
Room temperature
X ray absorption
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Summary:Evolution of surface and bulk palladium oxides in supported palladium nanoparticles was followed in situ using X-ray absorption spectroscopy. The surface oxide was found to be easily reducible in hydrogen at room temperature, while removal of bulk oxide required heating in hydrogen above 100 °C. We also found that the co-presence of hydrogen and oxygen favours a stronger oxidation of palladium particles compared to pure oxygen.
ISSN:1359-7345
1364-548X
DOI:10.1039/d0cc05050d