A peculiar property of ceria is the ease to form oxygen vacancies, producing reactive sites or facilitating ionic diffusion. For these reasons ceria promotes catalytic activities for a number of important reactions when it is used as a support for transition metals. In our work we study the temporal evolution of oxygen vacancies formation by time-resolved XANES at Ce K-edge and XRD measurements on CeO2/Pt nanoparticles, successfully monitoring the reaction of CO oxidation.
Investigation of oxygen vacancies in CeO2/Pt system with synchrotron light techniques
BRAGLIA, LUCA;LOMACHENKO, KIRILL;LAMBERTI, Carlo;
2016-01-01
Abstract
A peculiar property of ceria is the ease to form oxygen vacancies, producing reactive sites or facilitating ionic diffusion. For these reasons ceria promotes catalytic activities for a number of important reactions when it is used as a support for transition metals. In our work we study the temporal evolution of oxygen vacancies formation by time-resolved XANES at Ce K-edge and XRD measurements on CeO2/Pt nanoparticles, successfully monitoring the reaction of CO oxidation.
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