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Synthesis and Characterization Ag/CeO2 Nanocomposites

Published online by Cambridge University Press:  01 February 2011

Antonella Glisenti ,
Andrea Frasson ,
Alessandro Galenda ,
Matteo Ferroni ,
Isabella Concina  and
Marta Maria Natile
Antonella Glisenti
Affiliation:
antonella.glisenti@unipd.it, Università degli studi di Padova, Scienze Chimiche, Padova, Italy
Andrea Frasson
Affiliation:
andrea.frasson@unipd.it, Università degli studi di Padova, Scienze Chimiche, PADOVA, PD, Italy
Alessandro Galenda
Affiliation:
alessandro.galenda@unipd.it, Università degli studi di Padova, Scienze Chimiche, PADOVA, PD, Italy
Matteo Ferroni
Affiliation:
matteo.ferroni@ing.unibs.it, Università degli studi di Brescia, Chimica e Fisica, BRESCIA, Italy
Isabella Concina
Affiliation:
isabella.concina@ing.unibs.it, Università degli studi di Brescia, Chimica e Fisica, BRESCIA, Italy
Marta Maria Natile
Affiliation:
martamaria.natile@unipd.it, Università degli studi di Padova, Scienze Chimiche, PADOVA, PD, Italy
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Abstract

Two Ag/CeO2 nanocomposite samples were prepared by deposition-precipitation (Ag/Ce nominal atomic ratio = 0.03 and 0.12). XPS data suggest the possible presence of traces of Ce(III). Beside Ag (0), oxidized silver species are also revealed in the Ag/CeO2 sample with lower metal content. The deposition of metal increases surface hydroxylation and carbonatation. Methanol interacts molecularly and dissociatively with the samples; oxidation products are observed from low temperature and depend on Ag content. Both the samples reveal a high activity in methanol complete oxidation; traces of partial oxidation products are observed in the sample with lower Ag content.

Keywords

Agnanostructureoxidation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1256: Symposium N – Functional Oxide Nanostructures and Heterostructures , 2010 , 1256-N16-31
Copyright
Copyright © Materials Research Society 2010

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