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Materials 2015, 8(9), 6346-6359; doi:10.3390/ma8095307

Heteroepitaxy of Cerium Oxide Thin Films on Cu(111)

Department of Surface and Plasma Science, Charles University in Prague, V Holešovičkách 2, 18000 Prague 8, Czech Republic
These authors contributed equally to this work.
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Academic Editor: Jan Ingo Flege
Received: 30 July 2015 / Revised: 12 September 2015 / Accepted: 14 September 2015 / Published: 18 September 2015
(This article belongs to the Special Issue Epitaxial Materials 2015)
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Abstract

An important part of fundamental research in catalysis is based on theoretical and modeling foundations which are closely connected with studies of single-crystalline catalyst surfaces. These so-called model catalysts are often prepared in the form of epitaxial thin films, and characterized using advanced material characterization techniques. This concept provides the fundamental understanding and the knowledge base needed to tailor the design of new heterogeneous catalysts with improved catalytic properties. The present contribution is devoted to development of a model catalyst system of CeO2 (ceria) on the Cu(111) substrate. We propose ways to experimentally characterize and control important parameters of the model catalyst—the coverage of the ceria layer, the influence of the Cu substrate, and the density of surface defects on ceria, particularly the density of step edges and the density and the ordering of the oxygen vacancies. The large spectrum of controlled parameters makes ceria on Cu(111) an interesting alternative to a more common model system ceria on Ru(0001) that has served numerous catalysis studies, mainly as a support for metal clusters. View Full-Text
Keywords: heterogeneous catalysis; monoatomic step; surface oxygen vacancy; oxygen storage capacity; active site; energy conversion and storage; fuel cell; single-atom catalyst heterogeneous catalysis; monoatomic step; surface oxygen vacancy; oxygen storage capacity; active site; energy conversion and storage; fuel cell; single-atom catalyst
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Mysliveček, J.; Matolín, V.; Matolínová, I. Heteroepitaxy of Cerium Oxide Thin Films on Cu(111). Materials 2015, 8, 6346-6359.

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