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A perfectly stoichiometric and flat CeO2(111) surface on a bulk-like ceria film.

ABSTRACT: In surface science and model catalysis, cerium oxide (ceria) is mostly grown as an ultra-thin film on a metal substrate in the ultra-high vacuum to understand fundamental mechanisms involved in diverse surface chemistry processes. However, such ultra-thin films do not have the contribution of a bulk ceria underneath, which is currently discussed to have a high impact on in particular surface redox processes. Here, we present a fully oxidized ceria thick film (180?nm) with a perfectly stoichiometric CeO2(111) surface exhibiting exceptionally large, atomically flat terraces. The film is well-suited for ceria model studies as well as a perfect substitute for CeO2 bulk material.

SUBMITTER: Barth C

PROVIDER: S-EPMC4754737 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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A perfectly stoichiometric and flat CeO2(111) surface on a bulk-like ceria film.

Barth C C Laffon C C Olbrich R R Ranguis A A Parent Ph P Reichling M M

Scientific reports 20160216

In surface science and model catalysis, cerium oxide (ceria) is mostly grown as an ultra-thin film on a metal substrate in the ultra-high vacuum to understand fundamental mechanisms involved in diverse surface chemistry processes. However, such ultra-thin films do not have the contribution of a bulk ceria underneath, which is currently discussed to have a high impact on in particular surface redox processes. Here, we present a fully oxidized ceria thick film (180 nm) with a perfectly stoichiomet ...[more]

PMID: 26879800

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