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.

journal_name

Sci Rep

journal_title

Scientific reports

authors

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

doi

10.1038/srep21165

subject

Has Abstract

pub_date

2016-02-16 00:00:00

pages

21165

issn

2045-2322

pii

srep21165

journal_volume

6

pub_type

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