Oxidation of Reduced Ceria by Incorporation of Hydrogen.

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ID: 37641
2019
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Abstract
The interaction of hydrogen with reduced ceria (CeO2-x) powders and CeO2-x(111) thin films was studied using several characterization techniques including TEM, XRD, LEED, XPS, RPES, EELS, ESR, and TDS. The results clearly indicate that both in reduced ceria powders as well as in reduced single crystal ceria films hydrogen may form hydroxyls at the surface and hydride species below the surface. The formation of hydrides is clearly linked to the presence of oxygen vacancies and is accompanied by the transfer of an electron from a Ce3+ species to hydrogen, which results in the formation of Ce4+, and thus in oxidation of ceria.
Reference Key
freund2019oxidationangewandte Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Freund, Hans-Joachim;Li, Zhaorui;Werner, Kristin;Qian, Kun;You, Rui;Płucienik, Agata;Jia, Aiping;Wu, Lihui;Zhang, Liyuan;Pan, Haibin;Kuhlenbeck, Helmut;Shaikhutdinov, Shamil;Huang, Weixin;
Journal angewandte chemie (international ed in english)
Year 2019
DOI
10.1002/anie.201907117
URL
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