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  Oxidation of Reduced Ceria by Incorporation of Hydrogen

Li, Z., Werner, K., Qian, K., You, R., Plucienik, A., Jia, A., et al. (2019). Oxidation of Reduced Ceria by Incorporation of Hydrogen. Angewandte Chemie International Edition, 58(41), 14686-14693. doi:10.1002/anie.201907117.

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Li_et_al-2019-Angewandte_Chemie_International_Edition.pdf (Publisher version), 3MB
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Li_et_al-2019-Angewandte_Chemie_International_Edition.pdf
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 Creators:
Li, Zhaorui1, Author
Werner, Kristin2, Author           
Qian, Kun1, Author
You, Rui1, Author
Plucienik, Agata2, Author           
Jia, Aiping1, 3, Author
Wu, Lihui4, Author
Zhang, Liyuan1, Author
Pan, Haibin4, Author
Kuhlenbeck, Helmut2, Author           
Shaikhutdinov, Shamil K.2, Author           
Huang, Weixin1, Author
Freund, Hans-Joachim2, Author           
Affiliations:
1Hefei National Laboratory for Physical Sciences at Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Hefei 230029, China, ou_persistent22              
2Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              
3Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry Zhejiang Normal University, Jinhua, 321004, China, ou_persistent22              
4National Synchrotron Radiation Laboratory University of Science and Technology of China, Hefei 230029, China, ou_persistent22              

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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.

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Language(s): eng - English
 Dates: 2019-08-122019-10-07
 Publication Status: Published in print
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/anie.201907117
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Title: Angewandte Chemie International Edition
  Abbreviation : Angew. Chem. Int. Ed.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 58 (41) Sequence Number: - Start / End Page: 14686 - 14693 Identifier: ISSN: 0570-0833
CoNE: https://pure.mpg.de/cone/journals/resource/0570-0833