Oxidation of Reduced Ceria by Incorporation of Hydrogen

Zhaorui Li; Kristin Werner; Kun Qian; Rui You; Agata Płucienik; Aiping Jia; Liyuan Zhang; Haibin Pan; Helmut Kuhlenbeck; Shamil Shaikhutdinov; Weixin Huang; Hans‐Joachim Freund

doi:10.1002/anie.201907117

journal article Open Access Sep 12, 2019

Oxidation of Reduced Ceria by Incorporation of Hydrogen

Zhaorui Li Kristin Werner

Kun Qian

Rui You

Agata Płucienik Aiping Jia Liyuan Zhang

Haibin Pan Helmut Kuhlenbeck Shamil Shaikhutdinov Weixin Huang

Hans‐Joachim Freund

Angewandte Chemie International Edition Vol. 58 No. 41 pp. 14686-14693 · Wiley

View at Publisher Save 10.1002/anie.201907117

Abstract

AbstractThe 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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196

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References

Details

Published: Sep 12, 2019
Vol/Issue: 58(41)
Pages: 14686-14693
License: View

Authors

Z

Zhaorui Li

Hefei 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

K

Kristin Werner

Fritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Germany

K

Kun Qian

Hefei 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

R

Rui You

Hefei 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

A

Agata Płucienik

Fritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Germany

A

Aiping Jia

Hefei 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; Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical Chemistry Zhejiang Normal University Jinhua 321004 China

L

Liyuan Zhang

Hefei 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

H

Haibin Pan

National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China

H

Helmut Kuhlenbeck

Fritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Germany

S

Shamil Shaikhutdinov

Fritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Germany

W

Weixin Huang

Hefei 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

H

Hans‐Joachim Freund

Fritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Germany

Funding

National Natural Science Foundation of China Award: 21525313, 91745202

Cite This Article

Zhaorui Li, Kristin Werner, Kun Qian, et al. (2019). Oxidation of Reduced Ceria by Incorporation of Hydrogen. Angewandte Chemie International Edition, 58(41), 14686-14693. https://doi.org/10.1002/anie.201907117

Oxidation of Reduced Ceria by Incorporation of Hydrogen

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