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Oxygen adatoms and vacancies on the (110) surface of CeO2

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Abstract

The behavior of oxygen on ceria surfaces is closely related with the applications of ceria as a catalyst and oxygen conductor in solid-oxide fuel cells. Here, the atomic configurations of oxygen adatoms and vacancies on the (110) surface of CeO2 have been studied combining aberration-corrected transmission electron microscopy and first-principles calculations. The oxygen adatoms were estimated to be located on top of Ce atoms with 50% coverage, forming a c(2×2) reconstruction. The oxygen vacancies can form stable configuration, with the Ce atoms partly reduced.

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Authors and Affiliations

  1. National Center for Electron Microscopy in Beijing, Key Laboratory of Advanced Materials of Ministry of Education of China, State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

    JingLu Huang, Jing Zhu & Rong Yu

  2. State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China

    YunBo Yu

  3. Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China

    YunBo Yu

  4. University of Chinese Academy of Sciences, Beijing, 100049, China

    YunBo Yu

Authors
  1. JingLu Huang
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  2. YunBo Yu
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  3. Jing Zhu
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  4. Rong Yu
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Correspondence to Rong Yu.

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Huang, J., Yu, Y., Zhu, J. et al. Oxygen adatoms and vacancies on the (110) surface of CeO2. Sci. China Technol. Sci. 61, 135–139 (2018). https://doi.org/10.1007/s11431-017-9154-9

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  • DOI: https://doi.org/10.1007/s11431-017-9154-9

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