Abstract—
Density-functional calculations are used to study the structural and electronic properties of stoichiometric and imperfect In2O3 (011) surfaces. We calculate energies of formation of neutral oxygen vacancies on the surface of an indium oxide nanocrystal and analyze the adsorption of an oxygen atom in its ground (triplet) state on a model imperfect surface having O4 vacancies in different charge states. The results indicate that adsorption on a \(V_{{\text{O}}}^{{2 + }}\) vacancy is the most energetically favorable and that the oxygen atom involved switches from a triplet state to a singlet one. We consider oxygen molecule adsorption from different initial geometric configurations on neutral O1–6 vacancies.
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ACKNOWLEDGMENTS
We are grateful to our colleagues at the Joint Supercomputer Center, Russian Academy of Sciences, for providing us with necessary computational resources.
Funding
This work was supported by the Russian Federation Ministry of Science and Higher Education (state research target no. 0082-2018-0003 for the Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, theme no. 45.22: Fundamental Principles behind the Development of a New Generation of Nanostructured Systems with Unique Performance Parameters, state registration no. AAAA-A18-118012390045-2) and the Russian Foundation for Basic Research (grant nos. 19-37-90016 and 19-07-00141a).
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Kurmangaleev, K.S., Mikhailova, T.Y. & Trakhtenberg, L.I. Oxygen Chemisorption on the Surface of an In2O3 (011) Nanocrystal. Inorg Mater 56, 1138–1146 (2020). https://doi.org/10.1134/S0020168520110060
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DOI: https://doi.org/10.1134/S0020168520110060