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XPS, UPS, and STM studies of nanostructured CuO films

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Abstract

A Cu1O1.7 oxide film containing a large amout of superstoichiometric oxygen was obtained by low-temperature oxidation of metallic copper in the oxygen plasma. An STM study of the film structure showed that ∼10 nm planar copper oxide nanocrystallites with particles packed parallel to the starting metal surface. In an XPS study, the spectral characteristics of the Cu2p and O1s lines indicated that particles with a CuO lattice formed (E bnd(Cu2p 3/2) = 933.3 eV and a shake-up satellite, E bnd(O1s) = 529.3 eV). The additional superstoichiometric oxygen is localized at the sites of contact of nanoparticles in the interunit space and is characterized by a state with the binding energy E bnd(O1s) = 531.2 eV. Due to the formation of a nanostructure in the films during low-temperature plasma oxidation, the resulting copper oxide has a much lower thermal stability than crystalline oxide CuO.

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Authors and Affiliations

  1. G. K. Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, Novosibirsk, Russia

    A. I. Stadnichenko, A. M. Sorokin & A. I. Boronin

  2. Novosibirsk State University, Novosibirsk, Russia

    A. I. Boronin

Authors
  1. A. I. Stadnichenko
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  2. A. M. Sorokin
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  3. A. I. Boronin
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Correspondence to A. I. Boronin.

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Original Russian Text Copyright © 2008 by A. I. Stadnichenko, A. M. Sorokin, and A. I. Boronin

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Translated from Zhurnal Strukturnoi Khimii, Vol. 49, No. 2, pp. 353–359, March–April, 2008.

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Stadnichenko, A.I., Sorokin, A.M. & Boronin, A.I. XPS, UPS, and STM studies of nanostructured CuO films. J Struct Chem 49, 341–347 (2008). https://doi.org/10.1007/s10947-008-0133-1

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  • DOI: https://doi.org/10.1007/s10947-008-0133-1

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