Catalytically active cobalt-copper-oxide layers on aluminum and titanium

  • I. V. Lukiyanchuk
  • I. V. Chernykh
  • V. S. Rudnev
  • A. Yu. Ustinov
  • L. M. Tyrina
  • P. M. Nedozorov
  • E. E. Dmitrieva
New Substances, Materials, and Coatings


Oxide coatings modified with cobalt and copper oxides are obtained on titanium and aluminum by means of combining plasma electrolytic oxidation (PEO) in silicate and zirconate electrolytes and impregnation in nitrate solutions followed by annealing. The effect of PEO coatings that were preliminarily formed on aluminum and titanium in different electrolytes on the composition and surface morphology of cobaltcopper oxide composites and their activity with respect to CO oxidation is studied. The maximum total concentration of cobalt and copper is found to be typical of composite layers based on SiO2 + Al2O3/Al, while the minimum content is observed in the case of layers based on ZrO2 + TiO2/Ti, the PEO bases being characterized by the highest and lowest water-absorbing capacity, respectively. The effect of PEO coatings on the catalytic activity of cobalt-copper oxide catalysts decreases in the series SiO2 + TiO2/Ti > SiO2 + Al2O3/Al > Ce2O3 + ZrO2 + TiO2/Ti > ZrO2 + TiO2/Ti.


Cobalt Copper Oxide Plasma Electrolytic Oxidation Silicate Coating Plasma Electrolytic Oxidation Coating 
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Copyright information

© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  • I. V. Lukiyanchuk
    • 1
  • I. V. Chernykh
    • 1
  • V. S. Rudnev
    • 1
    • 2
  • A. Yu. Ustinov
    • 1
    • 2
  • L. M. Tyrina
    • 1
  • P. M. Nedozorov
    • 1
  • E. E. Dmitrieva
    • 1
  1. 1.Institute of Chemistry, Far Eastern BranchRussian Academy of SciencesVladivostokRussia
  2. 2.Far Eastern Federal UniversityVladivostokRussia

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