Surface Chemistry of Zirconia Nanopowders Doped with Pr2O3: an XPS Study
Y. Suchorski a, R. Wrobel b, S. Becker b, A. Opalińska c, U. Narkiewicz d, M. Podsiadly d and H. Weiss b
a Institute of Materials Chemistry, Vienna University of Technology, Veterinärplatz 1, A-1210 Vienna, Austria
b Chemisches Institut, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, D-39106 Magdeburg, Germany
c Institute of High Pressure Physics, Polish Academy of Sciences, Sokołowska 29, 01-142 Warsaw, Poland
d Institute of Chemical and Environment Engineering, Szczecin University of Technology, Pułaskiego 10, 70-322 Szczecin, Poland
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Received: 16 05 2008
Zirconia nanopowders of tetragonal crystallographic structure doped with Pr2O3 were prepared by the microwave-assisted hydrothermal synthesis and coprecipitation method. The surface compositions were studied by X-ray photoelectron spectroscopy. The nanopowder particles appear to be inhomogeneous in their structure: for the surface region an enrichment with praseodymium is detected by X-ray photoelectron spectroscopy measurements. This allows the assumption of a core-shell-like structure of single nanopowders particles. The X-ray photoelectron spectroscopy studies confirm also Zr4+ and Pr3+ as main oxidation states of zirconium and praseodymium in the studied compounds.
DOI: 10.12693/APhysPolA.114.S-125
PACS numbers: 79.60.-i, 61.46.-w, 61.46.Hk