Analysis of Cerium–Zirconium Mixed Metal Oxides by X-Ray Photoelectron Spectroscopy

Survey and high-resolution x-ray photoelectron spectra of cerium–zirconium mixed metal oxides prepared by co-precipitation are presented. The spectra were collected using a Mg Kα (1253.6 eV) source operated at 300 W and 15 kV over a binding energy range of 1100–0 eV. The compositions of the mixed metal oxides were confirmed with x-ray fluorescence and Auger electron spectroscopy prior to XPS characterization. The precipitates were formed into 100 μm thick specimens and analyzed in wafer form.