Redox properties of water on the oxidized and reduced surfaces of CeO2 (111)
MA Henderson, CL Perkins, MH Engelhard… - Surface Science, 2003 - Elsevier
We present X-ray photoelectron spectroscopy (XPS) and temperature programmed
desorption (TPD) results probing the surface chemistry of water on the oxidized and reduced
surfaces of a 500 Å epitaxial CeO2 (111) film grown on yttria-stabilized ZrO2 (111).
Oxidation with O2 at 773 K under UHV conditions was sufficient to generate XPS spectra
reflective of fully oxidized CeO2 (111). Surface reduction was carried out by annealing in
UHV between 773 and 973 K, and the level of reduction was quantified using changes in the …
desorption (TPD) results probing the surface chemistry of water on the oxidized and reduced
surfaces of a 500 Å epitaxial CeO2 (111) film grown on yttria-stabilized ZrO2 (111).
Oxidation with O2 at 773 K under UHV conditions was sufficient to generate XPS spectra
reflective of fully oxidized CeO2 (111). Surface reduction was carried out by annealing in
UHV between 773 and 973 K, and the level of reduction was quantified using changes in the …
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