Atomic-scale view of redox-induced reversible changes to a metal-oxide catalytic surface: VOx/α-Fe2O3(0001)

Chang Yong Kim, Anthony A. Escuadro, Peter C. Stair, Michael J. Bedzyk

Research output: Contribution to journalArticle

16 Citations (Scopus)


X-ray standing wave (XSW) analysis and X-ray photoelectron spectroscopy are used to trace the electronic and atomic-scale structural changes of a supported vanadium oxide system at different stages of its oxidation-reduction cycle. Both the oxidation state and adsorption geometry of the vanadium oxide and its α-Fe2O2(0001) single crystal support show reversible changes through the oxidation-reduction cycle characteristic of catalytic behavior. The 3D V atomic distribution maps, derived from the summation of the XSW measured Fourier components, reveal that the V undergoes adsorption site exchange during the oxidation and reduction cycle.

Original languageEnglish
Pages (from-to)1874-1877
Number of pages4
JournalJournal of Physical Chemistry C
Issue number5
Publication statusPublished - Feb 8 2007


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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