Atomic-Scale Structure of Chemically Distinct Surface Oxygens in Redox Reactions

Anusheela Das, Haesun Park, Yanna Chen, Devika Choudhury, Tien Lin Lee, Jeffrey W. Elam, Peter Zapol, Michael J. Bedzyk*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

During redox reactions, oxide-supported catalytic systems undergo structural and chemical changes. Improving subsequent catalytic properties requires an understanding of the atomic-scale structure with chemical state specificity under reaction conditions. For the case of 1/2 monolayer vanadia on α-TiO2(110), we use X-ray standing wave (XSW) excited X-ray photoelectron spectroscopy to follow the redox induced atomic positional and chemical state changes of this interface. While the resulting XSW 3D composite atomic maps include the Ti and O substrate atoms and V surface atoms, our focus in this report is on the previously unseen surface oxygen species with comparison to density functional theory predictions.

Original languageEnglish (US)
Pages (from-to)17937-17941
Number of pages5
JournalJournal of the American Chemical Society
Volume143
Issue number43
DOIs
StatePublished - Nov 3 2021

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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