Role of surface iron in enhanced activity for the oxygen reduction reaction on a Pd3Fe(111) single-crystal alloy

Xiaofang Yang, Jun Hu, Jie Fu, Ruqian Wu, Bruce E. Koel

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

Working together: Pd0.9Fe0.1-Pd3Fe(111) (see picture, Pd adatoms yellow, Fe purple, Pd blue-green, O red, H white) displays enhanced performance for the oxygen reduction reaction with five to eight times higher activity than Pd(111). The high catalytic activity may originate from a cooperative effect of a segregated Pd layer with its large tendency to remove surface O species by protonation and active Fe with its ability to dissociate O2.

Original languageEnglish (US)
Pages (from-to)10182-10185
Number of pages4
JournalAngewandte Chemie - International Edition
Volume50
Issue number43
DOIs
StatePublished - Oct 17 2011

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Keywords

  • alloys
  • density functional calculations
  • electrocatalysis
  • oxygen reduction reaction
  • surface chemistry

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