Topologically sensitive surface segregations of Au-Pd alloys in electrocatalytic hydrogen evolution

Maki Okube, Valery Petrykin, Jonathan E. Mueller, Donato Fantauzzi, Petr Krtil, Timo Jacob

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Density functional calculations along with in situ X-ray absorption spectroscopy data show that AuPd alloys form unique potential- controlled surface structures during the hydrogen evolution. We find evidence for surface segregations preferring a gold surface if the surface is free of chemisorbed species, while hydrogen adsorption triggers palladium segregation into the surface.

Original languageEnglish
Article numberCELC201300112
JournalChemElectroChem
Volume1
Issue number1
DOIs
Publication statusPublished - 2014 Jan 3

Keywords

  • Alloys
  • EXAFS
  • Electrocatalysis
  • Hydrogen evolution
  • Surface analysis

ASJC Scopus subject areas

  • Catalysis
  • Electrochemistry

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