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

doi:10.1002/celc.201300112

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

Materials Development Division

Research output: Contribution to journal › Article › peer-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 language	English
Article number	CELC201300112
Journal	ChemElectroChem
Volume	1
Issue number	1
DOIs	https://doi.org/10.1002/celc.201300112
Publication status	Published - 2014 Jan 3

Keywords

Alloys
EXAFS
Electrocatalysis
Hydrogen evolution
Surface analysis

ASJC Scopus subject areas

Catalysis
Electrochemistry

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title = "Topologically sensitive surface segregations of Au-Pd alloys in electrocatalytic hydrogen evolution",

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.",

keywords = "Alloys, EXAFS, Electrocatalysis, Hydrogen evolution, Surface analysis",

author = "Maki Okube and Valery Petrykin and Mueller, {Jonathan E.} and Donato Fantauzzi and Petr Krtil and Timo Jacob",

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AU - Okube, Maki

AU - Petrykin, Valery

AU - Mueller, Jonathan E.

AU - Fantauzzi, Donato

AU - Krtil, Petr

AU - Jacob, Timo

PY - 2014/1/3

Y1 - 2014/1/3

N2 - 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.

AB - 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.

KW - Alloys

KW - EXAFS

KW - Electrocatalysis

KW - Hydrogen evolution

KW - Surface analysis

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ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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