From ultra-high vacuum to the electrochemical interface: X-ray scattering studies of model electrocatalysts

Christopher A. Lucas; Michael Cormack; Mark E. Gallagher; Alexander Brownrigg; Paul Thompson; Ben Fowler; Yvonne Gründer; Jerome Roy; Vojislav Stamenković; Nenad M. Marković

doi:10.1039/b803523g

From ultra-high vacuum to the electrochemical interface: X-ray scattering studies of model electrocatalysts

Christopher A. Lucas, Michael Cormack, Mark E. Gallagher, Alexander Brownrigg, Paul Thompson, Ben Fowler, Yvonne Gründer, Jerome Roy, Vojislav Stamenković, Nenad M. Marković

Research output: Contribution to journal › Article › peer-review

Abstract

In-situ surface X-ray scattering (SXS) has become a powerful probe of the atomic structure at the metal-electrolyte interface. In this paper we describe an experiment in which a Pt(111) sample is prepared under ultra-high vacuum (UHV) conditions to have a p(2 x 2) oxygen layer adsorbed on the surface. The surface is then studied using SXS under UHV conditions before successive transfer to a bulk water environment and then to the electrochemical environment (0.1 M KOH solution) under an applied electrode potential. The Pt surface structure is examined in detail using crystal truncation rod (CTR) measurements under these different conditions. Finally, some suggestions for future experiments on alloy materials, using the same methodology, are proposed and discussed in relation to previous results. © The Royal Society of Chemistry.

Original language	English
Pages (from-to)	41-58
Number of pages	17
Journal	Faraday Discussions
Volume	140
DOIs	https://doi.org/10.1039/b803523g
Publication status	Published - 2008

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title = "From ultra-high vacuum to the electrochemical interface: X-ray scattering studies of model electrocatalysts",

abstract = "In-situ surface X-ray scattering (SXS) has become a powerful probe of the atomic structure at the metal-electrolyte interface. In this paper we describe an experiment in which a Pt(111) sample is prepared under ultra-high vacuum (UHV) conditions to have a p(2 x 2) oxygen layer adsorbed on the surface. The surface is then studied using SXS under UHV conditions before successive transfer to a bulk water environment and then to the electrochemical environment (0.1 M KOH solution) under an applied electrode potential. The Pt surface structure is examined in detail using crystal truncation rod (CTR) measurements under these different conditions. Finally, some suggestions for future experiments on alloy materials, using the same methodology, are proposed and discussed in relation to previous results. {\textcopyright} The Royal Society of Chemistry.",

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doi = "10.1039/b803523g",

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T1 - From ultra-high vacuum to the electrochemical interface: X-ray scattering studies of model electrocatalysts

AU - Lucas, Christopher A.

AU - Cormack, Michael

AU - Gallagher, Mark E.

AU - Brownrigg, Alexander

AU - Thompson, Paul

AU - Fowler, Ben

AU - Gründer, Yvonne

AU - Roy, Jerome

AU - Stamenković, Vojislav

AU - Marković, Nenad M.

PY - 2008

Y1 - 2008

N2 - In-situ surface X-ray scattering (SXS) has become a powerful probe of the atomic structure at the metal-electrolyte interface. In this paper we describe an experiment in which a Pt(111) sample is prepared under ultra-high vacuum (UHV) conditions to have a p(2 x 2) oxygen layer adsorbed on the surface. The surface is then studied using SXS under UHV conditions before successive transfer to a bulk water environment and then to the electrochemical environment (0.1 M KOH solution) under an applied electrode potential. The Pt surface structure is examined in detail using crystal truncation rod (CTR) measurements under these different conditions. Finally, some suggestions for future experiments on alloy materials, using the same methodology, are proposed and discussed in relation to previous results. © The Royal Society of Chemistry.

AB - In-situ surface X-ray scattering (SXS) has become a powerful probe of the atomic structure at the metal-electrolyte interface. In this paper we describe an experiment in which a Pt(111) sample is prepared under ultra-high vacuum (UHV) conditions to have a p(2 x 2) oxygen layer adsorbed on the surface. The surface is then studied using SXS under UHV conditions before successive transfer to a bulk water environment and then to the electrochemical environment (0.1 M KOH solution) under an applied electrode potential. The Pt surface structure is examined in detail using crystal truncation rod (CTR) measurements under these different conditions. Finally, some suggestions for future experiments on alloy materials, using the same methodology, are proposed and discussed in relation to previous results. © The Royal Society of Chemistry.

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DO - 10.1039/b803523g

M3 - Article

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SN - 1359-6640

VL - 140

SP - 41

EP - 58

JO - Faraday Discussions

JF - Faraday Discussions

ER -

From ultra-high vacuum to the electrochemical interface: X-ray scattering studies of model electrocatalysts

Abstract

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