Preparation of thin film Cu-Pt(1 1 1) near-surface alloys: One small step towards up-scaling model single crystal surfaces

John B. Henry; Artjom Maljusch; Jakub Tymoczko; Wolfgang Schuhmann; Aliaksandr S. Bandarenka

doi:10.1016/j.electacta.2012.11.139

Preparation of thin film Cu-Pt(1 1 1) near-surface alloys: One small step towards up-scaling model single crystal surfaces

John B. Henry, Artjom Maljusch, Jakub Tymoczko, Wolfgang Schuhmann, Aliaksandr S. Bandarenka

Max-Planck-lnstitut für Kohlenforschung

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

8 Scopus citations

Abstract

A method for the preparation of Pt(1 1 1) like thin films and thin film Cu-Pt(1 1 1) near-surface alloys (where Cu is preferentially located in the subsurface region) is reported in detail. Cyclic voltammograms of the resultant Pt(1 1 1)-like thin films in 0.1 M HClO₄ demonstrate characteristic "butterfly" peaks attributed to the disorder/order phase transition in the adsorbed*OH layer, typical for a large Pt(1 1 1) crystals. Modification of the film surface with a monolayer of Cu and subsequent annealing in a reducing Ar/H₂(5%) atmosphere, the voltammograms resemble those obtained for Cu-Pt(1 1 1) near-surface alloys prepared on commercial bulk single crystals. This method shows promise for the fabrication of extended (1 1 1)-type alloy surfaces of Pt and its alloys and can additionally be used to up-scale model objects for wider industrial and laboratory applications.

Original language	English
Pages (from-to)	887-893
Number of pages	7
Journal	Electrochimica Acta
Volume	112
DOIs	https://doi.org/10.1016/j.electacta.2012.11.139
State	Published - 1 Dec 2013
Externally published	Yes

Keywords

Cu-Pt alloys
Near-surface alloys
Pt(1 1 1)
Thin films

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10.1016/j.electacta.2012.11.139

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@article{37093f5cb7024278b898ae29cf8b0cd9,

title = "Preparation of thin film Cu-Pt(1 1 1) near-surface alloys: One small step towards up-scaling model single crystal surfaces",

abstract = "A method for the preparation of Pt(1 1 1) like thin films and thin film Cu-Pt(1 1 1) near-surface alloys (where Cu is preferentially located in the subsurface region) is reported in detail. Cyclic voltammograms of the resultant Pt(1 1 1)-like thin films in 0.1 M HClO4 demonstrate characteristic {"}butterfly{"} peaks attributed to the disorder/order phase transition in the adsorbed*OH layer, typical for a large Pt(1 1 1) crystals. Modification of the film surface with a monolayer of Cu and subsequent annealing in a reducing Ar/H2(5%) atmosphere, the voltammograms resemble those obtained for Cu-Pt(1 1 1) near-surface alloys prepared on commercial bulk single crystals. This method shows promise for the fabrication of extended (1 1 1)-type alloy surfaces of Pt and its alloys and can additionally be used to up-scale model objects for wider industrial and laboratory applications.",

keywords = "Cu-Pt alloys, Near-surface alloys, Pt(1 1 1), Thin films",

author = "Henry, {John B.} and Artjom Maljusch and Jakub Tymoczko and Wolfgang Schuhmann and Bandarenka, {Aliaksandr S.}",

note = "Funding Information: Financial support by the EU and the state NRW in the framework of the High Tech. NRW program is gratefully acknowledged. A.S.B. additionally acknowledge financial support in the framework of Helmholtz-Energie-Allianz “Station{\"a}re elektrochemische Speicher und Wandler” (Vertragsnr.: HA-E-0002 ) and the Cluster of Excellence RESOLV ( DFG EXC-1069 ). The authors are thankful to Dr. Dominik Sch{\"a}fer and Mr. Kirill Sliozberg (Ruhr-Universitat Bochum) for the acquisition of SEM-pictures and photographs of the samples.",

year = "2013",

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doi = "10.1016/j.electacta.2012.11.139",

language = "English",

volume = "112",

pages = "887--893",

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T1 - Preparation of thin film Cu-Pt(1 1 1) near-surface alloys

T2 - One small step towards up-scaling model single crystal surfaces

AU - Henry, John B.

AU - Maljusch, Artjom

AU - Tymoczko, Jakub

AU - Schuhmann, Wolfgang

AU - Bandarenka, Aliaksandr S.

N1 - Funding Information: Financial support by the EU and the state NRW in the framework of the High Tech. NRW program is gratefully acknowledged. A.S.B. additionally acknowledge financial support in the framework of Helmholtz-Energie-Allianz “Stationäre elektrochemische Speicher und Wandler” (Vertragsnr.: HA-E-0002 ) and the Cluster of Excellence RESOLV ( DFG EXC-1069 ). The authors are thankful to Dr. Dominik Schäfer and Mr. Kirill Sliozberg (Ruhr-Universitat Bochum) for the acquisition of SEM-pictures and photographs of the samples.

PY - 2013/12/1

Y1 - 2013/12/1

N2 - A method for the preparation of Pt(1 1 1) like thin films and thin film Cu-Pt(1 1 1) near-surface alloys (where Cu is preferentially located in the subsurface region) is reported in detail. Cyclic voltammograms of the resultant Pt(1 1 1)-like thin films in 0.1 M HClO4 demonstrate characteristic "butterfly" peaks attributed to the disorder/order phase transition in the adsorbed*OH layer, typical for a large Pt(1 1 1) crystals. Modification of the film surface with a monolayer of Cu and subsequent annealing in a reducing Ar/H2(5%) atmosphere, the voltammograms resemble those obtained for Cu-Pt(1 1 1) near-surface alloys prepared on commercial bulk single crystals. This method shows promise for the fabrication of extended (1 1 1)-type alloy surfaces of Pt and its alloys and can additionally be used to up-scale model objects for wider industrial and laboratory applications.

AB - A method for the preparation of Pt(1 1 1) like thin films and thin film Cu-Pt(1 1 1) near-surface alloys (where Cu is preferentially located in the subsurface region) is reported in detail. Cyclic voltammograms of the resultant Pt(1 1 1)-like thin films in 0.1 M HClO4 demonstrate characteristic "butterfly" peaks attributed to the disorder/order phase transition in the adsorbed*OH layer, typical for a large Pt(1 1 1) crystals. Modification of the film surface with a monolayer of Cu and subsequent annealing in a reducing Ar/H2(5%) atmosphere, the voltammograms resemble those obtained for Cu-Pt(1 1 1) near-surface alloys prepared on commercial bulk single crystals. This method shows promise for the fabrication of extended (1 1 1)-type alloy surfaces of Pt and its alloys and can additionally be used to up-scale model objects for wider industrial and laboratory applications.

KW - Cu-Pt alloys

KW - Near-surface alloys

KW - Pt(1 1 1)

KW - Thin films

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JO - Electrochimica Acta

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ER -

Preparation of thin film Cu-Pt(1 1 1) near-surface alloys: One small step towards up-scaling model single crystal surfaces

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Keywords

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