Electrodeposition of Cu onto Reconstructed Pt(100) and Pt(110) Surfaces

Zei, Mau-Scheng; Ertl, Gerhard

doi:10.1524/zpch.1997.202.Part_1_2.005

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Electrodeposition of Cu onto Reconstructed Pt(100) and Pt(110) Surfaces

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Zei, Mau-Scheng
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Ertl, Gerhard
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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[21967156 - Zeitschrift für Physikalische Chemie] Electrodeposition of Cu onto Reconstructed Pt(100) and Pt(110) Surfaces.pdf
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Citation

Zei, M.-S., & Ertl, G. (1997). Electrodeposition of Cu onto Reconstructed Pt(100) and Pt(110) Surfaces. Zeitschrift für physikalische Chemie, 202(1-2), 5-19. doi:10.1524/zpch.1997.202.Part_1_2.005.

Cite as: https://hdl.handle.net/21.11116/0000-0007-0D31-4

Abstract

The structural properties of reconstructed Pt(100) and (110) surfaces in H₂S0₄ solution
and after underpotential deposition (UPD) of Cu were investigated by means of LEED, RHEED, Auger electron spectroscopy and voltammetry. Potential cycling between —0.2 and +0.2 V leaves the surface reconstructions unaffected. While with Pt(110) the 1 X 2 surface periodicity survives Cu UPD as well as subsequent stripping, with Pt(100) the surface reconstruction is lifted by Cu UPD. Structural models for Pt(110) covered by 1 and 2 monolayers (ML) of Cu are presented which are consistent with the various experimental observations. Specific adsorption of anions (SO ²₄^- and Br^-) on Cu/Pt(110) causes the formation of ordered overlayers under certain conditions.