The underpotential deposition that should not be: Cu(1x1) on Au(111)

Patricio Velez, Angel Cuesta, Ezequiel P M Leiva, Vicente A Macagno

Research output: Contribution to journalArticle

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Abstract

Underpotential deposition of copper on Au(111) is analyzed in the light of first-principles calculations. The existence of a 1 × 1 Cu monolayer on Au(111) at underpotentials can be only understood taking into account the free energy excess delivered by the adsorption of sulfate anions. While a naked copper pseudomorphic monolayer results thermodynamically less stable than bulk copper, accounting for the interaction with sulfate ions delivers an underpotential shift which is comparable with the experimental value.
Original languageEnglish
Pages (from-to)54-57
Number of pages4
JournalElectrochemistry Communications
Volume25
Early online date21 Sep 2012
DOIs
Publication statusPublished - Nov 2012

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