INVESTIGADORES
VELEZ Patricio
artículos
Título:
The underpotential deposition that should not be: Cu(1 × 1) on Au(111)
Autor/es:
VÉLEZ, P.; CUESTA, A.; LEIVA, E.P.M.; MACAGNO, V.A.
Revista:
ELECTROCHEMISTRY COMMUNICATIONS
Editorial:
ELSEVIER SCIENCE INC
Referencias:
Lugar: Amsterdam; Año: 2012 vol. 25 p. 54 - 57
ISSN:
1388-2481
Resumen:
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.