INIFTA 05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Gold oxide films grown in the confined aqueous layer between gold and organic solvents
Autor/es:
L. M. GASSA ; J. O. ZERBINO; ARIEL G. MEYRA; M. G. SUSTERIC; S. SIBONI; C. DELLA VOLPE
Revista:
JOURNAL OF ELECTROANALYTICAL CHEMISTRY - (Print)
Editorial:
ELSEVIER SCIENCE SA
Referencias:
Lugar: Amsterdam; Año: 2014 p. 1 - 6
ISSN:
1572-6657
Resumen:
The properties of anodic passive films potentiostatically formed on polycrystalline gold in aqueous phosphatesolutions were studied using voltammetry, electrochemical impedance spectroscopy, and contact anglemeasurements. The nature of the gold oxide layer was analyzed as a function of a potential holding in theaqueous double layer charge region at the interface between gold and the aqueous layer confined by insolubleorganic solvents (hexane, chloroform, anisole, butyl acetate, xylene, and isopropyl ether). Different growthconditions change the homogeneity of the oxide layer leading to different passive properties. A synergeticeffect on the gold oxidation of hydrogen dissolved in the confined aqueous layer is noted.
