Producción Científica Profesorado

Nucleation and growth of cobalt onto different substrates: Part I. Underpotential deposition onto a gold electrode



Mendoza Huizar, Luis Humberto

2002

Nucleation and Growth of Cobalt onto different Substrates. Part I Underpotential Deposition onto a Gold Electrode. L.H Mendoza-Huizar, J Robles, M Palomar-Pardavé. http://dx.doi.org/10.1016/S0022-0728(02)00659-9


Abstract


The formation and stripping of a cobalt adlayer were studied by electrochemical techniques at underpotential conditions, monitoring the deposition/dissolution onto/from a polycrystalline gold electrode. The kinetics of the former process fit a model where adsorption and diffusion-controlled two-dimensional instantaneous nucleation of cobalt occurs simultaneously onto the gold electrode surface. The latter involves a complex mechanism where adsorption/desorption competes with two processes, an instantaneous nucleation and growth of two-dimensional holes under charge transfer control and a progressive one. However, it was found that the relative contribution of the instantaneous nucleation was the most important independently of the applied potential.



Producto de Investigación




Artículos relacionados

Analysis of the experimental pressuretemperature behavior in the isotropicnematic phase transition f...

Nucleation and growth of cobalt onto different substrates: Part I. Underpotential deposition onto a ...

Potentiometric behavior of graphite-epoxy electrochemical transducers towards anions, cations and pH...

Evaluación de Esteroides Aromáticos como Indicadores de Madurez Térmica en Extractos de Roca

Nucleation and growth of cobalt onto different substrates: Part II. The upd-opd transition onto a go...

Hydrogen bond studies in substituted N-(2-hydroxyphenyl)--2-[(4-methylbenzenesulfonyl)amino]acetamid...

A Semiempirical PM6 Study of Some Aminopyrimidine Derivatives and their Interaction with an Iron Sur...

THEORETICAL STUDY ON THE MODIFICATION OF ACTIVE SITES IN GOLD SURFACES MODELED AS FINITE CLUSTERS: I...

Zinc Electrodeposition from Chloride Solutions onto Glassy Carbon Electrode

A theoretical quantum study on the distribution of electrophilic and nucleophilic active sites on th...