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

Characterization of Main Anthocyanins Extracted from Pericarp Blue Corn by MALDI-ToF MS

Electrochemical kinetic study about cobalt electrodeposition onto GCE and HOPG substrates from sulfa...

Underpotential deposition of cobalt onto polycrystalline platinum

Magnetic transition phase diagram of cobalt clusters electrodeposited on HOPG: Experimental and micr...

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

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

Influence of the Crystallinity of the Substrate on Kinetic Parameters of Zinc Electrodeposition Proc...

Nucleation and Growth Kinetics of Electrodeposited Sulfate-Doped Polypyrrole: Determination of the D...

Synthesis, Characterization and Catalytic Activity of Supported NiMo Catalysts

Estudio de las Interacciones Ácido Húmico-Metales Pesados y Determinación de sus Constantes de Estab...