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

Influence of the Cation Nature of the Sulphate Salt on the Electrochemical Synthesis of Sulfate-Dope...

Mercury Ions Removal from Aqueous Solution Using an Activated Composite Membrane

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

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

Underpotential deposition of cobalt onto polycrystalline platinum

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

ELECTROCHEMICAL STUDY ABOUT ZINC ELECTRODEPOSITION ONTO GCE AND HOPG SUBSTRATES

Efecto de la composición del soporte sobre las estructuras superficiales de óxidos de níquel y molib...

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

Cobalt Electrodeposition Process from Electrolytic Baths based on CoSO4 and (NH4)2SO4. Influence of ...