Producción Científica Profesorado

A Voltammetric Study Of The Underpotential Deposition Of Cobalt Onto A Glassy Carbon Electrode

Galan Vidal, Carlos Andres


L.H. Mendoza-Huizar, C.H. Rios Reyes, M. Rivera-Hernández and C.A. Galán-Vidal. The underpotential deposition of cobalt onto glassy carbon electrode. A voltammetric study. ATM Advances in Technology of Materials & Materials Processing 8 (2006) 152-156. ISSN 1440-0731


We have carried out an electrochemical study of the underpotential deposition of cobalt onto glassy carbon electrode (GCE) from an aqueous 10-2 M CoClO4, 1M NH4CI (pH 4.5) solution by the voltammetric techniques (cyclic, linear and rotating disk electrode voltammetry). The analysis of the experimental data clearly showed the presence of an underpotential deposition (UPD) process of cobalt onto GCE that started at -0.160 V vs Ag/AgCl (KCl sat.). Both, the linear plots of the density current peak versus the scan potential rate and the limit density current versus the rotation rate also suggested that the UPD process of cobalt onto GCE was diffusional-controlled. The voltammetric studies suggested the existence of at least two phases of cobalt deposited in UPD conditions. The formation of the first phase was favored in the [-0.200 - -0.370] V range and when the thickness of the diffusional layer decreased, while the second one was favored in the [-0.380 - -0.550] V range.

Artículos relacionados

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

Kinetics of Polypyrrole Films Doped with Sulphate Ions Electrodeposited Over Graphite - Epoxy Resin ...

Do Spiroarsoranes Exhibit Polytopal Equilibrium in Solution?

Underpotential deposition of cobalt onto polycrystalline platinum

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

Mercury Ions Removal from Aqueous Solution Using an Activated Composite Membrane


Synthesis and crystal structures of cis-palladium(II) and cis-platinum(II) complexes containing di...

Morphological and magnetic properties of cobalt nanoclusters electrodeposited onto HOPG

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