Producción Científica Profesorado

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



Mendoza Huizar, Luis Humberto

2006

A voltammetric study of the underpotential deposition of cobalt onto a glassy carbon electrode. L.H. Mendoza-Huizar, C.H. Rios Reyes, M. Rivera and C.A. Galán-Vidal. DOI : 10.2240/azojomo0233


Abstract


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.



Producto de Investigación




Artículos relacionados

Synthesis of Zn compounds derived from 1H-benzimidazol-2-ylmethanamine

Revisión de variables de diseño y condiciones de operación en la electrocoagulación

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

Cobalt electrodeposition on polycrystalline palladium. Influence of temperature on kinetic parameter...

Mercury Ions Removal from Aqueous Solution Using an Activated Composite Membrane

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

Análisis del Comportamiento Presión-Temperatura en la Transición Isotrópico-Nemático del p-Azoxianis...

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

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...