Producción Científica Profesorado

Electrodeposition of Cobalt Nanoclusters from Ammonical Chloride Solutions onto HOPG Electrodes. A Kinetical and Morphological Study.



Mendoza Huizar, Luis Humberto

2017

Electrodeposition of Cobalt Nanoclusters from Ammonical Chloride Solutions onto HOPG Electrodes. A Kinetical and Morphological Study. L.H. Mendoza Huizar, C.H. Rios-Reyes, M. Rivera. J. Chil. Chem. Soc. 2017, vol.62, n.3, pp.3621-3626. ISSN 0717-9707.


Abstract


A kinetical study about the Co electrodeposition onto Highly Oriented Pyrolytic Graphite electrodes from an aqueous solution containing 0.01 M CoCl2 + 1 M NH4CI (pH = 7) was conducted at overpotential conditions through potentiostatic studies. The entire chronoamperograms were adequately predicted, considering the contribution to the total current of three different processes: a Langmuir-type adsorption process, a three-dimensional nucleation and growth and a proton reduction process. In all cases, the nucleation rate and the number of active nucleation sites are potential dependent. The Atomic Force Microscopy study revealed the presence of homogeneous cobalt clusters of less of 100 nm in height and 50 nm in diameter at different potential values.



Producto de Investigación




Artículos relacionados

Bioacumulación y daños genotóxicos en Pez Cebra (Danio rerio) por arsénico en aguas de Zimapán, Hida...

Do Spiroarsoranes Exhibit Polytopal Equilibrium in Solution?

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

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

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

Copper Electrodeposition On Glassy Carbon And Highly Oriented Pyrolytic Graphite Substrates From Per...

Effect of TiO2-Al2O3 sol-gel supports on the superficial Ni and Mo species in oxidized and sulfided ...

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

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

Theoretical and Experimental Study of Cobalt Nucleation and Growth onto Gold Substrate with Differen...