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

Zinc Electrodeposition from Chloride Solutions onto Glassy Carbon Electrode

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

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

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

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

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

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

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

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

Mercury Ions Removal from Aqueous Solution Using an Activated Composite Membrane