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

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

ELECTROCHEMICAL STUDY ABOUT ZINC ELECTRODEPOSITION ONTO GCE AND HOPG SUBSTRATES

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

Nucleation and growth of cobalt onto different substrates: Part I. Underpotential deposition onto a ...

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

Mercury Ions Removal from Aqueous Solution Using an Activated Composite Membrane

A Semiempirical PM6 Study of Some Aminopyrimidine Derivatives and their Interaction with an Iron Sur...

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

Morphological and magnetic properties of cobalt nanoclusters electrodeposited onto HOPG

Do Spiroarsoranes Exhibit Polytopal Equilibrium in Solution?