Producción Científica Profesorado

Kinetic study of the cobalt electrodeposition onto glassy carbon electrode from ammonium sulfate solutions



Mendoza Huizar, Luis Humberto

2009

Kinetical study of the cobalt electrodeposition onto glassy carbon electrode from ammonium sulfate solutions. C.H. Rios-Reyes, M. Granados-Neri and L.H. Mendoza-Huizar. Quim. Nova, Vol. 32, No. 9, 2382-2386, 2009 ISSN . 0100-4042


Abstract


We carried out an electrochemical study of the cobalt electrodeposition onto glassy carbon electrode from an aqueous solution containing 10-2 M of CoSO4 + 1 M (NH4)2SO4 at natural pH 4.5. The potentiostatic study indicated a progressive 3D nucleation and growth during the deposition process. The average diffusion coefficient calculated for this system was 2.65 X 10-6 cm2 s-1 while the ?G for the formation of stable nucleus was 6.50 X 10-20 J/nuclei. The scanning electron microscopy images indicated the formation of small and homogeneous nucleus onto GCE of approximately 300 nm.



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

Cobalt electrodeposition onto highly oriented pyrolytic graphite (HOPG) electrode from ammonium sulf...

Potentiometric behavior of graphite-epoxy electrochemical transducers towards anions, cations and pH...

Synthesis, Characterization and Catalytic Activity of Supported NiMo Catalysts

THEORETICAL STUDY ON THE MODIFICATION OF ACTIVE SITES IN GOLD SURFACES MODELED AS FINITE CLUSTERS: I...

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

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

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

Hydrogen bond studies in substituted N-(2-hydroxyphenyl)--2-[(4-methylbenzenesulfonyl)amino]acetamid...