Producción Científica Profesorado

Electrochemical Characterization of the Electrocrystalization of Bismuth on a Graphite Electrode



Mendoza Huizar, Luis Humberto

2017

Daniel Peña Ramirez, Giaan Arturo Álvarez-Romero, Luis Humberto Mendoza Huizar, Silvia Corona-Avendaño, ECS Trans. 2017, 76(1), 161-170doi: 10.1149/07601.0161ecst


Abstract


Bismuth electrocrystalization on a graphite electrode (GE) was studied by cyclic voltammetry and cronoamperometric techniques. Cyclic voltammetry shows that the electrocrystalization of is controlled by diffusion. Nucleation mechanisms depend on the imposed potential and time. Current transients were analyzed with the Sharifker-Hills model, the nucleation mechanism and growth of Bi on the GE is not a simple process, since at potentials between -210 and -240 mV, Bi electrocrystalization takes place in two different stages: at the first stage a 2D instantaneous mechanism can be recognized, followed in the second stage by a 3D progressive mechanism. For potentials lower than -260 mV only a 3D progressive nucleation mechanism can be recognize. These results imply that different characteristics for the Bi film can be obtained depending on the applied electrocrystalization potential, which can be considered for different applications.



Producto de Investigación




Artículos relacionados

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

Underpotential deposition of cobalt onto polycrystalline platinum

The role of temperature in copper electrocrystallization in ammoniachloride solutions

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

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

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

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

Zinc Electrodeposition from Chloride Solutions onto Glassy Carbon Electrode

Electrochemical kinetic study about cobalt electrodeposition onto GCE and HOPG substrates from sulfa...

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