Producción Científica Profesorado

Electrochemical Characterization of the Electrocrystalization of Bismuth on a Graphite Electrode



Alvarez Romero, Giaan Arturo

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

Chemical studies of anthocyanins: A review

Metal content evaluation and its effect on the stability of anthocyanins

Determination of glucose by flow injection analysis with amperometric detection at Fe(III)-(tris(3,5...

Silver and Silver Chloride Electrodeposits, an Alternative in the Construction of Ag/AgCl Solid Elec...

Characterization of Main Anthocyanins Extracted from Pericarp Blue Corn by MALDI-ToF MS

Potentiometric Behavior of Diverse Polypyrrolesulphate Films Electro Synthesized on Graphite Epoxy ...

Simultaneous determination of tetracyclines in poultry muscle by capillary zone electrophoresis

Sequential Injection Spectrophotometric Determination of Diclofenac in Urine and Pharmaceutical Form...

Potentiometric quantification of saccharin by using a selective membrane formed by pyrrole electropo...

Development of a Chloride Ion-Selective Solid State Sensor Based on Doped Polypyrrole-Graphite-Epoxy...