Modeling Electrochemical Impedance Spectroscopy Results of Cu and Cu-Thiosemicarbizide-Boron Nitride Nanosheets Electrodes in 3.5 wt% NaCl Solution, Based on an Electrochemical Reaction Mechanism
Por:
Barraza-Fierro, Jesus Israel, Lopez-Martinez, Edgar, Vazquez-Gomez, Octavio, Galicia-Garcia, Monica, Cruz-Mejia, Hector, Villalobos, Julio C.
Publicada:
12 may 2023
Resumen:
The corrosion behavior of copper and copper-functionalized boron nitride
nanocomposites (Cu-BNNS) was studied in a 3.5 wt.% NaCl solution.
Polarization curves and cyclic voltammetry experiments were used to
differentiate the various stages of corrosion behavior. Additionally,
electrochemical impedance spectroscopy (EIS) was used to understand the
different steps in the degradation mechanism. The EIS results were
analyzed using adsorption models at open circuit potential and at a bias
potential of 250 mV, and different reaction kinetics parameters were
quantified. During the first hour of immersion, the formation of CuCl
increased on the Cu-BNNS, where the reaction constant for the formation
of adsorbed CuCl was lower in the impedance model. However, on the Cu
electrode, CuCl was not formed during the first hour, and the reaction
constant was higher. The proposed model is consistent with the
experimental observations from cyclic voltammetry, polarization, and
scanning electron microscopy.
Filiaciones:
Barraza-Fierro, Jesus Israel:
Escuela Preparatoria, Universidad La Salle Nezahualcóyotl, Nezahualcóyotl, 57205, Mexico
División de Tecnología Ambiental, Universidad Tecnológica de Nezahualcóyotl, Nezahualcóyotl, 57000, Mexico
Lopez-Martinez, Edgar:
Universidad de Istmo, Santo Domingo Tehuantepec, 70760, Mexico
Vazquez-Gomez, Octavio:
Tecnológico Nacional de México/I.T. Morelia, Morelia, 58120, Mexico
Consejo Nacional de Ciencia y Tecnología, Mexico City, 03940, Mexico
Galicia-Garcia, Monica:
Departamento de Ciencias Químico Biológicas, Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Ciudad Juárez, 32310, Mexico
Cruz-Mejia, Hector:
División de Ingeniería en Nanotecnología, Universidad Politécnica del Valle de México, Tultitlan, 54910, Mexico
Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
Villalobos, Julio C.:
Tecnológico Nacional de México/I.T. Morelia, Morelia, 58120, Mexico
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