tudy of the electrochemical behavior of diclofenac in its anionic form and pair ion in an aqueous medium on a carbon fiber ultramicroelectrode
In this work, an electrochemical study of the diclofenac (DCF) redox process, in an aqueous medium, was carried out employing an electrolyte bath containing 0.001 M DCF and 0.1 M Na2SO4 at pH=7, and a carbon fiber electrode of 7 mm of diameter. The oxidation processes were related to diclofenac in i...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2023 |
| País: | México |
| Institución: | UNIVERSIDAD AUTÓNOMA DEL ESTADO DE HIDALGO |
| Repositorio: | PÄDI Boletín Científico de Ciencias Básicas e Ingeniería del ICBI |
| Idioma: | español |
| OAI Identifier: | oai:repository.uaeh.edu.mx:article/10970 |
| Acceso en línea: | https://repository.uaeh.edu.mx/revistas/index.php/icbi/article/view/10970 |
| Access Level: | acceso abierto |
| Palabra clave: | diclofenac oxidation reduction voltammetry PM7 diclofenaco oxidación reducción voltametría |
| Sumario: | In this work, an electrochemical study of the diclofenac (DCF) redox process, in an aqueous medium, was carried out employing an electrolyte bath containing 0.001 M DCF and 0.1 M Na2SO4 at pH=7, and a carbon fiber electrode of 7 mm of diameter. The oxidation processes were related to diclofenac in its anionic form (DCF-A), whereas the reduction processes were related to the par ion {DFC-A − Na+}0. The linear tendencies observed on the plot of density current peak vs the square scan rate indicate that both processes are diffusional controlled. The evaluation of the charge transfer coefficient employing the Tafel’s equation indicate that the cathodic coefficient value is 0.46, while the anodic is 0.56. The comparison of the electronic properties of the protonated species and {DFC-A − Na+}0 suggests that the par ion formed under our experimental conditions is responsible for the reduction process observed during the voltamperometic study. |
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