Partículas de CoO(OH) Dispersas em Pasta de Carbono Aplicado na Eletrooxidação de Compostos Fenólicos
In this work, particles of cobalt oxyhydroxide (III), CoO (OH), synthesized by alkaline precipitation were used in a carbon paste electrode modified [CPEM_CoO(OH)] for the detection of phenolic compounds (catechol, guiacol, pyrogallol and salicylic acid). The cobalt-based electrode acts as the elect...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | Brasil |
| Institución: | Universidade Federal de Mato Grosso do Sul (UFMS) |
| Repositorio: | Orbital - The Electronic Journal of Chemistry (Campo Grande) |
| Idioma: | inglés |
| OAI Identifier: | oai:periodicos.ufms.br:article/17839 |
| Acceso en línea: | https://periodicos.ufms.br/index.php/orbital/article/view/17839 |
| Access Level: | acceso abierto |
| Palabra clave: | cobalt oxyhydroxide (III) modified electrode electrochemical detection phenolic compounds |
| Sumario: | In this work, particles of cobalt oxyhydroxide (III), CoO (OH), synthesized by alkaline precipitation were used in a carbon paste electrode modified [CPEM_CoO(OH)] for the detection of phenolic compounds (catechol, guiacol, pyrogallol and salicylic acid). The cobalt-based electrode acts as the electron mediator, where the ion Co (III) acts effectively in the oxidation/reduction of analyte, via reductive dissolution. As a result, the modified carbon paste electrode [CPEM_CoO(OH)] exhibited good performance in the detection of phenolic compounds in a concentration range between 0 to 0.15 µmol L-1, with a limit of detection (LOD) of 10-8 mol L-1. The electrochemical studies were performed using the techniques of cyclic voltammetry and linear. DOI: http://dx.doi.org/10.17807/orbital.v7i4.780 |
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