Partículas de CoO(OH) Dispersas em Pasta de Carbono Aplicado na Eletrooxidação de Compostos Fenólicos

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...

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Bibliographic Details
Main Authors: Janaína S. Bonini, Filipe Quadros Mariani, Eryza Guimarães de Castro, Andressa Galli, Rafael Marangoni, Fauze Jacó Anaissi
Format: Article
Language:English
Published: Universidade Federal de Mato Grosso do Sul 2015-12-01
Series:Orbital: The Electronic Journal of Chemistry
Subjects:
cobalt oxyhydroxide (III)
modified electrode
electrochemical detection
phenolic compounds
Online Access:https://periodicos.ufms.br/index.php/orbital/article/view/17839
Description
Summary: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
ISSN:1984-6428

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