Evaluation of hierarchical glucose oxidase/Co3Mn-CO3 LDH modified electrodes for glucose detection - Université Clermont Auvergne
Article Dans Une Revue Electrochimica Acta Année : 2021

Evaluation of hierarchical glucose oxidase/Co3Mn-CO3 LDH modified electrodes for glucose detection

Résumé

A glucose amperometric biosensor has been prepared by a multilayer deposition on a glassy carbon electrode of Co3Mn-CO3 layered double hydroxide, glucose oxidase (GOx) and a biopolymer (carrageenan), respectively. The original transduction step consists in the electrocatalytic oxidation of H2O2, enzymatically formed, in the Co3Mn-CO3 inner-layer at 0.65 V/Ag-AgCl. The sensitivity and the detection limit, obtained with this optimized bioelectrode (Co3Mn-CO3/GOx/carrageenan, 30/20/10 µg), are 12.8 mA M−1 cm−2 and 0.02 mM, respectively. A 3D-porous bioelectrode was also prepared by impregnation of a carbon felt (CF) with a colloidal suspension of Co3Mn-CO3 nanoparticles and then with GOx. The structure and the morphology of the Co3Mn-CO3/CF composite were characterized by X-ray diffraction and electron scanning microscopy and the bioelectrode GOx/Co3Mn-CO3/CF was finally tested in cyclic voltammetry in the presence of glucose.

Domaines

Chimie
Fichier principal
Vignette du fichier
S0013468621003406.pdf (1017.89 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03256628 , version 1 (10-03-2023)
hal-03256628 , version 2 (10-03-2023)

Licence

Identifiants

Citer

Hani Farhat, Joel Célier, Claude Forano, Christine Mousty. Evaluation of hierarchical glucose oxidase/Co3Mn-CO3 LDH modified electrodes for glucose detection. Electrochimica Acta, 2021, 376, pp.138050. ⟨10.1016/j.electacta.2021.138050⟩. ⟨hal-03256628v1⟩
67 Consultations
71 Téléchargements

Altmetric

Partager

More