Nanostructured electrodes based on multiwalled carbon nanotube/glyconanoparticles for the oriented immobilization of bilirubin oxidase: Application to the electrocatalytic O2 reduction - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Bioelectrochemistry Année : 2023

Nanostructured electrodes based on multiwalled carbon nanotube/glyconanoparticles for the oriented immobilization of bilirubin oxidase: Application to the electrocatalytic O2 reduction

Résumé

Here we describe the design and the characterization of novel electrode materials consisting of multi-walled carbon nanotubes coated with glyconanoparticles (GNPs) functionalized with anthraquinone sulfonate. The resulting modified electrodes were characterized by scanning electron microscopy and cyclic voltammetry. Their electrochemical behavior reveals a stable pH-dependent redox signal characteristic of anthraquinone sulfonate. Immobilization of bilirubin oxidase on these three-dimensional electrodes leads to the electroenzymatic reduction of O2 to water with an onset potential of 0.5 V/SCE (saturated calomel electrode). A catalytic cathodic current of 174 µA (0.88 mA cm-2) at 0.1 V/SCE, demonstrates that glyconanoparticles modified by anthraquinone sulfonate were able to interact and orientate bilirubin oxidase by electrostatic interactions.
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hal-04440656 , version 1 (06-02-2024)

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Marie Carrière, Paulo Henrique M. Buzzetti, Karine Gorgy, Fabien Giroud, Hong Li, et al.. Nanostructured electrodes based on multiwalled carbon nanotube/glyconanoparticles for the oriented immobilization of bilirubin oxidase: Application to the electrocatalytic O2 reduction. Bioelectrochemistry, 2023, 150, pp.108328. ⟨10.1016/j.bioelechem.2022.108328⟩. ⟨hal-04440656⟩

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