Artículo
Novel eco-friendly water-based conductive ink for the preparation of disposable screen-printed electrodes for sensing and biosensing applications
Fecha de publicación:
03/2022
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Electrochimica Acta
ISSN:
0013-4686
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
This paper presents a novel water-based conductive ink obtained by proper combination of chitosan (C) biopolymer, graphite (G) powder, and glycerol (G), and its subsequent use in the screen-printing of disposable electrodes on polyethylene terephthalate (PET) plastic obtained from recyclable soda bottles (CGG/PET electrodes). The electrode was used in two directions, as a sensor for the quantification of uric acid and as a biosensor for the enzymatic quantification of catechol. The linear sweep voltammetry-detection of uric acid (UA), showed a linear range between 8.0 and 500 μmol L−1 and a limit of detection (LOD) of 0.36 μmol L−1. Additionally, the performance of the resulting electrodes for biosensing purposes was evaluated through the development of a catechol biosensor by the modification of the GCG/PET surface with the tyrosinase (Tyr) enzyme, multiwalled carbon nanotubes (MWCNTs), and dyhexadecyl phosphate (DHP) (Tyr-MWCNT-CGG/PET). Using the chronoamperometry technique a linear relationship from 0.5 to 50 μmol L−1 and LOD of 0.3 μmol L−1 were achivied for catechol. The proposed electrode has demonstrated outstanding analytical characteristics, proving its potential as a disposable, low-cost, and environmentally friendly platform for electrochemical sensing and biosensing purposes.
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Articulos(INFIQC)
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Citación
Camargo, Jéssica Rocha; Silva, Tiago Almeida; Rivas, Gustavo Adolfo; Janegitz, Bruno C.; Novel eco-friendly water-based conductive ink for the preparation of disposable screen-printed electrodes for sensing and biosensing applications; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 409; 139968; 3-2022; 1-9
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