RT info:eu-repo/semantics/article
T1 Voltammetric sensor based on molecularly imprinted chitosan-carbon nanotubes decorated with gold nanoparticles nanocomposite deposited on boron-doped diamond electrodes for catechol detection
A1 Salvo Comino, Coral
A1 Rassas, Ilhem
A1 Minot, Sylvain
A1 Bessueille, Francois
A1 Arab, Madjid
A1 Chevallier, Virginie
A1 Rodríguez Méndez, María Luz
A1 Errachid, Abdelhamid
A1 Jaffrezic Renault, Nicole
K1 Molecular imprinted polymers
K1 Polímeros molecularmente impresos
K1 Electrochemical sensors
K1 Sensores electroquímicos
K1 Catechol
K1 Catecol
K1 Chitosan
K1 Chitosán
K1 2210 Química Física
K1 2303 Química Inorgánica
AB Phenolic compounds such as catechol are present in a wide variety of foods and beverages; they are of great importance due to their antioxidant properties. This research presents the development of a sensitive and biocompatible molecular imprinted sensor for the electrochemical detection of catechol, based on natural biopolymer-electroactive nanocomposites. Gold nanoparticle (AuNP)-decorated multiwalled carbon nanotubes (MWCNT) have been encapsulated in a polymeric chitosan (CS) matrix. This chitosan nanocomposite has been used to develop a molecular imprinted polymers (MIP) in the presence of catechol on a boron-doped diamond (BDD) electrode. The structure of the decorated MWCNT has been studied by TEM, whereas the characterization of the sensor surface has been imaged by AFM, demonstrating the satisfactory adsorption of the film and the adequate coverage of the decorated carbon nanotubes on the electrode surface. The electrochemical response of the sensor has been analyzed by cyclic voltammetry (CV) where excellent reproducibility and repeatability to catechol detection in the range of 0 to 1 mM has been found, with a detection limit of 3.7 × 10−5 M. Finally, the developed sensor was used to detect catechol in a real wine sample.
PB MDPI
SN 1996-1944
YR 2020
FD 2020
LK http://uvadoc.uva.es/handle/10324/40953
UL http://uvadoc.uva.es/handle/10324/40953
LA eng
NO Materials, 2020, vol. 13, n. 3. 11 p.
NO Producción Científica
DS UVaDOC
RD 24-abr-2024