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Interaction between Amorphous Zirconia Nanoparticles and Graphite: Electrochemical Applications for Gallic Acid Sensing Using Carbon Paste Electrodes in Wine

Amorphous zirconium oxide nanoparticles (ZrO(2)) have been used for the first time, to modify carbon paste electrode (CPE) and used as a sensor for the electrochemical determination of gallic acid (GA). The voltammetric results of the ZrO(2) nanoparticles-modified CPE showed efficient electrochemica...

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Autores principales: Chikere, Chrys. O., Faisal, Nadimul Haque, Kong-Thoo-Lin, Paul, Fernandez, Carlos
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7153396/
https://www.ncbi.nlm.nih.gov/pubmed/32192127
http://dx.doi.org/10.3390/nano10030537
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author Chikere, Chrys. O.
Faisal, Nadimul Haque
Kong-Thoo-Lin, Paul
Fernandez, Carlos
author_facet Chikere, Chrys. O.
Faisal, Nadimul Haque
Kong-Thoo-Lin, Paul
Fernandez, Carlos
author_sort Chikere, Chrys. O.
collection PubMed
description Amorphous zirconium oxide nanoparticles (ZrO(2)) have been used for the first time, to modify carbon paste electrode (CPE) and used as a sensor for the electrochemical determination of gallic acid (GA). The voltammetric results of the ZrO(2) nanoparticles-modified CPE showed efficient electrochemical oxidation of gallic acid, with a significantly enhanced peak current from 261 µA ± 3 to about 451 µA ± 1. The modified surface of the electrode and the synthesised zirconia nanoparticles were characterised by scanning electrode microscopy (SEM), Energy-dispersive x-ray spectroscopy (EDXA), X-ray powdered diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR). Meanwhile, the electrochemical behaviour of GA on the surface of the modified electrode was studied using differential pulse voltammetry (DPV), showing a sensitivity of the electrode for GA determination, within a concentration range of 1 × 10(−6) mol L(−1) to 1 × 10(−3) mol L(−1) with a correlation coefficient of R(2) of 0.9945 and a limit of detection of 1.24 × 10(−7) mol L(−1) (S/N = 3). The proposed ZrO(2) nanoparticles modified CPE was successfully used for the determination of GA in red and white wine, with concentrations of 0.103 mmol L(−1) and 0.049 mmol L(−1) respectively.
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spelling pubmed-71533962020-04-20 Interaction between Amorphous Zirconia Nanoparticles and Graphite: Electrochemical Applications for Gallic Acid Sensing Using Carbon Paste Electrodes in Wine Chikere, Chrys. O. Faisal, Nadimul Haque Kong-Thoo-Lin, Paul Fernandez, Carlos Nanomaterials (Basel) Article Amorphous zirconium oxide nanoparticles (ZrO(2)) have been used for the first time, to modify carbon paste electrode (CPE) and used as a sensor for the electrochemical determination of gallic acid (GA). The voltammetric results of the ZrO(2) nanoparticles-modified CPE showed efficient electrochemical oxidation of gallic acid, with a significantly enhanced peak current from 261 µA ± 3 to about 451 µA ± 1. The modified surface of the electrode and the synthesised zirconia nanoparticles were characterised by scanning electrode microscopy (SEM), Energy-dispersive x-ray spectroscopy (EDXA), X-ray powdered diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR). Meanwhile, the electrochemical behaviour of GA on the surface of the modified electrode was studied using differential pulse voltammetry (DPV), showing a sensitivity of the electrode for GA determination, within a concentration range of 1 × 10(−6) mol L(−1) to 1 × 10(−3) mol L(−1) with a correlation coefficient of R(2) of 0.9945 and a limit of detection of 1.24 × 10(−7) mol L(−1) (S/N = 3). The proposed ZrO(2) nanoparticles modified CPE was successfully used for the determination of GA in red and white wine, with concentrations of 0.103 mmol L(−1) and 0.049 mmol L(−1) respectively. MDPI 2020-03-17 /pmc/articles/PMC7153396/ /pubmed/32192127 http://dx.doi.org/10.3390/nano10030537 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chikere, Chrys. O.
Faisal, Nadimul Haque
Kong-Thoo-Lin, Paul
Fernandez, Carlos
Interaction between Amorphous Zirconia Nanoparticles and Graphite: Electrochemical Applications for Gallic Acid Sensing Using Carbon Paste Electrodes in Wine
title Interaction between Amorphous Zirconia Nanoparticles and Graphite: Electrochemical Applications for Gallic Acid Sensing Using Carbon Paste Electrodes in Wine
title_full Interaction between Amorphous Zirconia Nanoparticles and Graphite: Electrochemical Applications for Gallic Acid Sensing Using Carbon Paste Electrodes in Wine
title_fullStr Interaction between Amorphous Zirconia Nanoparticles and Graphite: Electrochemical Applications for Gallic Acid Sensing Using Carbon Paste Electrodes in Wine
title_full_unstemmed Interaction between Amorphous Zirconia Nanoparticles and Graphite: Electrochemical Applications for Gallic Acid Sensing Using Carbon Paste Electrodes in Wine
title_short Interaction between Amorphous Zirconia Nanoparticles and Graphite: Electrochemical Applications for Gallic Acid Sensing Using Carbon Paste Electrodes in Wine
title_sort interaction between amorphous zirconia nanoparticles and graphite: electrochemical applications for gallic acid sensing using carbon paste electrodes in wine
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7153396/
https://www.ncbi.nlm.nih.gov/pubmed/32192127
http://dx.doi.org/10.3390/nano10030537
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