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An electrochemical sensor for the detection of arsenic using nanocomposite-modified electrode

The aim of this research is to develop an electrochemical sensor based on a conducting polymer, polyaniline, and a cationic polymer, poly(diallyldimethylammonium chloride), reinforced with graphene oxide nanosheets functionalized with acrylic acid. The two-dimensional nature of acrylic acid function...

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Autores principales: Hamid Kargari, Sara, Ahour, Fatemeh, Mahmoudian, Mehdi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10232514/
https://www.ncbi.nlm.nih.gov/pubmed/37258602
http://dx.doi.org/10.1038/s41598-023-36103-6
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author Hamid Kargari, Sara
Ahour, Fatemeh
Mahmoudian, Mehdi
author_facet Hamid Kargari, Sara
Ahour, Fatemeh
Mahmoudian, Mehdi
author_sort Hamid Kargari, Sara
collection PubMed
description The aim of this research is to develop an electrochemical sensor based on a conducting polymer, polyaniline, and a cationic polymer, poly(diallyldimethylammonium chloride), reinforced with graphene oxide nanosheets functionalized with acrylic acid. The two-dimensional nature of acrylic acid functionalized graphene oxide nanosheets and clusters made of conductive polymers and acrylic acid functionalized graphene oxide nanosheets were confirmed by microscopic tests. The prepared nanocomposite was deposited on the glassy carbon electrode in order to prepare an electrochemical sensor for the detection of arsenic by cyclic voltammetry and differential pulse voltammetry methods. It should be mentioned that the presence of acrylic acid functionalized graphene oxide nanosheets increases the surface area due to the nano size effect and better dispersion of this nanomaterial, poly(diallyldimethylammonium chloride), increases the adsorption capacity of the analyte due to electrostatic interaction between the negatively charged analyte and positively charged surface, and polyanilin increases the charge transfer rate due to the good conductivity. The results show that the prepared electrode has a sensitivity equal to 1.79 A/M with 0.12 μM as the detection limit. The proposed sensor could be used for the determination of total inorganic arsenic by first oxidative pretreatment for conversion of As(III) to As(V).
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spelling pubmed-102325142023-06-02 An electrochemical sensor for the detection of arsenic using nanocomposite-modified electrode Hamid Kargari, Sara Ahour, Fatemeh Mahmoudian, Mehdi Sci Rep Article The aim of this research is to develop an electrochemical sensor based on a conducting polymer, polyaniline, and a cationic polymer, poly(diallyldimethylammonium chloride), reinforced with graphene oxide nanosheets functionalized with acrylic acid. The two-dimensional nature of acrylic acid functionalized graphene oxide nanosheets and clusters made of conductive polymers and acrylic acid functionalized graphene oxide nanosheets were confirmed by microscopic tests. The prepared nanocomposite was deposited on the glassy carbon electrode in order to prepare an electrochemical sensor for the detection of arsenic by cyclic voltammetry and differential pulse voltammetry methods. It should be mentioned that the presence of acrylic acid functionalized graphene oxide nanosheets increases the surface area due to the nano size effect and better dispersion of this nanomaterial, poly(diallyldimethylammonium chloride), increases the adsorption capacity of the analyte due to electrostatic interaction between the negatively charged analyte and positively charged surface, and polyanilin increases the charge transfer rate due to the good conductivity. The results show that the prepared electrode has a sensitivity equal to 1.79 A/M with 0.12 μM as the detection limit. The proposed sensor could be used for the determination of total inorganic arsenic by first oxidative pretreatment for conversion of As(III) to As(V). Nature Publishing Group UK 2023-05-31 /pmc/articles/PMC10232514/ /pubmed/37258602 http://dx.doi.org/10.1038/s41598-023-36103-6 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Hamid Kargari, Sara
Ahour, Fatemeh
Mahmoudian, Mehdi
An electrochemical sensor for the detection of arsenic using nanocomposite-modified electrode
title An electrochemical sensor for the detection of arsenic using nanocomposite-modified electrode
title_full An electrochemical sensor for the detection of arsenic using nanocomposite-modified electrode
title_fullStr An electrochemical sensor for the detection of arsenic using nanocomposite-modified electrode
title_full_unstemmed An electrochemical sensor for the detection of arsenic using nanocomposite-modified electrode
title_short An electrochemical sensor for the detection of arsenic using nanocomposite-modified electrode
title_sort electrochemical sensor for the detection of arsenic using nanocomposite-modified electrode
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10232514/
https://www.ncbi.nlm.nih.gov/pubmed/37258602
http://dx.doi.org/10.1038/s41598-023-36103-6
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