New Methylene Blue Covalently Functionalized Graphene Oxide Nanocomposite as Interfacial Material for the Electroanalysis of Hydrogen Peroxide

New methylene blue (NMB), a phenothiazine dye, was covalently bonded to graphene oxide (GO) using glutaraldehyde as a crosslinking agent, which was characterized by spectroscopic techniques and electrochemistry. The obtained GO–NMB nanocomposite was used as interface material to construct a novel el...

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Autores principales:	Jifang Chen, Ziqing Gao, Ruonan Yang, Huiling Jiang, Lin Bai, Ailong Shao, Hai Wu
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	new methylene blue graphene oxide covalent immobilization hydrogen peroxide electrochemical sensor Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/bbd03f8ebafb40609ad5dc3a36de629a
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spelling	oai:doaj.org-article:bbd03f8ebafb40609ad5dc3a36de629a2021-12-03T04:35:49ZNew Methylene Blue Covalently Functionalized Graphene Oxide Nanocomposite as Interfacial Material for the Electroanalysis of Hydrogen Peroxide2296-264610.3389/fchem.2021.788804https://doaj.org/article/bbd03f8ebafb40609ad5dc3a36de629a2021-12-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fchem.2021.788804/fullhttps://doaj.org/toc/2296-2646New methylene blue (NMB), a phenothiazine dye, was covalently bonded to graphene oxide (GO) using glutaraldehyde as a crosslinking agent, which was characterized by spectroscopic techniques and electrochemistry. The obtained GO–NMB nanocomposite was used as interface material to construct a novel electrochemical sensor for the determination of hydrogen peroxide (H2O2). The electrochemical sensor based on GO–NMB nanocomposite exhibited excellent electrocatalytic activity for the reduction of hydrogen peroxide (H2O2), which was also enhanced by GO within the GO–NMB nanocomposite. With the optimized experimental conditions, the developed sensor showed high sensitivity (79.4 μA mM−1 cm−2) for electrocatalytic determination of H2O2 at the applied potential of −0.50 V in the concentration range of 0.000333 to 2.28 mΜ. The low limit of detection (1.35 μM), good reproducibility, and high stability of the sensor suggests that the electrochemical sensor based on the GO–NMB nanocomposite possesses obvious advantages, which paves a new avenue to functionalize GO for obtaining electrode interface materials.Jifang ChenZiqing GaoRuonan YangHuiling JiangLin BaiAilong ShaoHai WuHai WuFrontiers Media S.A.articlenew methylene bluegraphene oxidecovalent immobilizationhydrogen peroxideelectrochemical sensorChemistryQD1-999ENFrontiers in Chemistry, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	new methylene blue graphene oxide covalent immobilization hydrogen peroxide electrochemical sensor Chemistry QD1-999
spellingShingle	new methylene blue graphene oxide covalent immobilization hydrogen peroxide electrochemical sensor Chemistry QD1-999 Jifang Chen Ziqing Gao Ruonan Yang Huiling Jiang Lin Bai Ailong Shao Hai Wu Hai Wu New Methylene Blue Covalently Functionalized Graphene Oxide Nanocomposite as Interfacial Material for the Electroanalysis of Hydrogen Peroxide
description	New methylene blue (NMB), a phenothiazine dye, was covalently bonded to graphene oxide (GO) using glutaraldehyde as a crosslinking agent, which was characterized by spectroscopic techniques and electrochemistry. The obtained GO–NMB nanocomposite was used as interface material to construct a novel electrochemical sensor for the determination of hydrogen peroxide (H2O2). The electrochemical sensor based on GO–NMB nanocomposite exhibited excellent electrocatalytic activity for the reduction of hydrogen peroxide (H2O2), which was also enhanced by GO within the GO–NMB nanocomposite. With the optimized experimental conditions, the developed sensor showed high sensitivity (79.4 μA mM−1 cm−2) for electrocatalytic determination of H2O2 at the applied potential of −0.50 V in the concentration range of 0.000333 to 2.28 mΜ. The low limit of detection (1.35 μM), good reproducibility, and high stability of the sensor suggests that the electrochemical sensor based on the GO–NMB nanocomposite possesses obvious advantages, which paves a new avenue to functionalize GO for obtaining electrode interface materials.
format	article
author	Jifang Chen Ziqing Gao Ruonan Yang Huiling Jiang Lin Bai Ailong Shao Hai Wu Hai Wu
author_facet	Jifang Chen Ziqing Gao Ruonan Yang Huiling Jiang Lin Bai Ailong Shao Hai Wu Hai Wu
author_sort	Jifang Chen
title	New Methylene Blue Covalently Functionalized Graphene Oxide Nanocomposite as Interfacial Material for the Electroanalysis of Hydrogen Peroxide
title_short	New Methylene Blue Covalently Functionalized Graphene Oxide Nanocomposite as Interfacial Material for the Electroanalysis of Hydrogen Peroxide
title_full	New Methylene Blue Covalently Functionalized Graphene Oxide Nanocomposite as Interfacial Material for the Electroanalysis of Hydrogen Peroxide
title_fullStr	New Methylene Blue Covalently Functionalized Graphene Oxide Nanocomposite as Interfacial Material for the Electroanalysis of Hydrogen Peroxide
title_full_unstemmed	New Methylene Blue Covalently Functionalized Graphene Oxide Nanocomposite as Interfacial Material for the Electroanalysis of Hydrogen Peroxide
title_sort	new methylene blue covalently functionalized graphene oxide nanocomposite as interfacial material for the electroanalysis of hydrogen peroxide
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/bbd03f8ebafb40609ad5dc3a36de629a
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New Methylene Blue Covalently Functionalized Graphene Oxide Nanocomposite as Interfacial Material for the Electroanalysis of Hydrogen Peroxide

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