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Highly efficient Ag doped δ-MnO(2) decorated graphene: Comparison and application in electrochemical detection of H(2)O(2)

Cytotoxic H(2)O(2) is an inevitable part of our life, even during this contemporary pandemic COVID-19. Personal protective equipment of the front line fighter against coronavirus could be sterilized easily by H(2)O(2) for reuse. In this study, Ag doped δ-MnO(2) nanorods supported graphene nanocompos...

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Autores principales: Mohiuddin, Abdul Kader, Jeon, Seungwon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Published by Elsevier B.V. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8959659/
https://www.ncbi.nlm.nih.gov/pubmed/35370331
http://dx.doi.org/10.1016/j.apsusc.2022.153162
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author Mohiuddin, Abdul Kader
Jeon, Seungwon
author_facet Mohiuddin, Abdul Kader
Jeon, Seungwon
author_sort Mohiuddin, Abdul Kader
collection PubMed
description Cytotoxic H(2)O(2) is an inevitable part of our life, even during this contemporary pandemic COVID-19. Personal protective equipment of the front line fighter against coronavirus could be sterilized easily by H(2)O(2) for reuse. In this study, Ag doped δ-MnO(2) nanorods supported graphene nanocomposite (denoted as Ag@δ-MnO(2)/G) was synthesized as a nonenzymatic electrochemical sensor for the sensitive detection of H(2)O(2). The ternary nanocomposite has overcome the poor electrical conductivity of δ-MnO(2) and also the severe aggregation of Ag NPs. Furthermore, δ-MnO(2)/G provided a rougher surface and large numbers of functional groups for doping more numbers of Ag atoms, which effectively modulate the electronic properties of the nanocomposite. As a result, electroactive surface area and electrical conductivity of Ag@δ-MnO(2)/G increased remarkably as well as excellent catalytic activity observed towards H(2)O(2) reduction. The modified glassy carbon electrode exhibited fast amperometric response time (<2 s) in H(2)O(2) determination. The limit of detection was calculated as 68 nM in the broad linear range (0.005–90.64 mM) with high sensitivity of 104.43 µA mM(−1) cm(−2). No significant interference, long-term stability, excellent reproducibility, satisfactory repeatability, practical applicability towards food samples and wastewater proved the efficiency of the proposed sensor.
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spelling pubmed-89596592022-03-29 Highly efficient Ag doped δ-MnO(2) decorated graphene: Comparison and application in electrochemical detection of H(2)O(2) Mohiuddin, Abdul Kader Jeon, Seungwon Appl Surf Sci Full Length Article Cytotoxic H(2)O(2) is an inevitable part of our life, even during this contemporary pandemic COVID-19. Personal protective equipment of the front line fighter against coronavirus could be sterilized easily by H(2)O(2) for reuse. In this study, Ag doped δ-MnO(2) nanorods supported graphene nanocomposite (denoted as Ag@δ-MnO(2)/G) was synthesized as a nonenzymatic electrochemical sensor for the sensitive detection of H(2)O(2). The ternary nanocomposite has overcome the poor electrical conductivity of δ-MnO(2) and also the severe aggregation of Ag NPs. Furthermore, δ-MnO(2)/G provided a rougher surface and large numbers of functional groups for doping more numbers of Ag atoms, which effectively modulate the electronic properties of the nanocomposite. As a result, electroactive surface area and electrical conductivity of Ag@δ-MnO(2)/G increased remarkably as well as excellent catalytic activity observed towards H(2)O(2) reduction. The modified glassy carbon electrode exhibited fast amperometric response time (<2 s) in H(2)O(2) determination. The limit of detection was calculated as 68 nM in the broad linear range (0.005–90.64 mM) with high sensitivity of 104.43 µA mM(−1) cm(−2). No significant interference, long-term stability, excellent reproducibility, satisfactory repeatability, practical applicability towards food samples and wastewater proved the efficiency of the proposed sensor. Published by Elsevier B.V. 2022-08-01 2022-03-28 /pmc/articles/PMC8959659/ /pubmed/35370331 http://dx.doi.org/10.1016/j.apsusc.2022.153162 Text en © 2022 Published by Elsevier B.V. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.
spellingShingle Full Length Article
Mohiuddin, Abdul Kader
Jeon, Seungwon
Highly efficient Ag doped δ-MnO(2) decorated graphene: Comparison and application in electrochemical detection of H(2)O(2)
title Highly efficient Ag doped δ-MnO(2) decorated graphene: Comparison and application in electrochemical detection of H(2)O(2)
title_full Highly efficient Ag doped δ-MnO(2) decorated graphene: Comparison and application in electrochemical detection of H(2)O(2)
title_fullStr Highly efficient Ag doped δ-MnO(2) decorated graphene: Comparison and application in electrochemical detection of H(2)O(2)
title_full_unstemmed Highly efficient Ag doped δ-MnO(2) decorated graphene: Comparison and application in electrochemical detection of H(2)O(2)
title_short Highly efficient Ag doped δ-MnO(2) decorated graphene: Comparison and application in electrochemical detection of H(2)O(2)
title_sort highly efficient ag doped δ-mno(2) decorated graphene: comparison and application in electrochemical detection of h(2)o(2)
topic Full Length Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8959659/
https://www.ncbi.nlm.nih.gov/pubmed/35370331
http://dx.doi.org/10.1016/j.apsusc.2022.153162
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