Facile synthesis of petal-like VS2 anchored onto graphene nanosheets for the rapid sensing of toxic pesticide in polluted water

Fenitrothion (FT) is a toxic phosphorothioate insecticide that can easily contaminate aquatic environments, leading to a detrimental effect on the aquatic species and harmful endocrine disrupter effects on human health. Therefore, it is vital to develop a reliable methodology for the accurate and pr...

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Autores principales:	A.T. Ezhil Vilian, Seung-Kyu Hwang, Min Ji Lee, Muniyandi Bagavathi, Yun Suk Huh, Young-Kyu Han
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	electrochemical sensor reduced graphene oxide amperometry composite fenitrothion Environmental pollution TD172-193.5 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/5c8f916bcf2b4dbd9c75058955761d5e
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spelling	oai:doaj.org-article:5c8f916bcf2b4dbd9c75058955761d5e2021-12-02T04:58:55ZFacile synthesis of petal-like VS2 anchored onto graphene nanosheets for the rapid sensing of toxic pesticide in polluted water0147-651310.1016/j.ecoenv.2021.113021https://doaj.org/article/5c8f916bcf2b4dbd9c75058955761d5e2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0147651321011337https://doaj.org/toc/0147-6513Fenitrothion (FT) is a toxic phosphorothioate insecticide that can easily contaminate aquatic environments, leading to a detrimental effect on the aquatic species and harmful endocrine disrupter effects on human health. Therefore, it is vital to develop a reliable methodology for the accurate and precise real-time sensing of carcinogenic FT in water samples at trace concentration to ensure environmental safety. We aim to fabricate the low-cost VS2-attached reduced graphene oxide (RGO) sheets via a simple hydrothermal approach. It was further applied for the rapid and accurate sensing of toxic FT. The VS2/RGO-composite delivers a more favorable microenvironment for the rapid electrocatalytic sensing performance towards toxic FT reduction than the VS2 and RGO modified electrodes. The electron transfer rate constant (ks) and the saturating absorption capacity (Γ) value of FT was evaluated to be 1.52 s−1 and 2.18 × 10−10 mol cm−2, respectively. The constructed sensor exhibits a wide linear relationship after amperometry between the cathodic current densities and the concentrations of FT in the range of 5–90 nM and high sensitivity (5.569 μA nM−1 cm−2); moreover, the detection limit was 0.07 nM (S/N = 3). The fabricated sensor has excellent anti-interference ability and reproducibility for the direct sensing of FT in river water, seawater, and lake water samples with acceptable recoveries. It is a promising sensing device for in-situ quantification of FT in agricultural products and ecological systems.A.T. Ezhil VilianSeung-Kyu HwangMin Ji LeeMuniyandi BagavathiYun Suk HuhYoung-Kyu HanElsevierarticleelectrochemical sensorreduced graphene oxideamperometrycompositefenitrothionEnvironmental pollutionTD172-193.5Environmental sciencesGE1-350ENEcotoxicology and Environmental Safety, Vol 228, Iss , Pp 113021- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	electrochemical sensor reduced graphene oxide amperometry composite fenitrothion Environmental pollution TD172-193.5 Environmental sciences GE1-350
spellingShingle	electrochemical sensor reduced graphene oxide amperometry composite fenitrothion Environmental pollution TD172-193.5 Environmental sciences GE1-350 A.T. Ezhil Vilian Seung-Kyu Hwang Min Ji Lee Muniyandi Bagavathi Yun Suk Huh Young-Kyu Han Facile synthesis of petal-like VS2 anchored onto graphene nanosheets for the rapid sensing of toxic pesticide in polluted water
description	Fenitrothion (FT) is a toxic phosphorothioate insecticide that can easily contaminate aquatic environments, leading to a detrimental effect on the aquatic species and harmful endocrine disrupter effects on human health. Therefore, it is vital to develop a reliable methodology for the accurate and precise real-time sensing of carcinogenic FT in water samples at trace concentration to ensure environmental safety. We aim to fabricate the low-cost VS2-attached reduced graphene oxide (RGO) sheets via a simple hydrothermal approach. It was further applied for the rapid and accurate sensing of toxic FT. The VS2/RGO-composite delivers a more favorable microenvironment for the rapid electrocatalytic sensing performance towards toxic FT reduction than the VS2 and RGO modified electrodes. The electron transfer rate constant (ks) and the saturating absorption capacity (Γ) value of FT was evaluated to be 1.52 s−1 and 2.18 × 10−10 mol cm−2, respectively. The constructed sensor exhibits a wide linear relationship after amperometry between the cathodic current densities and the concentrations of FT in the range of 5–90 nM and high sensitivity (5.569 μA nM−1 cm−2); moreover, the detection limit was 0.07 nM (S/N = 3). The fabricated sensor has excellent anti-interference ability and reproducibility for the direct sensing of FT in river water, seawater, and lake water samples with acceptable recoveries. It is a promising sensing device for in-situ quantification of FT in agricultural products and ecological systems.
format	article
author	A.T. Ezhil Vilian Seung-Kyu Hwang Min Ji Lee Muniyandi Bagavathi Yun Suk Huh Young-Kyu Han
author_facet	A.T. Ezhil Vilian Seung-Kyu Hwang Min Ji Lee Muniyandi Bagavathi Yun Suk Huh Young-Kyu Han
author_sort	A.T. Ezhil Vilian
title	Facile synthesis of petal-like VS2 anchored onto graphene nanosheets for the rapid sensing of toxic pesticide in polluted water
title_short	Facile synthesis of petal-like VS2 anchored onto graphene nanosheets for the rapid sensing of toxic pesticide in polluted water
title_full	Facile synthesis of petal-like VS2 anchored onto graphene nanosheets for the rapid sensing of toxic pesticide in polluted water
title_fullStr	Facile synthesis of petal-like VS2 anchored onto graphene nanosheets for the rapid sensing of toxic pesticide in polluted water
title_full_unstemmed	Facile synthesis of petal-like VS2 anchored onto graphene nanosheets for the rapid sensing of toxic pesticide in polluted water
title_sort	facile synthesis of petal-like vs2 anchored onto graphene nanosheets for the rapid sensing of toxic pesticide in polluted water
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/5c8f916bcf2b4dbd9c75058955761d5e
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Facile synthesis of petal-like VS2 anchored onto graphene nanosheets for the rapid sensing of toxic pesticide in polluted water

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