Functionalised CuO nanostructures for the detection of organophosphorus pesticides: A non-enzymatic inhibition approach coupled with nano-scale electrode engineering to improve electrode sensitivity

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dc.contributor.authorTunesi, Mawada Mohamed
dc.contributor.authorKalwar, Nazar
dc.contributor.authorAbbas, Malik Waseem
dc.contributor.authorKarakus, Selcan
dc.contributor.authorSoomro, Razium Ali
dc.contributor.authorKilislioglu, Ayben
dc.contributor.authorAbro, Muhammad Ishaq
dc.date.accessioned2020-03-26T19:54:03Z
dc.date.available2020-03-26T19:54:03Z
dc.date.issued2018
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThis study explores the potential of a newly-developed indium tin oxide (ITO) based electrode for the development of an electro-catalytic inhibition sensor system for organophosphorus pesticides. The sensor relies on the redox signal inhibition of pralidoxime chloride (PAM) immobilised over the pimelic acid functionalised CuO nanostructures grown in-situ over an ITO substrate. The in-situ growth enabled on-pot modification and functionalisation of ITO electrodes with the formation of uniform nanostructures possessing high surface area and excellent interface contact. The versatility of the proposed electrode was evident from its excellent electrochemical characteristics evaluated in comparison to bare and slurry-driven glassy carbon electrodes (GCEs). The high structural uniformity and greater surface coverage achieved by in-situ growth provided a uniform surface environment for electrode-analyte interaction, leading to good inhibition signal sensitivity and repeatability. The developed sensor was successful in detecting chlorpyrifos, fenthion and methyl parathion within the concentration range of 0.01-0.16 mu M with signal sensitivity reaching down to 1.6 x 10(-9), 2.5 x 10(-9) and 6.7 x 10(-9) M respectively. Moreover, the proposed sensor demonstrated excellent applicability when tested for chlorpyrifos from vegetable extracts using a standard addition method. (c) 2018 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.snb.2018.01.084en_US
dc.identifier.endpage489en_US
dc.identifier.issn0925-4005en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage480en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.snb.2018.01.084
dc.identifier.urihttps://hdl.handle.net/20.500.12395/36649
dc.identifier.volume260en_US
dc.identifier.wosWOS:000424884300058en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE SAen_US
dc.relation.ispartofSENSORS AND ACTUATORS B-CHEMICALen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectPesticidesen_US
dc.subjectITO electrodesen_US
dc.subjectIn-situ growthen_US
dc.subjectInhibition sensoren_US
dc.titleFunctionalised CuO nanostructures for the detection of organophosphorus pesticides: A non-enzymatic inhibition approach coupled with nano-scale electrode engineering to improve electrode sensitivityen_US
dc.typeArticleen_US

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