A novel voltammetric sensor based on p-aminothiophenol functionalized graphene oxide/gold nanoparticles for determining quercetin in the presence of ascorbic acid

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dc.authoridAtar, Necip/0000-0001-8779-1412
dc.authoridUstundag, Zafer/0000-0002-5550-106X
dc.contributor.authorYola, Mehmet Lutfi
dc.contributor.authorAtar, Necip
dc.contributor.authorUstundag, Zafer
dc.contributor.authorSolak, Ali Osman
dc.date.accessioned2025-03-23T19:41:13Z
dc.date.available2025-03-23T19:41:13Z
dc.date.issued2013
dc.departmentSinop Üniversitesi
dc.description.abstractIn this study, gold nanoparticles (AuNPs) with the diameters of maximum 25 nm were self-assembled onto the surfaces of p-aminothiophenol functionalized graphene oxide (ATPGO) sheets simply by mixing their aqueous dispersions. The prepared graphene oxide (GO), ATPGO and AuNPs-ATPGO composites were characterized by a transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), reflection-absorption infrared spectroscopy (RAIRS), the X-ray diffraction (XRD) method and Raman spectroscopy. The electrochemical determination of quercetin (QR) has been studied using square wave voltammetry (SWV) on glassy, carbon electrode (GCE) modified with AuNPs-ATPGO composite (AuNPs-ATPGO/GCE). QR gave rise to a single oxidation peak in the potential interval from 200 to 600 mV in 0.1 M acetate buffer (pH 5.5). The well-defined peaks were observed at the optimized instrumental parameters for SWV such as frequency, amplitude and potential increments. The developed method was validated according to the ICH guideline and found to be linear, sensitive, specific, precise and accurate. The linearity range of QR was 1.0 x 10(-12)-1.0 x 10(-11) M with the detection limit (S/N = 3) of 3.0 x 10(-13) M under optimum conditions. The validated method was applied successfully for the determination of QR in pharmaceutical preparations. (C) 2013 Elsevier B.V. All rights reserved.
dc.identifier.doi10.1016/j.jelechem.2013.03.016
dc.identifier.endpage16
dc.identifier.issn1572-6657
dc.identifier.issn1873-2569
dc.identifier.scopus2-s2.0-84876581059
dc.identifier.scopusqualityQ1
dc.identifier.startpage9
dc.identifier.urihttps://doi.org/10.1016/j.jelechem.2013.03.016
dc.identifier.urihttps://hdl.handle.net/11486/6524
dc.identifier.volume698
dc.identifier.wosWOS:000319957200002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.ispartofJournal of Electroanalytical Chemistry
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectQuercetin
dc.subjectGraphene oxide
dc.subjectGold nanoparticles
dc.subjectSquare wave voltammetry
dc.subjectValidation
dc.titleA novel voltammetric sensor based on p-aminothiophenol functionalized graphene oxide/gold nanoparticles for determining quercetin in the presence of ascorbic acid
dc.typeArticle

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