Microwave-assisted synthesis of PtAu@C based bimetallic nanocatalysts for non-enzymatic H2O2 sensor

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dc.contributor.authorSahin, Ozlem Gokdogan
dc.date.accessioned2020-03-26T19:06:20Z
dc.date.available2020-03-26T19:06:20Z
dc.date.issued2015
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractA simple and effective strategy was developed to construct an amperometric sensor for hydrogen peroxide (H2O2) detection based on microwave-assisted polyol synthesis of PtAu@C nanocatalysts. The structures and characterization of bimetallic catalysts were examined via X-ray diffraction (XRD), X-ray photo electron spectroscopy (XPS), and Transmission electron microscopy (TEM). The catalytic activities of PtAu@C nanocatalysts at different compositions (Pt@C, Pt0.4Au0.68C Pt0.5Au0.5@C, Pt0.7Au0.3@C, Pt0.9Au0.1@C, Au@C) for the electro-oxidation of H2O2 have been investigated by using cyclic voltammetry (CV). It was observed that the electrocatalytic performance was strongly dependent on the PtAu@C nanocatalyst composition. Pt0.5Au0.5@C modified electrode showed the highest sensitivity toward hydrogen peroxide among the catalysts under study. Therefore, further studies performed by chronoamperometry for Pt0.5Au0.5@C optimized ratio catalyst. Electrochemical measurements indicated that the oxidation current of H2O2 is linear between the cohcentrations 7 mu M and 6.5 mM with high sensitivity of 210.3 mu A mM(-1) cm(-2). Pt0.5Au0.5@C modified electrode exhibited good reproducibility, selectivity and stability. Meanwhile, the sensitivity of the H2O2 sensor for real sample was investigated in pasteurized milk and the obtained results were satisfactory. Thus, the prepared non-enzyme sensor has potential application in H2O2 detection. (C) 2015 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipSelcuk UniversitySelcuk University [11401131]; Scientific Research Projects Coordination Unit (BAP)en_US
dc.description.sponsorshipCHI 6043d electrochemical workstation employed in electrochemical measurements was purchased from Selcuk University scientific research project (project number: 11401131). The author acknowledge to the Scientific Research Projects Coordination Unit (BAP) for the financial support.en_US
dc.identifier.doi10.1016/j.electacta.2015.09.015en_US
dc.identifier.endpage878en_US
dc.identifier.issn0013-4686en_US
dc.identifier.issn1873-3859en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage873en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.electacta.2015.09.015
dc.identifier.urihttps://hdl.handle.net/20.500.12395/32325
dc.identifier.volume180en_US
dc.identifier.wosWOS:000363345100105en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDen_US
dc.relation.ispartofELECTROCHIMICA ACTAen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectHydrogen peroxideen_US
dc.subjectmicrowave-assisted polyol methoden_US
dc.subjectnon-enzymaticen_US
dc.subjectbimetallic nanocatalystsen_US
dc.subjectplatinumen_US
dc.titleMicrowave-assisted synthesis of PtAu@C based bimetallic nanocatalysts for non-enzymatic H2O2 sensoren_US
dc.typeArticleen_US

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