Sensitive Flow-Injection Electrochemical Determination of Hydrogen Peroxide at a Palladium Nanoparticle-Modified Pencil Graphite Electrode

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dc.authoridKarakaya, Serkan/0000-0002-6401-3295
dc.contributor.authorKarakaya, Serkan
dc.contributor.authorDilgin, Yusuf
dc.date.accessioned2025-01-27T21:05:28Z
dc.date.available2025-01-27T21:05:28Z
dc.date.issued2019
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractA novel flow-injection amperometric method was proposed for the sensitive and enzymeless determination of hydrogen peroxide based on its electrocatalytic reduction at a palladium nanoparticle-modified pretreated pencil graphite electrode in a laboratory-constructed electrochemical flow cell. Cyclic voltammograms of the unmodified and modified electrodes were recorded in pH 7.0 phosphate buffer containing 0.10 M KCl at a scan rate of 50mV s(-1) for the investigation of electrocatalytic reduction of hydrogen peroxide at the palladium nanoparticle-modified pretreated pencil graphite electrode. Cyclic voltammograms of the pretreated pencil graphite electrode revealed an irreversible oxidation peak and a weak reduction peak of hydrogen peroxide at +1100mV and -450mV vs. an Ag/AgCl/KCl saturated reference electrode. However, the reduction of hydrogen peroxide was observed at -100mV with an increase in current in the cyclic voltammograms of the palladium nanoparticle-modified pretreated pencil graphite electrode compared to the unmodified electrode. These results indicate that the palladium nanoparticle-modified pretreated pencil graphite electrode exhibits efficient electrocatalytic activity for the reduction of hydrogen peroxide. A linear concentration range was obtained between .01 and 10.0mM hydrogen peroxide with a detection limit of 3.0 mu M from flow injection amperometric current-time curves recorded in pH 7.0 phosphate buffer at -100mV and a 2.0mL min(-1) flow rate. The novelty of this work relies on its use of a laboratory-constructed flow cell constructed for the pencil graphite electrode using these inexpensive, disposable, and electrochemically reactive modified electrodes for the amperometric determination of hydrogen peroxide in a flow injection analysis system.
dc.description.sponsorshipAcademic Training Program (OYP); Scientific and Technological Research Council of Turkey (TUBITAK)
dc.description.sponsorshipSerkan Karakaya would like to express gratitude to the Academic Training Program (OYP) for the financial support and the Scientific and Technological Research Council of Turkey (TUBITAK) for the scholarship.
dc.identifier.doi10.1080/00032719.2018.1509986
dc.identifier.endpage1017
dc.identifier.issn0003-2719
dc.identifier.issn1532-236X
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85055553850
dc.identifier.scopusqualityQ2
dc.identifier.startpage998
dc.identifier.urihttps://doi.org/10.1080/00032719.2018.1509986
dc.identifier.urihttps://hdl.handle.net/20.500.12428/27662
dc.identifier.volume52
dc.identifier.wosWOS:000461611200010
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor & Francis Inc
dc.relation.ispartofAnalytical Letters
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectAmperometry
dc.subjectflow injection analysis
dc.subjecthydrogen peroxide
dc.subjectpalladium nanoparticles
dc.subjectpencil graphite electrode
dc.titleSensitive Flow-Injection Electrochemical Determination of Hydrogen Peroxide at a Palladium Nanoparticle-Modified Pencil Graphite Electrode
dc.typeArticle

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