The use of CeO2-modified Pt/C catalyst inks for the construction of high-performance enzyme-free H2O2 sensors

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dc.contributor.authorUzunoglu, Aytekin
dc.contributor.authorIpekci, Hasan Huseyin
dc.date.accessioned2024-02-23T14:12:46Z
dc.date.available2024-02-23T14:12:46Z
dc.date.issued2019
dc.departmentNEÜen_US
dc.description.abstractIn this work, the development of novel enzyme-free electrochemical hydrogen peroxide (H2O2) sensors with high sensitivity and wide linear range is described. The electrochemical sensors were constructed by the physical modification of commercial Pt/C catalysts with CeO2 metal oxide nanoparticles. X-ray diffraction (XRD), transmission electron microscopy (TEM), N-2-adsorption, and Raman spectroscopy methods were used to characterize the metal oxide nanoparticles. The CeO2 particles showed fluorite-type structure with the average crystalline size of 13.8 nm. Furthermore, the Raman spectroscopy results indicated the presence of high degree of oxygen defects indicating the high redox property of the nanoparticles. The physical surface area of the metal oxide nanoparticles was determined to be 68.8 m(2)g(-1). The catalyst inks were prepared by mixing commercial Pt/C and CeO2 nanoparticles with different weight ratios. The analytical performance of the sensors was studied using cyclic voltammetry (CV) and chronoamperometry (CA) methods. The results revealed that the introduction of CeO2 nanoparticles into the catalyst layer improved the sensor performance significantly compared to Pt/C sensors. A high sensitivity of 185.4 +/- 6.5 mu A mM(-1)cm(-2) was obtained from CeO2-modified sensors in a wide linear range of 0.01-30 mM. Depending on the obtained results it can be suggested that the novel sensor design holds a great promise for the construction of electrochemical sensors with high sensitivity, selectivity, and wide working window.en_US
dc.description.sponsorshipResearch Fund of the Necmettin Erbakan University [181719002]en_US
dc.description.sponsorshipThe authors acknowledge the partial financial support provided by Research Fund of the Necmettin Erbakan University under the project number of 181719002.en_US
dc.identifier.doi10.1016/j.jelechem.2019.113302
dc.identifier.issn1572-6657
dc.identifier.issn1873-2569
dc.identifier.scopus2-s2.0-85069595317en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.jelechem.2019.113302
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12175
dc.identifier.volume848en_US
dc.identifier.wosWOS:000504505400033en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofJournal Of Electroanalytical Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPlatinumen_US
dc.subjectCarbonen_US
dc.subjectCeo2en_US
dc.subjectElectrochemical Sensoren_US
dc.subjectH2o2en_US
dc.subjectHigh Performanceen_US
dc.titleThe use of CeO2-modified Pt/C catalyst inks for the construction of high-performance enzyme-free H2O2 sensorsen_US
dc.typeArticleen_US

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