A Highly Sensitive Ascorbic Acid Sensor Based on Graphene Oxide/CdTe Quantum Dots-Modified Glassy Carbon Electrode

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dc.contributor.authorKucukkolbasi, S.
dc.contributor.authorErdogan, Z. O.
dc.contributor.authorBaslak, C.
dc.contributor.authorSogut, D.
dc.contributor.authorKus, M.
dc.date.accessioned2020-03-26T20:12:18Z
dc.date.available2020-03-26T20:12:18Z
dc.date.issued2019
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractQuantum dots (QDs) and graphene oxide (GO) are extremely attractive and important nanomaterials in analytical applications because of their their unusual chemical, physical and electronic properties. In this work, CdTe QDs with the size of about 3 nm were prepared and a novel electrochemical sensing material of ascorbic acid on GO/CdTe QDs/GC electrode was explored. Transmission electron microscopy (TEM) was used to examine the morphological characterization of CdTe QDs and cyclic voltammetry (CV) and electrochemical impedance spectroscopy were used to perform the electrochemical investigations of the GO/CdTe QDs/GC electrode. Because of the synergy between the CdTe QDs and GO, this novel sensing based on CdTe QDs/GO/GC electrode responded even more sensitively and selectively than that based on bare GC electrode. Effects of pH value, buffer concentration, deposition potential and deposition time and electroactive interferents on the response of GO/CdTe QDs/GC electrode for ascorbic acid sensor were discussed. Under optimum working conditions, a linear response of the modified electrode was obtained over the concentration range of 32.3-500.0 mu M with the detection limit of 6.1 mu M for ascorbic acid. Finally, the inexpensive, reliable and sensitive modified electrode based on GO/CdTe QDs/GC was succesfully applied for the determination of ascorbic acid in citrus samples.en_US
dc.description.sponsorshipSelcuk UniversitySelcuk University [BAP-12201026, BAP-16201004, BAP-15401113]en_US
dc.description.sponsorshipThis study was carried out within the frames of Interest Zehra Ozden Erdogan financial support provided by the Selcuk University Coordination Scientific Research Projects BAP-12201026 and, Semahat Kucukkolbasi and Dilek Sogut has received financial support provided by the Selcuk University Coordination Scientific Research Projects BAP-16201004. Canan Baslak declares that financial support was provided by the Selcuk University Coordination Scientific Research Projects BAP-15401113 for this work. The authors thank to Selcuk University Coordination Scientific Research Projects.en_US
dc.identifier.doi10.1134/S1023193519010051en_US
dc.identifier.endpage114en_US
dc.identifier.issn1023-1935en_US
dc.identifier.issn1608-3342en_US
dc.identifier.issue2en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage107en_US
dc.identifier.urihttps://dx.doi.org/10.1134/S1023193519010051
dc.identifier.urihttps://hdl.handle.net/20.500.12395/37413
dc.identifier.volume55en_US
dc.identifier.wosWOS:000466507300006en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPLEIADES PUBLISHING INCen_US
dc.relation.ispartofRUSSIAN JOURNAL OF ELECTROCHEMISTRYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectquantum dotsen_US
dc.subjectascorbic aciden_US
dc.subjectchemically modified electrodesen_US
dc.subjectgraphene oxideen_US
dc.subjectelectrochemical sensoren_US
dc.titleA Highly Sensitive Ascorbic Acid Sensor Based on Graphene Oxide/CdTe Quantum Dots-Modified Glassy Carbon Electrodeen_US
dc.typeArticleen_US

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