Photoamperometric flow injection analysis of glucose based on dehydrogenase modified quantum dots-carbon nanotube nanocomposite electrode

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dc.authoridDilgin, Yusuf/0000-0002-2980-6871
dc.contributor.authorErtek, Bensu
dc.contributor.authorDilgin, Yusuf
dc.date.accessioned2025-01-27T20:20:16Z
dc.date.available2025-01-27T20:20:16Z
dc.date.issued2016
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn this work, a core-shell quantum dot (QD, ZnS-CdS) was electrodeposited onto multiwalled carbon nano tube modified glassy carbon electrode (ZnS-CdS/MWCNT/GCE) and following glucose dehydrogenase (GDH) was immobilized onto QD modified electrode. The proposed electrode (GDH/ZnS-CdS/MWCNT/ GCE) was effectively used for the photoelectrochemical biosensing of glucose in flow injection analysis (FIA) system using a home-made flow cell. Results from cyclic voltammetric and FI amperometric measurements have revealed that GDH/ZnS-CdS/MWCNT/GCE is capable of signaling photoelectrocatalytic activity toward NADH when the surface of enzyme modified electrode was irradiated with a light source (250W Halogen lamp). Thus, photoelectrochemical biosensing of glucose was monitored by recording current-time curve of enzymatically produced NADH at optimized conditions. The biosensor response was found linear over the range 0.010-2.0 mM glucose with detection limits of 6.0 and 4.0 mu M for amperometric and photoamperometric methods, respectively. The relative standard deviations (n = 5) for 0.5 mM glucose were 5.8% and 3.8% for photoamperometric and amperometric results, respectively. The photoelectrochemical biosensor was successfully applied to the real samples. The results with this biosensor showed good selectivity, repeatability and sensitivity for monitoring glucose in amperometric and photoamperometric HA studies. (C) 2016 Elsevier B.V. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [112T375]
dc.description.sponsorshipWe thank the The Scientific and Technological Research Council of Turkey (TUBITAK) for financial support (Project number: 112T375).
dc.identifier.doi10.1016/j.bioelechem.2016.02.008
dc.identifier.endpage144
dc.identifier.issn1567-5394
dc.identifier.issn1878-562X
dc.identifier.pmid26944347
dc.identifier.scopus2-s2.0-84959422129
dc.identifier.scopusqualityQ1
dc.identifier.startpage138
dc.identifier.urihttps://doi.org/10.1016/j.bioelechem.2016.02.008
dc.identifier.urihttps://hdl.handle.net/20.500.12428/21643
dc.identifier.volume112
dc.identifier.wosWOS:000383523800018
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.ispartofBioelectrochemistry
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectGlucose dehydrogenase
dc.subjectZnS-CdS quantum dots
dc.subjectFlow injection analysis
dc.subjectPhotoelectrochemical biosensor
dc.subjectNADH
dc.subjectMultiwalled carbon nanotube
dc.titlePhotoamperometric flow injection analysis of glucose based on dehydrogenase modified quantum dots-carbon nanotube nanocomposite electrode
dc.typeArticle

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