Yazar "Anık, Ülkü" için listeleme
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Centri-Voltammetric GSH Detection with PDI-C4SH as a Carrier Material
Perk, Benay; Büyüksünetçi Tepeli, Yudum; Haklı, Özgül; Xue, Chenming; Li, Quan; Anık, Ülkü (John Wiley and Sons Inc, 2021)In this study, we developed a centri-voltammetric electrochemical sensor for glutathione (GSH) detection. For this purpose, N,N′-2-octyloxy-1-methyl-2-oxoethyl)-(-2,4-thiolbutyloxy)-1-methyl-2-oxoethyl)-3,4 : 9,10-peryle ... -
Centri-voltammetry and biocentri-voltammetry: a review
Anık, Ülkü (Springer Wien, 2013)Centri-voltammetry and biocentri-voltammetry are techniques that combine centrifugation with voltammetry. This review covers (a) definitions; (b) experimental (cell) configurations; (c) effects of centrifugation parameters; ... -
Centri-voltammetry for biosensing systems: biocentri-voltammetric xanthine detection
Anık, Ülkü; Cevik, Serdar (Springer Wien, 2011)Centri-voltammetry is a method that combines centrifugation and voltammetry. This method, developed by our group in 2003, yielded promising results when applied to trace analysis of metal ios. We demonstrate here the first ... -
Combination of a poly(3,4-ethylene-dioxythiophene) electrode in the presence of sodium dodecyl sulfate with centri-voltammetry
Tepeli, Yudum; Aslan, Sema; Sezer, Esma; Anık, Ülkü (Royal Soc Chemistry, 2015)A poly(3,4-ethylene-dioxythiophene) (PEDOT) electrode was prepared by electropolymerization of 3,4-ethylene-dioxythiophene (EDOT) in the presence of sodium dodecyl sulfate (SDS). The electrode was combined with centri-voltammetry ... -
Comparison of in uence of nanomaterials on a glassy carbon pasteelectrode-based bioanode in biofuel cells
Aslan, Sema; Tutum, Murat; Tepeli, Yudum; Anık, Ülkü (2016)This paper presents a comparative study of nanomaterial modi ed glassy carbon paste electrodes (GCPEs)used as bioanodes in enzymatic biofuel cells. The developed bioanode electrodes were obtained by modi cation ofcomposite ... -
Comparison of influence of nanomaterials on a glassy carbon paste electrode-based bioanode in biofuel cells
Aslan, Sema; Tutum, Murat; Tepeli, Yudum; Anık, Ülkü (Scientific Technical Research Council Turkey-Tubitak, 2016)This paper presents a comparative study of nanomaterial modified glassy carbon paste electrodes (GCPEs) used as bioanodes in enzymatic biofuel cells. The developed bioanode electrodes were obtained by modification of ... -
Comparison of performances of bioanodes modified with graphene oxide and graphene-platinum hybrid nanoparticles
Tepeli, Yudum; Anık, Ülkü (Elsevier Science Inc, 2015)The performances of graphene oxide (GO) and graphene-platinum hybrid nanoparticles (Gr-Pt hybrid NPs) were compared for biofuel cell (BFC) systems. This is the first study that constitutes these nanomaterials in BFC systems. ... -
Copper based metal organic framework decorated with gold nanoparticles as a new electrochemical sensor material for the detection of L-Cysteine in milk samples
Perk, Benay; Tepeli-Büyüksünetci, Yudum; Anık, Ülkü (Springer, 2023)A facile electrochemical sensor based on carbon felt electrode (CFE) modified with gold nanoparticles decorated copper based metal organic framework (AuNPs@Cu-MOF) was achieved for the electrochemical sensing of L-Cysteine ... -
Development and application of a SARS-CoV-2 colorimetric biosensor based on the peroxidase-mimic activity of γ-Fe 2 O 3 nanoparticles
Tepeli Büyüksünetçi, Yudum; Çitil, Burak Ekrem; Tapan, Utku; Anık, Ülkü (Springer, 2021)A practical colorimetric assay was developed for the detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). For this purpose, magnetic γ Fe2O3 nanoparticles were synthesized and used as a peroxidase-like ... -
Development of a Bioanode for Microbial Fuel Cells Based on the Combination of a MWCNT-Au-Pt Hybrid Nanomaterial, an Osmium Redox Polymer and Gluconobacter oxydans DSM 2343 Cells
Aslan, Sema; O Conghaile, Peter; Leech, Donal; Gorton, Lo; Timur, Suna; Anık, Ülkü (Wiley-V C H Verlag Gmbh, 2017)In this work, a carbon felt electrode (CFE) was modified with a multiwalled carbon nanotube-gold-platinum (MWCNT-Au-Pt) hybrid nanomaterial and integrated with an osmium redox polymer (OsRP, [Os(2,2'-bipyridine)(2)(poly- ... -
Development of a microbial biosensor based on carbon nanotube (CNT) modified electrodes
Timur, Suna; Anık, Ülkü; Odacı, Dilek; Gorton, Lo (Elsevier Science Inc, 2007)Pseudomonas putida DSM 50026 cells were used as the biological component and the measurement was based on the respiratory activity of the cells estimated from electrochemical measurements. The cells were immobilised on ... -
Development of a Sandwich Immunosensor for concurrent detection of carcinoembryonic antigen (CEA), vascular endothelial growth factor (VEGF) and alpha-fetoprotein (AFP) biomarkers
Kalyoncu, Dorukhan; Buyuksunetci, Yudum Tepeli; Anık, Ülkü (Elsevier Science Bv, 2019)Cancer Biomarkers are important biological molecules which provide early detection, diagnosis and classification of cancer cells. In this work, nanoparticle tags with different redox potentials have been used as an ... -
Development of an Osmium Redox Polymer Mediated Bioanode and Examination of its Performance in Gluconobacter oxydans Based Microbial Fuel Cell
Aslan, Sema; Conghaile, Peter O.; Leech, Donal; Gorton, Lo; Timur, Suna; Anık, Ülkü (Wiley-V C H Verlag Gmbh, 2017)Gluconobacter oxydans (G. oxydans) cells together with an osmium redox polymer (ORP) [Osmium (2,2'-bipyridine) 2(poly-vinylimidazole) 10Cl] Cl were combined with a glassy carbon paste electrode (GCPE) to form a bioanode ... -
Development of Practical Electrochemical System for Phenytoin Detection
Dogan, Tansu; Anık, Ülkü; Dursun, Zekerya (Wiley-V C H Verlag Gmbh, 2019)In this work a practical electrochemical approach has been developed by using gold (Au)-film electrode for phenytoin detection. The formation of Au-film was monitored by using scanning electron microscopy, energy dispersive ... -
Development of TiO2 and Au Nanocomposite Electrode as CEA Immunosensor Transducer
Aslan, Sema; Anık, Ülkü (Wiley-V C H Verlag Gmbh, 2014)A carbon paste electrode (CPE) was modified by titanium(IV) oxide microparticles and then gold nanoparticles were dispersed in chitosan and immobilized on the CPE surface. As result a nanostructure modified composite ... -
Double-walled carbon nanotube based carbon paste electrode as xanthine biosensor
Anık, Ülkü; Çevik, Serdar (Springer Wien, 2009)We describe the first usage of a double walled carbon nanotube (DWCNT) modified carbon paste electrode as biosensor transducer. Xanthine was chosen as a substrate for evaluation of the electrode performance. Proper amount ... -
Effect of Nitric Acid "Washing" Procedure on Electrochemical Behavior of Carbon Nanotubes and Glassy Carbon mu-Particles
Anık, Ülkü; Cevik, Serdar; Pumera, Martin (Springeropen, 2010)The electroanalytic performances of glassy carbon paste electrode (GCPE), multi-walled carbon nanotube (MWCNT)-GCPE and double-walled carbon nanotube (DWCNT)-GCPE, which include HNO3 washed/unwashed materials, were compared ... -
An effective electrochemical biosensing platform for the detection of reduced glutathione
Anık, Ülkü; Cubukcu, Meliha; Ertas, F. Nil (Taylor & Francis Ltd, 2016)A biosensor was developed using glutathione peroxidase (GSH-Px) as the enzyme. Firstly, platinum (Pt) nanoparticles were deposited onto a glassy carbon paste electrode (GCPE), and then GSH-Px was immobilized by means of ... -
Effects of mediators on the laccase biosensor response in paracetamol detection
Odaci, Dilek; Timur, Suna; Pazarlioglu, Nurdan; Anık, Ülkü; Telefoncu, Azmi (Wiley, 2006)An enzyme electrode suitable for paracetamol detection was developed by immobilizing laccase on a dissolved-oxygen probe surface. The immobilization procedure was achieved by means of gelatin, which was then cross-linked ...