Ali Osman SOLAK
Mühendislik Fakültesi

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Durum	Çalışmıyor
Ünvan	Prof. Dr.
YÖK Araştırmacı Numarası

Atıf Dağılımları

Axsis Yayın Dağılımı 47

Optimization by Using the Taguchi Method of Boric Acid Production by Dissolving Flash Calcined Colemanite in Water Saturated with SO2

Ali Osman SOLAKTurkey has the largest boron reserves in the world with a rate of approximately 72. The most common commercial boron reserves in Turkey are colemanite, tincal, and ulexite. Boric acid, which is the most commonly used boron compound in Turkey, is obtained from the dissolution of colemanite with sulfuric acid. In the present study, an aqueous medium saturated with sulfur dioxide instead of sulfuric acid was used in order to obtain boric acid. Colemanite ore was flash calcined at various temperatures and optimum dissolution conditions of the ore o ...Daha fazlası Makale2023Iranian Journal of Chemistry and Chemical Engineering (IJCCE)Iranian Institute of Research and Development in Chemical Industries17 Görüntülenme

Carbonaceous Materials-12: a Novel Highly Sensitive Graphene Oxide-Based Carbon Electrode: Preparation, Characterization, and Heavy Metal Analysis in Food Samples

Ali Osman SOLAKGraphene oxide (GO) was covalently attached to glassy carbon (GC) electrode (GC–O–GO) for fabricating nanosensors to determine trace Pb2+ and Cd2+ using differential pulse anodic stripping voltammetry (DPASV). Surface characterization of the nanofilm-covered electrode was performed via electrochemical cyclic voltammetry (CV), transmission electron microscopy (TEM), atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS) techniques. Surface pKa of the GO covalent attached GC (GC–O–GO) was calculated via CV. Under optimal condit ...Daha fazlası Makale2016Food Analytical MethodsSpringer59 Görüntülenme

3,8-Diaminobenzo[c]Cinnoline Derivatived Graphene Oxide Modified Graphene Oxide Sensor for the Voltammetric Determination of Cd2+ and Pb2+

Ali Osman SOLAKHighly sensitive 3,8-diaminobenzo[c]cinnoline (3,8-DABCC) modified graphene oxide (GO) electrode was prepared, and it was denoted as pGO-DABCC. The electrode material was characterized with infrared spectroscopy (IR), X-ray photoelectron spectroscopy (XPS), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). pGO-DABCC on glassy carbon (GC/pGO-DABCC) electrode was investigated for simultaneous determination of Cd2+ and Pb2+ in aqueous media by differential pulse anodic stripping voltammetry (DPASV). Optimum conditions of t ...Daha fazlası Makale2016ElectrocatalysisSpringer56 Görüntülenme

Fabrication of an Electrochemical E. coli Biosensor in Biowells Using Bimetallic Nanoparticle-Labelled Antibodies

Ali Osman SOLAKAn electrochemical biosensor was developed for the determination of Escherichia coli (E. coli) in water. For this purpose, silver-gold core-shell (Ag@Au) bioconjugates and anti-E. coli modified PS-microwells were designed in a sandwich-type format in order to obtain higher sensitivity and selectivity. Ag@Au bimetallic nanoparticles were synthesized by co-reduction method. The core-shell formation was analyzed by using UV-Vis spectroscopy and transmission electron microscopy. Biotin labeled anti-E. coli antibodies were coupled with Ag@Au nanopar ...Daha fazlası Makale2015ElectroanalysisWiley32 Görüntülenme

Phosphorus-nitrogen compounds: part 30. Syntheses and structural investigations, antimicrobial and cytotoxic activities and DNA interactions of vanillinato-substituted NN or NO spirocyclic monoferrocenyl cyclotriphosphazenes

Ali Osman SOLAKThe gradual Cl replacement reactions of NN (1–3) or NO spirocyclic monoferrocenyl cyclotriphosphazenes (4 and 5) with the potassium salt of 4-hydroxy-3-methoxybenzaldehyde (potassium vanillinate) resulted in the mono (1a–5a), geminal (gem-1b–5b), non-geminal (cis-5b and trans -1b–4b), tri (1c, 3c–5c) and tetra-vanillinato-substituted phosphazenes (1d–5d). All the phosphazene derivatives have stereogenic P-center(s), except tetra-substituted ones. The vanillinatophosphazenes have reversible voltammograms with one-electron anodic and cathodic pea ...Daha fazlası Makale2015JBIC : Journal of Biological Inorganic ChemistrySpringer80 Görüntülenme

Evaluation of Some Redox Mediators in the Design of Reagentless Amperometric Glucose Biosensor

Ali Osman SOLAKThe influence of redox mediators (tetrathiafulvalene (TTF), tetrathiafulvalene-tetracyanoquinodimethane complex (TTF-TCNQ), phenazine methosulfate (PMS), 5,6-diamino-1,10-phenonthroline (5,6-DAP), potassium ferrocyanide (K4[Fe(CN)6]), methylene blue (MB) and toluidine blue (TB)) on the response of amperometric glucose biosensor was investigated in this research. Graphite rod electrode (GRE) modified by adsorbed mediator and glucose oxidase (GOx) cross-linked with glutaraldehyde was served as working electrode. The highest amperometric signals w ...Daha fazlası Makale2014ElectroanalysisWiley70 Görüntülenme

Electrochemical studies on graphene oxide-supported metallic and bimetallic nanoparticles for fuel cell applications

Ali Osman SOLAKA fuel cell is an electrochemical cell that converts a source fuel into an electrical current. It generates electricity inside a cell through reactions between a fuel and an oxidant, triggered in the presence of an electrolyte. Fuel cells have been attracting more and more attention in recent decades due to high-energy demands, fossil fuel depletions, and environmental pollution throughout world. In this study, different sized metallic and bimetallic nanoparticles (AuNPs, Fe@AuNPs, Ag@AuNPs) were synthesized on graphene oxide sheets and their e ...Daha fazlası Makale2014Journal of Molecular LiquidsElsevier62 Görüntülenme

Electrografting and Surface Properties of Some Substituted Nitrophenols on Glassy Carbon Electrode and Simultaneous Pb2+ - Cd2+ Analysis via Assist of Graphene Oxide Terminated Surface

Ali Osman SOLAKA new electrode was prepared by the electrooxidation of orto-, meta-, and para-substituted nitro phenols on glassy carbon electrode. Electrochemical modification of the electrodes was carried out in 0.01 M HCl using cyclic voltammetry (CV). Then nitro groups in the covalently grafted nitro phenol derivatives on GC electrode were reduced to amine groups in 0.01 M HCl. The electrochemical behavior of the modified electrodes was studied in the presence of electroactive redox probes such as ferrocene and ferricyanide by CV and electrochemical imped ...Daha fazlası Makale2014Journal of The Electrochemical SocietyElectrochemical Society Inc51 Görüntülenme

Surface pKa determination of benzoic acid modified gold electrode by electrochemical and contact angle measurement methods

Sebahattin BALCI Ali Osman SOLAKpKa values of the organic surfaces were determined with ionizable carboxylic acid groups, obtained by the modification of gold electrode by reduction of p-benzoic acid diazonium tetrafluoroborate and oxidation of p-aminobenzoic acid. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques were used in the surface pKa determination, by exploiting the barrier effect arising from the charged nature of the surface against the electrochemistry of Fe(CN)64-/3- redox probe. Contact angle measurement (CAM) technique was also ...Daha fazlası Makale2014MANAS Journal of Engineering (MJEN)Kyrgyz - Turkish Manas University112 Görüntülenme

Reduction Mechanism Investigation Of Some Schiff Base Podand Derivatives At Glassy Carbon Electrode By Using Electrochemical Techniques

Ali Osman SOLAKElectrochemical reduction mechanism of some salicylaldimine podands derived from salicylaldehyde and diamines having general formula of HO-C6H4-CH=N-R-N=CH-C6H4-OH [R = ‒, (CH2)6, (CH2CH2)2NH, (CH2CH2OCH2)2], namely N,N’-bis(salicylidene)-diamine (BSA), N,N’-bis(salicylidene)-1,6-hexanediamine (BSH), 1,7-bis(2-hydroxybenzyl)-1,4,7-triazaheptane (BST), 1,10-bis(2-hydroxybenzyl)-4,7-dioxa–1,10-diazadecane (BDD), respectively, were investigated by using various electrochemical techniques in 0.1 M tetrabutylammonium tetrafluoroborate (TBATFB) in ac ...Daha fazlası Makale2014MANAS Journal of Engineering (MJEN)Kyrgyz - Turkish Manas University74 Görüntülenme

New Voltammetric Approach to the Quantitative Estimation of Sildenafil Citrate in Tablets Using Disposable Pencil Graphite Electrode

Ali Osman SOLAKThe voltammetric behavior of sildenafil citrate (SC) was studied through differential pulse stripping voltammetry. The best sensitivity, optimal experimental conditions and settings for the voltammetric method development were obtained by applying experimental design and optimization methodology to the designed sample runs at different accumulation times, accumulation potentials and pHs. The linearity over the concentration range 1 × 10–7 M–8 × 10–6 M for SC was determined and the limit of detection (LOD) was 3.1 × 10–8 M. For the method abilit ...Daha fazlası Makale2014Sensor LettersAmerican Scientific Publishers36 Görüntülenme

Synthesis, characterization, and application of silver nanoparticle-thiophenol nanocomposite film on the glassy carbon surface

Ali Osman SOLAKIn this study, 4-thiophenol modified glassy carbon electrode was prepared by the reduction of 4-diazothiophenol tetrafluoroborate salt. Silver nanoparticles were attached to the thiophenol modified surface to prepare a thiophenol-silver nanoparticle composite film. 4-Aminothiopenol molecules were deposited by self-assembling technique to form multi-layered nanofilms of TP/SNP/PhNH2 on glassy carbon substrate. These surfaces were characterized by cyclic voltammetry, electrochemical impedance spectroscopy, X-ray photoelectron spectroscopy, reflec ...Daha fazlası Makale2013Surface and Interface AnalysisWiley44 Görüntülenme

Biofuel Cell Based on Anode and Cathode Modified by Glucose Oxidase

Ali Osman SOLAKA single compartment biofuel cell (BFC) based on an anode and a cathode powered by the same fuel glucose is reported. Glucose oxidase (GOx) from Aspergillus niger was applied as a glucose consuming biocatalyst for both anode and cathode of the BFC. The 5-amino-1,10-phenanthroline modified graphite rod electrode (GRE) with cross-linked GOx was used as the bioanode, and the GRE with co-immobilised horseradish peroxidase and GOx was exploited as the biocathode of the BFC. The open-circuit voltage of the designed BFC exceeded 450 mV and a maximal p ...Daha fazlası Makale2013ElectroanalysisWiley123 Görüntülenme

Electrochemically modified sulfisoxazole nanofilm on glassy carbon for determination of cadmium(II) in water samples

Ali Osman SOLAKSulfisoxazole (SO) was grafted to glassy carbon electrode (GCE) via the electrochemical oxidation of SO in acetonitrile solution containing 0.1 M tetrabutylammoniumtetra-fluoroborate (TBATFB). The prepared electrode was characterized by using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), reflection–absorption infrared spectroscopy (RAIRS) and X-ray photoelectron spectroscopy (XPS). The ellipsometric thickness of SO nanofilm at the glassy carbon surface was obtained as 14.48 ± 0.11 nm. The stability of the SO modified GC ...Daha fazlası Makale2013Electrochimica ActaElsevier63 Görüntülenme

A novel voltammetric sensor based on p-aminothiophenol functionalized graphene oxide/gold nanoparticles for determining quercetin in the presence of ascorbic acid

Ali Osman SOLAKIn this study, gold nanoparticles (AuNPs) with the diameters of maximum 25 nm were self-assembled onto the surfaces of p-aminothiophenol functionalized graphene oxide (ATPGO) sheets simply by mixing their aqueous dispersions. The prepared graphene oxide (GO), ATPGO and AuNPs–ATPGO composites were characterized by a transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), reflection–absorption infrared spectroscopy (RAIRS), the X-ray diffraction (XRD) method and Raman spectroscopy. The electrochemical determination of quer ...Daha fazlası Makale2013Journal of Electroanalytical ChemistryElsevier76 Görüntülenme

Surface characterization of dinitrophenyl-diaminophenyl nanoplatform on glassy carbon

Ali Osman SOLAK2,4-dinitrophenol (DNP) was covalently bonded to glassy carbon substrate by cyclic voltammetry (CV) technique. 2, 4-diaminophenol film (DAPO) was acquired with electrochemical reduction of 2,4-dinitrophenol film (DNPO). Prepared films were characterized by X-ray photoelectron spectroscopy (XPS) and germanium attenuated total reflection infrared (GATR-FT-IR) spectroscopy. A hemispherical germanium ATR element used with p-polarized light at 65° incidence angle yielded high signal/noise IR spectra for monolayer coverage of molecules on glassy carb ...Daha fazlası Makale2013Journal of Molecular LiquidsElsevier52 Görüntülenme

A novel sensitive Cu(II) and Cd(II) nanosensor platform: Graphene oxide terminated p-aminophenyl modified glassy carbon surface

Ali Osman SOLAKGraphene oxide (GO) based glassy carbon (GC) electrode has been prepared. Firstly, p-nitrophenyl (NP) modified GC (NP/GC) electrode was prepared via the electrochemical reduction of its tetraflouroborate diazonium salt. After the formation of NP/GC electrode, the negative potential was applied to NP/GC electrode to reduce the nitro groups to amine. p-Aminophenyl (AP) modified GC (AP/GC) electrode was immersed into a graphene oxide solution containing 1-ethyl-3(3-(dimethlyamino)propyl)-carbodiimide. Hence, we constructed GO terminated AP modifie ...Daha fazlası Konferans Bildirisi2013Electrochimica ActaElsevier78 Görüntülenme

A novel impedimetric biosensor based on graphene oxide/gold nanoplatform for detection of DNA arrays

Ali Osman SOLAKA highly sensitive method for detection of DNA hybridization was developed. This method was based on the modification of glassy carbon electrode with gold nanoparticles (AuNPs) involving p-aminothiophenol (ATP) functionalized graphene oxide (GO). This GO was used as a platform for impedimetric genosensing using 5′-TA GGG CCA CTT GGA CCT-(CH2)3-SH-3′ single-stranded probe (ss-DNA), 5′-AGG TCC AAG TGG CCC TA-3′ (target DNA), 5′-SH-C6-TAG GGC CA-3′ (non-complementary-1) and 5′-SH-C6-TGC CCG TTA CG 3-′ (non-complementary-2) oligonucleotide sequence ...Daha fazlası Makale2013Sensors and Actuators B: ChemicalElsevier106 Görüntülenme

Phosphorus-nitrogen compounds: Part 28. Syntheses, structural characterizations, antimicrobial and cytotoxic activities, and DNA interactions of new phosphazenes bearing vanillinato and pendant ferrocenyl groups

Ali Osman SOLAKThe gradually Cl replacement reactions of spirocyclic mono (1 and 2) and bisferrocenyl cyclotriphosphazenes (3–5) with the potassium salt of 4-hydroxy-3-methoxybenzaldehyde (potassium vanillinate) gave mono (1a–5a), geminal (gem-1b–5b), non-geminal (cis-1b, cis-5b and trans-2b–5b), tri (1c–5c) and tetra-substituted phosphazenes (1d–5d). Some phosphazenes have stereogenic P-center(s). The chirality of 4c was verified using chiral HPLC column. Electrochemical behaviors were influenced only by the number of ferrocene groups, but not the length of ...Daha fazlası Makale2013Journal of Molecular StructureElsevier65 Görüntülenme

Determination of Acetaminophen in Commercial Formulations Using Silver Nanostructured Aniline Modified Pencil Graphite Electrode

Ali Osman SOLAKA nanostructured silver-aniline modified pencil electrode obtained by applying experimental design and optimization was developed for the differential pulse stripping voltammetric quantification of acetaminophen in the pharmaceutical products, tablet and syrup. The electrode development process was performed by the modification of PGE with aniline using CV procedure and the reduction of silver nanoparticle on the polyaniline modified PGE. As a result, a new electrode system consisting of a nanostructured silver-polyaniline modified pencil graph ...Daha fazlası Makale2013Journal of The Electrochemical SocietyElectrochemical Society Inc73 Görüntülenme

Modification of glassy carbon electrode by the electrochemical oxidation of 3-aminophenylcalix[4]pyrrole in nonaqueous media

Ali Osman SOLAK3-Aminophenylcalix[4]pyrrole (3APCP) was grafted to a glassy carbon (GC) surface during the electrochemical oxidation process in 0.1 M tetrabutylammoniumtetra-fluoroborate (TBATFB) containing acetonitrile solution. The presence of a surface film was confirmed electrochemically by comparing voltammograms of dopamine and ferricyanide redox probes at the bare and modified electrodes. Reflection-absorption infrared spectroscopy (RAIRS), XPS, atomic force microscopy (AFM), ellipsometry and the contact angle measurements were also employed to charact ...Daha fazlası Makale2012Surface and Interface AnalysisWiley59 Görüntülenme

Synthesis and structural and electrochemical characterization of novel macrocyclic vic-dioxime ligand and its mononuclear transition and nontransition metal complexes

Ali Osman SOLAK The reaction of N-(4-aminophenyl)aza-15-crown-5 (1) with anti-chlorophenylglyoxime (2) produces a novel azacrown ether containing vic-dioxime, N-(4-aminophenyl)aza-15-crown-5-phenylglyoxime (LH_2). LH_2 reacts with Ni(II), Cu(II), Co(II), Cd(II), and Zn(II) ions to yield the mononuclear transition and nontransition metal complexes [M(LH)_2] (M = Ni and Cu), [M(LH)_2(H_2O)_2] (M = Co), and [M(LH)(H_2O)(Cl)] (M = Cd and Zn). The structural features of LH_2 were studied using several techniques including elemental analysis, Fourier transform infr ...Daha fazlası Makale2012Turkish Journal of ChemistryTübitak54 Görüntülenme

Synthesis of some azacrown derivatives and fabrication of their nanofilms on the glassy carbon surface

Ali Osman SOLAKThe modification of N-phenyl-aza-15-crown-5 (PA15C5) and N-(4-aminophenyl)-aza-15-crown-5 (4APA15C5) on glassy carbon (GC) electrode was performed by the electrochemical oxidation of the corresponding azacrown derivatives in anhydrous acetonitrile media. The electrochemical behavior of the resulting modified GC electrode was investigated in the presence of electroactive redox probes and these results, together with the X-ray photoelectron spectroscopy (XPS) and reflection-absorption infrared spectroscopy were used to confirm the attachment of t ...Daha fazlası Makale2012Journal of Solid State Electrochemistry : Current Research and Development in Science and TechnologySpringer78 Görüntülenme

A novel vic-dioxime ligand and its Ni(II), Cu(II) and Co(II) complexes containing calix[4]pyrrole moiety: synthesis, characterization and redox properties

Ali Osman SOLAKA new calix[4]pyrrole functionalized vic-dioxime, 3-(4-methyl-9,9,14,14,19,19-hexaethylcalix[4]pyrrole)benzoaminoglyoxime (LH2) was synthesized from anti-chloroglyoxime and 3-aminophenyl-calix[4]pyrrole at room temperature. The mononuclear complexes {nickel(II), copper(II) and cobalt(II)} of this vic-dioxime ligand were prepared and their structures were confirmed by elemental analysis, IR and UV–Vis spectrophotometry, magnetic susceptibility; the MS, 1H and 13C NMR spectra of the LH2 ligand and its Ni(II) complex were also recorded. The experi ...Daha fazlası Makale2012Journal of Inclusion Phenomena and Macrocyclic ChemistrySpringer60 Görüntülenme

Syntheses and modifications of bisdiazonium salts of 3,8-benzo[c]cinnoline and 3,8-benzo[c]cinnoline 5-oxide onto glassy carbon electrode and the characterization of the modified surfaces

Ali Osman SOLAKThe goal of this study was to prepare novel glassy carbon electrode surfaces using two similar bis-diazonium salts, 3,8-benzo[c]cinnoline (3,8-BCC-BDAS) and 3,8-benzo[c]cinnoline 5-oxide (3,8-BCCNO-BDAS) at the glassy carbon (GC) surface. These diazonium salts were reduced electrochemically and covalently electrografted onto the glassy carbon electrode surface to form modified electrodes. Electrochemical reduction of 3,8-BCC-BDAS and 3,8-BCCNO-BDAS salts on the electrode surface yielded a compact and stable film. The existence of BCC moieties o ...Daha fazlası Makale2012Journal of Solid State Electrochemistry : Current Research and Development in Science and TechnologySpringer54 Görüntülenme

Determination of pK a of benzoic acid- and p-aminobenzoic acid-modified platinum surfaces by electrochemical and contact angle measurements

Ali Osman SOLAKAcidity constant values of benzoic acid (BA)-modified platinum electrode (Pt-BA) and p-aminobenzoic acid (pABA)-modified platinum electrode (Pt-NHBA) surfaces were determined using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and contact angle measurements (CAM). Diazonium tetrafluoroborate salt reduction and pABA oxidation reactions were used to prepare (Pt-BA) and (Pt-NHBA) surfaces, respectively. Both surfaces exhibited pH dependence with [Fe(CN)6]3−/4− redox probe solutions at different pH; this allowed us to estim ...Daha fazlası Makale2012Chemical PapersVersita79 Görüntülenme

Electrochemically grafted etodolac film on glassy carbon for Pb(II) determination

Ali Osman SOLAKThis study reports the electrochemical modification of glassy carbon (GC) surface with etodolac (ETO), the characterization of this ETO modified glassy carbon (ETO/GC) electrode and its electroanalytical application for the determination of Pb(II) ions. Binding type of the etodolac with the glassy carbon surface was investigated and found that it was through the etheric linkage revealed from the reflection–absorption infrared spectroscopy (RAIRS). The ETO/GC electrode was characterized by cyclic voltammetry (CV), reflection–adsorption IR spectr ...Daha fazlası Makale2012Sensors and Actuators B: ChemicalElsevier74 Görüntülenme

Phenanthroline derivatives electrochemically grafted to glassy carbon for Cu(II) ion detection

Ali Osman SOLAKNew sensing platform based on modified glassy carbon (GC) suitable for design of heavy metal-ion sensor is reported in this study. GC-based electrodes were electrochemically modified by poly-5-nitro-1,10-phenanthroline (poly-5NP) and poly-5-amino, 6-nitro-1,10-phenanthroline (poly-5A6NP) layers. Grafting of electrochemically formed poly-5NP and poly-5A6NP layers at the GC electrode surface was confirmed by electrochemical reduction of nitro groups into amine groups. Presence of grafted poly-5NP and poly-5A6NP layers and formation of their reduc ...Daha fazlası Makale2012Sensors and Actuators B: ChemicalElsevier76 Görüntülenme

High energetic body source and strong antioxidant quercetin, morin and rutin: Their covalent grafting onto the glassy carbon electrode surfaces and investigation of surface properties

Ali Osman SOLAKHerein, electrochemical oxidation and grafting of quercetin, morin and rutin as important biological molecules has been studied with the cyclic voltammetry technique by using a glassy carbon electrode. Electrochemical studies have been performed potentiostatically within a one-compartment three-electrode cell at room temperature. Glassy carbon electrode was used as a working electrode and Pt was used as a wire counter electrode. Ag/Ag+ (10 mM AgNO3), non-aqueous reference electrode calibrated to the E1/2 of ferrocene redox probe and Ag/AgCl/KCl ...Daha fazlası Makale2012Energy Education Science and Technology Part A: Energy Science and ResearchSila Science, Turkey89 Görüntülenme

2-Benzo[c]cinnoline and 2-Benzo[c]cinnoline 6-oxide modified glassy carbon electrodes: electrocatalytic reduction of dioxygen in aqueous media

Ali Osman SOLAKBenzo[c]cinnoline (BCC) molecules were electrochemically grafted onto a glassy carbon (GC) surface in nonaqueous media, and the modified surface was characterized using cyclic voltammetry (CV) with redox probes. Blockage of the electron transfer on the modified surface was observed using redox probes. Electrocatalytic effect of 2BCC modified GC (2BCC-GC) electrode surface towards to the electrochemical reduction of dioxygen was also investigated. A mechanistic scheme for the electrochemical catalysis was proposed. To clarify the mechanism of th ...Daha fazlası Makale2011Instrumentation Science & TechnologyTaylor & Francis68 Görüntülenme

Spectroscopic and Electrochemical Characterization of Benzoylglycine-Modified Glassy Carbon Electrode: Electrocatalytic Effect Towards Dioxygen Reduction in Aqueous Media

Ali Osman SOLAKPresent work aims to create a benzoylglycine (BG)-modified glassy carbon (GC) substrate exploiting the electroreduction of diazonium salts. Dopamine was used to confirm the attachment of benzoylglycine molecules onto the glassy carbon surface by observing the blockage of the electron transfer using cyclic voltammetry (CV). BG-modified GC surface (BG-GC) was also characterized by Raman spectroscopy and electrochemical impedance spectroscopy (EIS) techniques. The ellipsometric thickness of the BG film was measured as approximately 14 nm for seven ...Daha fazlası Makale2011Spectroscopy Letters: An International Journal for Rapid Communication Taylor & Francis53 Görüntülenme

Synthesis, electrochemical and structural characterization of novel azacrown ether containing macrocyclic redox-active vic-dioxime ligand and its mononuclear transition metal complexes: Application of DEPT, HSQC, HMBC-NMR and cyclic voltammetry

Ali Osman SOLAKThis paper presents a new azacrown containing vic-dioxime; anti-N-(4-aminophenyl)aza-15-crown-5-glyoxime (LH2), and its mononuclear nickel(II), copper(II), cobalt(II), cadmium(II) and zinc(II) complexes. The azacrown moieties appended at the periphery of the oxime provide solubility for the vic-dioxime ligand and complexes in common organic solvents. The mononuclear M(LH)2 (M = Ni and Cu), M(LH)2(H2O)2 (M = Co) and [M(LH)(H2O)(Cl)] (M = Cd and Zn) complexes have been obtained with the metal:ligand ratios of 1:2 and 1:1. The structure of the lig ...Daha fazlası Makale2011PolyhedronElsevier42 Görüntülenme

1,10-Phenanthroline modified glassy carbon electrode for voltammetric determination of cadmium(II) ions

Ali Osman SOLAKThis study reports the electrochemical modification of glassy carbon (GC) electrode surface with the electro-polymerized form of 1,10-phenanthroline monohydrate (PMH), the characterization of this polyphenanthroline modified electrode (PPMH/GC) and the electroanalytical application suitable for the determination of Cd(II) ions. The PPMH/GC electrode was characterized by cyclic voltammetry, chronoamperometry and atomic force microscopy and formation of polyphenanthroline layer grafted to surface of GC electrode was evidenced. Selectivity of PPMH ...Daha fazlası Makale2011Sensors and Actuators B: ChemicalElsevier67 Görüntülenme

Direct electron transfer from glucose oxidase immobilized on polyphenanthroline-modified glassy carbon electrode

Ali Osman SOLAKThis study reports direct electron transfer (DET) from immobilized glucose oxidase (GOx) via grafted and electropolymerized 1,10-phenanthroline monohydrate (PMH). The layer of poly-1,10-phenanthroline (PPMH) was gained via electrochemical deposition, which was used to create the PPMH-modified GC-electrode (PPMH/GC-electrode). Further, the GOx was immobilized on the PPMH/GC-electrode. The effect of surface-modification by the PPMH on the electron-transfer between enzyme and electrode-surface and some other electrochemical/analytical-parameters o ...Daha fazlası Makale2011Biosensors and BioelectronicsElsevier132 Görüntülenme

Application of the linear principle for the strongly-correlated variables: Calculations of differences between spectra

Ali Osman SOLAKIn this paper the authors suggest a new method of detection of possible differences between similar near infrared (NIR) spectra based on the self-similar (fractal) property. This property is a general characteristic that belongs to a wide class of the strongly-correlated systems. As an example we take a set of NIR spectra measured for three systems: (1) glassy carbon (GC) electrodes, (2) GC electrodes affected by azobenzene (AB) substance and finally (3) films (AB-FILM). Besides the physical model that should describe the intrinsic properties o ...Daha fazlası Makale2011Communications in Nonlinear Science and Numerical SimulationElsevier54 Görüntülenme

Covalent grafting of three flavonoids onto the glassy carbon electrode surface by cyclic voltammetry

Ali Osman SOLAKElectrochemical oxidation of quercetin (QR), 3-hydroxyflavone (3HF), and baicalein (BN) and their grafting onto the glassy carbon (GC) electrode have been studied using the cyclic voltammetric (CV) technique. Electrochemical studies were performed within a one-compartment three-electrode cell at room temperature. The modification was carried out only in nonaqueous media, while the electrochemical characterization was done in both aqueous and nonaqueous media. In the nonaqueous experiments, 0.1 m tetrabutylammonium tetrafluoroborate in acetonit ...Daha fazlası Makale2011Reviews in Analytical ChemistryWalter de Gruyter GmbH80 Görüntülenme

A novel apigenin modified glassy carbon sensor electrode for the determination of copper ions in soil samples

Ali Osman SOLAKIn this study, electrochemical modification of a glassy carbon (GC) electrode with apigenin was carried out and the modified electrode was used for determination of copper(II) (Cu(II)) in soil samples. The GC was modified through the electrochemical polymerization of apigenin (PolyApi/GC) on the electrode surface in aqueous media. The electrode surface was modified with apigenin in phosphate buffer solution (PBS), pH 7, from 0 mV to +1400 mV potential ranges, using 100 mV s−1 sweep rate and 30 cycles by cyclic voltammetry (CV). The surface char ...Daha fazlası Makale2011Analytical MethodsRoyal Society of Chemistry128 Görüntülenme

A novel surface plasmon resonance enhanced total internal reflection ellipsometric application: electrochemically grafted isophthalic acid nanofilm on gold surface

Ali Osman SOLAKThe scope of this study is to modify a Surface Plasmon Resonance (SPR) sensor slide with isophthalic acid to evaluate the possible application on the detection of copper(II) ions in aqueous media by total internal reflection ellipsometry. A gold sensor surface was modified by an electrochemical diazonium reduction modification method. The modified surfaces are characterized with cyclic voltammetry (CV) and ellipsometry. Isophthalic acid monolayer modified gold slides were used for in situdetection of aqueous Cu2+ solution with the SPR enhanced ...Daha fazlası Makale2011Analytical MethodsRoyal Society of Chemistry75 Görüntülenme

Analysis of the Nano-Surface of a Modified Glassy Carbon Electrode by Pseudo Phase Plane Method

Ali Osman SOLAKThis paper presents the Pseudo phase plane (PPP) method for detecting the existence of a nanofilm on the nitroazobenzene-modified glassy carbon electrode (NAB-GC) system. This modified electrode systems and nitroazobenze-nanofilm were prepared by the electrochemical reduction of diazonium salt of NAB at the glassy carbon electrodes (GCE) in nonaqueous media. The IR spectra of the bare glassy carbon electrodes (GCE), the NAB-GC electrode system and the organic NAB film were recorded. The IR data of the bare GC, NAB-GC and NAB film were categoriz ...Daha fazlası Makale2011Journal of Computational and Theoretical NanoscienceAmerican Scientific Publishers79 Görüntülenme

Covalently Grafted on to the Glassy Carbon Electrode in Non-Aqueous Media of Apigenin and Naringenin as Different Flavonoid Derivatives

Ali Osman SOLAKIn this paper, apigenin (AG) and naringenin (NG) have been studied with the cyclic voltammetric technique using the glassy carbon (GC) electrode. The modification was carried out only in non-aqueous media, while the electrochemical characterization was done in both aqueous and non-aqueous media. 0.1 M tetrabutylammonium tetrafluoroborate (TBATFB) in acetonitrile (MeCN) was used in non-aqueous experiments, Britton-Robinson (BR) buffer solution (pH=2) and 0.1 M KCl solution were used in aqueous experiments. Surface modification experiments were p ...Daha fazlası Makale2011Analytical and Bioanalytical ElectrochemistryUniversity of Tehran, Iran57 Görüntülenme

Heavy Metal Levels and Mineral Nutrient Status of Natural Walnut (Juglans regia L.) Populations in Kyrgyzstan: Nutritional Values of Kernels

Bakıt BORKOYEV Kalıypa SALİYEVA Ali Osman SOLAK İbrahim İlker ÖZYİĞİTIn this study, mineral nutrient and heavy metal (Al, Ca, Cd, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and Zn) contents of the walnut kernels and their co-located soil samples collected from the four different zones of natural walnut forests (Sary-Chelek, Arslanbap, and Kara-Alma in Jalal-Abad Region and Kara-Shoro in Osh Region) in Kyrgyzstan were investigated. The highest concentrations for all elements determined in the soil samples were observed in the Sary-Chelek zone whereas the Arslanbap zone was found to be having the lowest concentrations except ...Daha fazlası Makale2019Biological Trace Element ResearchSpringer142 Görüntülenme

New Voltammetric Approach to the Quantitation of Paracetamol in Tablets and Syrup using Chemometric Optimization Technique

Ali Osman SOLAKA new voltammetric approach was developed for the determination of paracetamol in tablet and syrup samples using chemometric optimization. The method is based on the use of the gold nanoparticles-polyaniline (AuNPs-PA) modified pencil graphite electrode (PGE). Electrode system was fabricated by using the electrochemical reduction of gold on aniline modified pencil electrode to give gold nanoparticles. A 3(3) full factorial design was used to find optimal oxidation conditions of paracetamol on the AuNPs-PA-PGE. The optimal oxidation conditions o ...Daha fazlası Makale2019Journal of Analytical ChemistryPleiades Publishing51 Görüntülenme

Electrochemical Detection of Cadmium and Lead in Rice on Manganese dioxide Reinforced Carboxylated Graphene Oxide Nanofilm

Ali Osman SOLAKManganese dioxide decorated carboxylated graphene oxide (Mn-GO-COOH) attached onto the glassy carbon (GC) electrode to develop a new method for the simultaneous determination of Cd2+ and Pb2+ ions in rice samples. Graphene oxide (GO) was attached on 4-aminophenyl covalently modified glassy carbon surface via amide reaction. As-prepared modified material was characterized with XPS, SEM and electrochemical methods. A novel differential pulse anodic stripping voltammetric (DPASV) method was developed for the simultaneous determination of Cd2+ and ...Daha fazlası Makale2018MANAS Journal of Engineering (MJEN)Kyrgyz - Turkish Manas University45 Görüntülenme

Fabrication of Carbon-Doped Titanium Dioxide Nanotubes as Anode Materials for Photocatalytic Glucose Fuel Cells

Nahit AKTAŞ Ali Osman SOLAKIn the present work, TiO2 nanotubes (TNT) and carbon-doped TiO2 nanotubes (C-TNT) were produced via the anodization method. Carbon doping was performed on TNT in a tubular oven employing two different 15 cm3/min total flow rates with varying compositions of acetylene (C2H2) and argon (Ar) as VC2H2/Ar = 7/93 (1 cm3/min C2H2 14 cm3/min Ar) for C-TNT (7:93) and VC2H2/Ar = 33/67 (5 cm3/min C2H2 10 cm3/min Ar) for C-TNT (33:67). The synthesized C-doped TNT was characterized by x-ray diffraction (XRD), Raman spectroscopy, and scanning electron mi ...Daha fazlası Makale2021Journal of Electronic MaterialsSpringer81 Görüntülenme

The synthesis of a novel DDPHC diazonium salt: Investigation of its usability in the determination of phenol and chlorophenols using CV, SWV and DPV techniques

Ali Osman SOLAKElectrochemical and spectroelectrochemical properties of newly synthesized diazonium salt of 2-(2-(1,3-dioxo- 3,3a-dihydro-1H-isoindol-2(7aH)-yl)-1-(3 methyl-3-phenylcyclobutyl)ethylidene) hydrazinecarboxamide (DDPHC-DAS) were studied using glassy carbon (GC) electrode. In the current study, surface characterization was performed by cyclic voltammetry (CV). Besides electrochemical impedance spectroscopy (EIS) was used for the electrochemical and spectroelectrochemical characterization. Surface images were obtained using scanning electron micros ...Daha fazlası Makale2020Inorganic Chemistry CommunicationsElsevier38 Görüntülenme

DETERMINATION OF NUT PROPERTIES AND CHEMICAL COMPOSITIONS OF WALNUT (JUGLANS REGIA L.) GENOTYPES GROWN IN WALNUT-FRUIT FORESTS OF KYRGYZSTAN

Ali Osman SOLAK Kalıypa SALİYEVA İbrahim İlker ÖZYİĞİT Bakıt BORKOYEVIn this study, sixteen genotypes selected from walnut-fruit forests in the Osh and Jalal-Abad regions of Kyrgyzstan evaluated for nut properties and chemical composition. The nut traits such as nut dimension, nut and kernel weight, kernel ratio, and shell thickness were investigated. The ash, protein, oil, carbohydrate content and fatty acid composition of genotypes were also evaluated. The ranges of average nut characteristics determined for the selected genotypes were: 27.4-32.1 mm nut length; 23.8-28.6 mm nut width; 24.1-29.0 mm nut suture; ...Daha fazlası Makale2020Fresenius Environmental BulletinParlar Scientific Publications (PSP), Germany48 Görüntülenme

A novel highly sensitive carbon-based HMPD/GC sensor electrode: copper ions analysis in flour and water samples

Ali Osman SOLAKIn this research, (Z)-2-(2-(hydroxyimino)-2-(3-methyl-3-phenylcyclobutyl) ethyl)-3a,7a-dihy-dro-1H-isoindole-1,3(2H)-dione, HMPD molecule has been grafted to the glassy carbon (GC) electrode surface. The HMPD-modified GC electrode has been originally developed and it used for the quantitative determination of Cu(II) in flour and water samples. The modification steps have been performed using cyclic voltammetry (CV). CV, electrochemical impedance spectroscopy and scanning electron microscopy have been employed for the characterization processes. ...Daha fazlası Makale2018Desalination and Water TreatmentDesalination Publications56 Görüntülenme

YÖK Akademik Bilgiler

Eğitim Görev Makale Kitap Bildiri

2018 - 2020

ANADOLU ÜNİVERSİTESİ

AÇIKÖĞRETİM FAKÜLTESİ HUKUK BÖLÜMÜ

2007 - 2011

SAKARYA ÜNİVERSİTESİ

SOSYAL BİLİMLER ENSTİTÜSÜ İKTİSAT (DR)

2005 - 2006

SELÇUK ÜNİVERSİTESİ

SOSYAL BİLİMLER ENSTİTÜSÜ İKTİSAT (YL) (TEZSİZ)

1995 - 2002

ÇUKUROVA ÜNİVERSİTESİ

MÜHENDİSLİK-MİMARLIK FAKÜLTESİ İNŞAAT MÜHENDİSLİĞİ BÖLÜMÜ

2024

DOÇENT

ABANT İZZET BAYSAL ÜNİVERSİTESİ

İKTİSADİ VE İDARİ BİLİMLER FAKÜLTESİ MALİYE BÖLÜMÜ

1970

DOKTOR ÖĞRETİM ÜYESİ

ABANT İZZET BAYSAL ÜNİVERSİTESİ

İKTİSADİ VE İDARİ BİLİMLER FAKÜLTESİ MALİYE BÖLÜMÜ

Rail policies in Turkey after 2002: Is there a modal shift? ALİ OSMAN SOLAK , Yayın Yeri:Competition and Regulation in Network Industries , 2022Uluslararası Hakemli Alan endeksleri (Scopus) Özgün Makale https://dx.doi.org/10.1177/17835917221112104

Toll roads in Turkey: Private versus public ALİ OSMAN SOLAK , Yayın Yeri:Case Studies on Transport Policy , 2022Uluslararası Hakemli Alan endeksleri (ESCI, Scopus) Özgün Makale https://dx.doi.org/10.1016/j.cstp.2022.03.019

Squatter housing transformations in Turkey after 2002: public choice perspective ALİ OSMAN SOLAK , Yayın Yeri:International Journal of Housing Policy , 2021Uluslararası Hakemli SSCI Özgün Makale https://dx.doi.org/10.1080/19491247.2021.1964204

Turkish Intercity Coach Industry and COVID-19: Lessons and Future Insights ALİ OSMAN SOLAK , Yayın Yeri:Network Industries Quarterly Turkey , 2020Uluslararası Hakemsiz Endekste taranmıyor Özgün Makale

Türkiye Demiryollarında Serbestleştirme ALİ OSMAN SOLAK , Yayın Yeri:Rekabet Dergisi , 2018Uluslararası Hakemli TR DİZİN Özgün Makale

Bounds Testing Approaches to Housing Demand in Turkey: Is There a Real Estate Bubble? ALİ OSMAN SOLAK,BURHAN KABADAYI , Yayın Yeri:International Journal of Economics and Financial Issues , 2016Uluslararası Hakemli Alan endeksleri (Scopus) Özgün Makale

An Econometric Analysis of Housing Demand in Turkey ALİ OSMAN SOLAK,BURHAN KABADAYI , Yayın Yeri:Advances in Management and Applied Economics , 2016Uluslararası Hakemli Diğer endeksler (EconLit, RePEc) Özgün Makale

Regulations in Scheduled Intercity Coach Transport Sector in Turkey ALİ OSMAN SOLAK , Yayın Yeri:International Journal of Economics and Finance , 2016Uluslararası Hakemli Diğer endeksler (RePEc, EBSCO) Özgün Makale https://dx.doi.org/10.5539/ijef.v8n8p33

TOKİ'nin Konut Üretmesinin İktisadi Etkinlik Açısından Değerlendirilmesi ve Bir Model Önerisi ALİ OSMAN SOLAK , Yayın Yeri:Finans-Politik & Ekonomik Yorumlar Dergisi , 2015Ulusal Hakemli TR DİZİN Özgün Makale

Türkiye Otobüs ile Şehirlerarası Tarifeli Yolcu Taşımacılığı Sektörünün Rekabet Düzeyi ALİ OSMAN SOLAK , Yayın Yeri:Rekabet Dergisi , 2014Uluslararası Hakemli TR DİZİN Özgün Makale

Türkiye'nin Toplam Petrol Talebi ve Ulaştırma Sektörü Petrol Talebinin ARIMA Modeli ile Tahmin Edilmesi ALİ OSMAN SOLAK , Yayın Yeri:Süleyman Demirel Üniversitesi İİBF Dergisi , 2013Uluslararası Hakemli Diğer endeksler (EBSCO) Özgün Makale

Türkiye'nin Net Petrol İthalatının Fiyat ve Gelir Esneklikleri: ARDL Modelleme Yaklaşımı İle Eşbütünleşme Analizi ALİ OSMAN SOLAK,AHMET BEŞKAYA , Yayın Yeri:International Journal of Management Economics and Business , 2013Uluslararası Hakemli TR DİZİN Özgün Makale https://dx.doi.org/10.11122/ijmeb.2013.9.18.423

Türkiye'de Ulaştırma Sektörü Enerji Tüketiminin Azaltılması: Bir Senaryo Yaklaşımı ALİ OSMAN SOLAK , Yayın Yeri:Abant İzzet Baysal Üniversitesi İİBF Ekonomik ve Sosyal Araştırmalar Dergisi , 2013Uluslararası Hakemli TR DİZİN Özgün Makale

Evrensel Hizmetlerin Sunulduğu Piyasalarda Serbestleştirme ve Özelleştirme: Ekonomik Etkinlik Açısından Bir Değerlendirme ALİ OSMAN SOLAK , Yayın Yeri:Süleyman Demirel Üniversitesi Sosyal Bilimler Enstitüsü Dergisi , 2012Uluslararası Hakemli Diğer endeksler (EBSCO) Derleme Makale

Petrol Fiyatlarını Belirleyici Faktörler ALİ OSMAN SOLAK , Yayın Yeri:Uluslararası Alanya işletme Fakültesi Dergisi , 2012Uluslararası Hakemli Diğer endeksler (EBSCO) Derleme Makale

Demiryolu ve Karayolu Ulaştırma Sistemlerinin Ekonomik Etkinlik Analizi ALİ KABASAKAL,ALİ OSMAN SOLAK , Yayın Yeri:Anadolu Üniversitesi Sosyal Bilimler Dergisi , 2010Uluslararası Hakemli TR DİZİN Özgün Makale

Demiryolu Sektörünün Rekabete Açılması ALİ KABASAKAL,ALİ OSMAN SOLAK , Yayın Yeri:Dumlupınar Üniversitesi Sosyal Bilimler Dergisi , 2009Ulusal Hakemli TR DİZİN Derleme Makale

Evrensel Hizmet Yükümlülüğünün Uygulanması ve Türk Demiryolu Sektörü ALİ KABASAKAL,ALİ OSMAN SOLAK , Yayın Yeri:Bilgi Ekonomisi ve Yönetimi Dergisi , 2008Ulusal Hakemli Endekste taranmıyor Derleme Makale

1. The Regulation of Turkish Network Industries Bölüm Adı:Regulation of Turkish Intercity Coach Industry, SOLAK ALİ OSMAN, Yayın Yeri:Springer, Editör:Eroğlu Muzaffer, Finger Matthias, Basım sayısı:1, Sayfa sayısı:20, ISBN:978-3-030-81719-0, Bölüm Sayfaları:307 -326

Demiryolu Ulaşım Sistemlerinde Verimlilik ALİ KABASAKAL,ALİ OSMAN SOLAK (12.10.2011 -14.10.2011 ) , Yayın Yeri:Uluslararası Avrasya Ekonomileri Konferansı , 2011Uluslararası Tam metin bildiri

Karayolu ve Demiryolu Ulaştırma Sistemlerinin Kaza Maliyetleri ALİ KABASAKAL,ALİ OSMAN SOLAK (28.10.2010 -31.10.2010 ) , Yayın Yeri:Uluslararası 8. Bilgi, Ekonomi ve Yönetim Kongresi , 2010Uluslararası Tam metin bildiri

Türkiye Emlak Talebi Analizi ALİ OSMAN SOLAK,BURHAN KABADAYI (02.06.2016 -04.06.2016 ) , Yayın Yeri:17th International Symposium on Econometrics, Operations Research and Statistics , 2016Uluslararası Özet bildiri

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