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Найденный: 47 Экземпляр 0.000 sn
Ученые : Ali Osman SOLAK ✕
Коллекция [1]
Ученые [6]
Устойчивое развитие ООН [5]
Факультет / Институт [1]
Вид публикации [2]
Год публикации [11]
Язык [1]
Источник [34]
Базы данных [12]
Вид индекса [6]
Издатель [18]
Кафедра [1]
Национальный/Международный [2]
Тематический рубрикатор [35]
Prof. Dr. Ali Osman SOLAKMühendislik Fakültesi
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A novel apigenin modified glassy carbon sensor electrode for the determination of copper ions in soil samples

Ali Osman SOLAK

In 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 characterizations of this sensor electrode were perfor ...Более

Статья 2011 Mühendislik Fakültesi Analytical Methods3 ( 11 ) 128 Просмотры
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A novel surface plasmon resonance enhanced total internal reflection ellipsometric application: electrochemically grafted isophthalic acid nanofilm on gold surface

Ali Osman SOLAK

The 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 total internal reflection ellipsometry (SPRe-TIRE) ...Более

Статья 2011 Mühendislik Fakültesi Analytical Methods136 ( 7 ) 75 Просмотры
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Analysis of the Nano-Surface of a Modified Glassy Carbon Electrode by Pseudo Phase Plane Method

Ali Osman SOLAK

This 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 categorized into five series consisting of FILM1, GC-NAB1, ...Более

Статья 2011 Mühendislik Fakültesi Journal of Computational and Theoretical Nanoscience8 ( 10 ) 79 Просмотры
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Covalently Grafted on to the Glassy Carbon Electrode in Non-Aqueous Media of Apigenin and Naringenin as Different Flavonoid Derivatives

Ali Osman SOLAK

In 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 performed in the +0.3 V and +2.8 V potential ranges ...Более

Статья 2011 Mühendislik Fakültesi Analytical and Bioanalytical Electrochemistry3 ( 2 ) 57 Просмотры
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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 ÖZYİĞİT

In 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 Fe and Zn. The highest concentrations in the kerne ...Более

Статья 2019 Mühendislik Fakültesi Biological Trace Element Research189 ( 1 ) 142 Просмотры
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New Voltammetric Approach to the Quantitation of Paracetamol in Tablets and Syrup using Chemometric Optimization Technique

Ali Osman SOLAK

A 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 of drug substance were found as -524 mV for the acc ...Более

Статья 2019 Mühendislik Fakültesi Journal of Analytical Chemistry74 ( 3 ) 51 Просмотры
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Electrochemical Detection of Cadmium and Lead in Rice on Manganese dioxide Reinforced Carboxylated Graphene Oxide Nanofilm

Ali Osman SOLAK

Manganese 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 Pb2+ on the GC/Mn-GO-COOH nanoplatform electrode. ...Более

Статья 2018 Mühendislik Fakültesi MANAS Journal of Engineering (MJEN)6 ( 2 ) 45 Просмотры
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Fabrication of Carbon-Doped Titanium Dioxide Nanotubes as Anode Materials for Photocatalytic Glucose Fuel Cells

Nahit AKTAŞ | Ali Osman SOLAK

In 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 microscopy (SEM). XRD, Raman spectra, and SEM result ...Более

Статья 2021 Mühendislik Fakültesi Journal of Electronic Materials50 ( 4 ) 81 Просмотры
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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 SOLAK

Electrochemical 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 microscopy (SEM). After completion of modification and c ...Более

Статья 2020 Mühendislik Fakültesi Inorganic Chemistry Communications116 38 Просмотры
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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 BORKOYEV

In 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; 7.15-13.17 g nut weight; 3.26-5.65 g kernel weight ...Более

Статья 2020 Mühendislik Fakültesi Fresenius Environmental Bulletin29 ( 4A ) 48 Просмотры
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A novel highly sensitive carbon-based HMPD/GC sensor electrode: copper ions analysis in flour and water samples

Ali Osman SOLAK

In 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. Cu(II) standard solutions changing from 1.0 x 10( ...Более

Статья 2018 Mühendislik Fakültesi Desalination and Water Treatment112 56 Просмотры
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