Nurdan Kurnaz Yetim

Nurdan Kurnaz Yetim
Kirklareli University · Department of Chemistry

Phd

About

45
Publications
11,161
Reads
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415
Citations
Citations since 2017
37 Research Items
385 Citations
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
Additional affiliations
January 2011 - present
Gazi University
Position
  • Research Assistant

Publications

Publications (45)
Article
Full-text available
Co3O4 nanoparticles (NPs) were formed using hydrothermal synthesis method and various surfactants to study the effect of changing surface morphology on catalytic and antibacterial activities. FT-IR, TEM, SEM, BET, XRD, and XPS analyses were performed to characterize the NPs. It was observed that as the morphology of Co3O4 changes, it creates differ...
Article
In this work, flower-like zinc oxide (ZnO) nanostructures were synthesized using hydrothermal synthesis. The fabricated nanoflowers were used as adsorbents for the removal of heavy metal ions such as lead and chrome. Morphological assessments and chemical investigations of the ZnO nanoflowers were conducted by using X-ray diffraction, field emissio...
Article
Full-text available
Ferri and ferro coordination polymers in sphere structure were synthesized. Scanning Electron Microscopy (SEM) Energy Dispersive X-Ray Spectroscopy (EDX), Gel Permeation Chromatography (GPC), elemental analysis, and Fourier Transform Infrared Spectroscopy (FT-IR) were performed for chemical and structural characterization of the coordination po...
Article
Full-text available
In this study, lead (Pb2+) ions were determined by flame atomic absorption spectrophotometry (FAAS) using solid phase extraction (SPE) method by NiO nanoflowers and their absorption amounts were determined. Nickel oxide (NiO) nanoflowers were prepared by hydrothermal method and characterized using spectroscopic and microscopic methods. Analytica...
Article
Full-text available
In this study, magnetic nanocomposites containing polyamidoamine (PAMAM) dendrimers were synthesized and horseradish peroxidase (HRP) immobilization was carried out on this support. Then, the potential use of immobilized HRP enzyme in the decolourization of Congo red and crystal violet dyes was investigated. To determine the optimum conditions, Con...
Article
Heavy metal ions threaten public health and marine life; thus, removal of heavy metals is essential for the environment. Bi2S3 nanostructures are active materials which used in various applications. In this work, we produced Bi2S3 nanoflowers using hydrothermal synthesis and assessed their Cd2+ ions removal capability. Structural properties of the...
Article
Full-text available
In this work, cobalt(II/III) oxide (Co3O4) nano/microflowers were practically synthesized in laboratory conditions. Adsorbence properties of the nanoflowers were investigated for the removal of cadmium and chromium heavy metal ions. To assess the chemical and morphological characteristics of Co3O4 nanoflowers, Fourier transform infrared spectroscop...
Article
Full-text available
In this work, WO3 nanoparticle decorated nanoparticle decorated magnetic poliamidoamin (PAMAM) dendrimer nanocomposites were fabricated and used as a catalyser for the reduction of 4-nitrophenol (4-NP). Fe3O4 superparamagnetic iron oxide nanoparticles were used as magnetic core. Magnetic iron oxide nanoparticles were produced using hydrothermal syn...
Article
Full-text available
We managed to produce Fe3O4 magnetic nanoparticles and coat them with APTES and TEOS as a buffer. 2 nd generation PAMAM dendrimers were used to cover the APTES and TEOS coated core. The surface of the multi-shelled structure was decorated with MoO3 nanoparticles where Fe3O4@G2/MoO3 dendrimer-based nanocomposites were obtained. Nanocomposites exhibi...
Article
Removal of heavy metals becomes increasingly crucial for public health and the environment. In this regard, Bi2S3 nanoflowers were produced for heavy metal ion removal applications. Nanoflowers are fabricated using hydrothermal synthesis, and then tested as adsorbents for the removal of lead (Pb2+) ions from aqueous systems. To assess the morpholog...
Article
Full-text available
Enzymes are extensively used as catalyst in several fields of production such as chemistry, and pharmaceuticals owing to their selectivity, efficiency and environmentally friendliness. However, their applications are often hindered due to their insufficient stability and difficulties in re-use. As a member of porous crystalline materials, metal org...
Article
Magnetic nanoparticles (MNPs) and nanocomposites can be used in different applications including catalysis reactions and applications. Magnetic nanocomposites can be reused and magnetically filtrated after catalysis reaction. For this purpose, Fe3O4 MNPs were produced using the co-precipitation technique. Fe3O4 MNPs were coated with SiO2 shell, APT...
Article
Full-text available
Co3O4, NiO and ZnO microparticles were decorated with Fe3O4 nanoparticles where novel Co3O4@Fe3O4, NiO@Fe3O4 and ZnO@Fe3O4 microcomposites were obtained with significant magnetic properties. Decorating microparticles with Fe3O4 nanoparticles helped us to obtain microcomposites with outstanding magnetic characteristics, since Fe3O4 nanoparticles wer...
Article
Full-text available
In this work, Fe3O4 magnetic nanoparticles (MNPs) were produced using the co-precipitation method. The surface of the produced MNPs was covered with TEOS and APTES as a shell and the APTES shell is doped with Au nanoparticles (NPs) where Fe3O4@SiO2/APTES–Au nanocomposites were obtained. Catalytic performance of the Fe3O4@SiO2/APTES–Au NPs was asses...
Article
Full-text available
Metal nanoparticles have the potential to be used in many technological and medical applications, especially in imaging, diagnosis, and treatment. Most of the metal nanoparticles are cytotoxic. Coating of metal nanoparticles with inorganic / organic groups is proposed to reduce their toxicity. In our research, Fe3O4 nanoparticles were produced by t...
Article
Fe3O4 magnetic nanoparticles were produced and covered with TEOS and APTES which were known to reduce the toxic properties of nanoparticles. Nanoparticles were functionalized second-generation PAMAM dendrimers and doped with Au and Bi2O3 nanoparticles where Fe3O4@G2/Au/Bi2O3 nanocomposites were obtained for potential multimodal imaging applications...
Article
Full-text available
In this study, the usability of AChE immobilized nanospheres (NSs) was investigated to identify Imidan Phosmet and Vantex pesticides. Accordingly, (2AEPS-SalBr) coded nanosphere was synthesized in result of condensation of (Tris (2 aminoethyl)amine polymer and 5-bromine-2-hydroxy benzaldehyde. Then, new nanosphere coded 2AEPS-SalBr-Pd was synthesiz...
Article
Full-text available
Currently, pesticide residues increasingly lead to health problems. Acetylcholinesterase enzyme (AChE) plays a role in detoxification processes due to their ability to scavenge organophosphates. Thus, this enzyme has been selected for the detection of pesticides. Herein, this study describes the preparation and application of appropriate new immobi...
Article
Co3O4 nanostructures were manufactured using hydrothermal synthesis method and then at high temperature calcinations process was performed. In the production process, the starting material remained constant and the additives were changed where urea (CO(NH2)2), polyvinylpyrrolidone (PVP), ethylenediamine (C₂H₄(NH₂)₂) and sodium hydroxide (NaOH) were...
Article
Full-text available
Fe3O4 magnetic nanoparticles (MNPs) were produced using hydrothermal synthesis and coated with tetraethyl orthosilicate (TEOS) where Fe3O4@SiO2 MNPs with fluorescent properties were obtained. Structural characterization of the nanoparticles was performed using X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Str...
Article
Full-text available
Bi2S3 and Fe3O4 nanostructures as well as Bi2S3@Fe3O4 nanocomposites were produced using hydrothermal synthesis. Scanning electron microscopy (SEM), energy dispersive spectra (EDS) and X-ray diffraction (XRD) were used in the characterization of the nanocomposites. The effect of heat treatment on chemical, physical and magnetic properties of the na...
Article
Full-text available
In this study, flower-like NiO structures were synthesized by hydrothermal method. Then, Fe3O4 was doped on NiO that NiO structures gain magnetic properties. TEM (Transmission Electron Microscopy) and SEM (Scanning Electron Microscopy) were used to assess the morphology of the NiO structures. XRD (X-ray Diffraction) was used to evaluate the crystal...
Article
Full-text available
In this work, structural, electrochemical and optical properties of the flower-like Co3O4, NiO and CuO nanostructures were investigated. Co3O4, NiO and CuO nanoflowers were prepared using hydrothermal method. Fourier transform infrared spectroscopy was used in the confirmation of the chemical composition of the nanostructures. X-ray diffraction (XR...
Article
Full-text available
In this study, flower-like NiO structures were synthesized by hydrothermal method. Then, Fe3O4 was doped on NiO that NiO structures gain magnetic properties. TEM (Transmission Electron Microscopy) and SEM (Scanning Electron Microscopy) were used to assess the morphology of the NiO structures. XRD (X-ray Diffraction) was used to evaluate the crystal...
Article
Full-text available
In this study, new polymers containing amides (TrisPS-Ntaa, and TrisPS-Ntaa-Fc) were synthe�sized by condensation reaction for qualitative identification of insecticides. The synthesized poly�mers, including amides were investigated by infrared spectroscopy (IR), scanning electron microscopy-energy dispersion X- ray spectrometry (SEM-EDX), and gel...
Article
Catalytic properties of Bi2S3 nanostructures, Fe3O4 nanoparticles and novel Bi2S3@Fe3O4 magnetic nanocomposites were investigated. Flower-like Bi2S3 nanostructures were produced using hydrothermal synthesis. Bi2S3 nanostructures were doped with Fe3O4 nanoparticles where Bi2S3@Fe3O4 novel magnetic nanocomposites was obtained. Structural characteriza...
Article
In this study, acetylcholinesterase (AChE) enzyme immobilized polymeric microspheres were prepared to detect the dichlorvos (DDVP: 2,2-dichlorovinyl dimethyl phosphate) and the chlorpyrifos (O, O-Diethyl O-3,5,6-trichloropyridin-2-yl phosphorothioate) pesticides. To produce polymeric supports, tris(2-aminoethyl)amine polystyrene (2AEPS) was reacted...
Article
Full-text available
The aim of this work was to investigate diclofop-methyl detection (found in a variety of herbicides) using novel dendrimers that have ferrocene cores, as well as their Pt(II) and Pt(IV) complexes. Novel dendrimer structures were synthesized and characterized by molar conductivity, magnetic susceptibility, FTIR, UV-Vis, 1H-NMR and LC-MS methods. The...
Article
Full-text available
New polymeric microspheres containing azomethine (1a-1c and 2a-2c) were synthesized by condensation to compare the enzymatic properties of the enzyme glucose oxidase (GOx) and to investigate antimutagenic and antimicrobial activities. The polymeric microspheres were characterized by elemental analysis, infrared spectra (FT-IR), proton nuclear magne...
Article
In this study, polymeric microsphere including Schiff base TrisPS-pyr and TrisPS-pyr-Pt(II) were obtained by condensation reaction for improve the enzymatic properties of acetylcholinesterase (AChE) and detect harmful insects. Structures of the synthesized compounds were characterized by spectroscopic methods such as FT-IR, UV–Vis, SEM-EDX, GPC. Ac...
Article
Full-text available
Enzimler, pek çok endüstride kullanılan, maliyetleri oldukça yüksek olan önemli materyallerdir. Katalitik tepkimelerde enzimler için şartlar uygun olsa bile yüksek sıcaklık, yüksek veya düşük pH ve organik/inorganik çözücülerin varlığında enzimler aktifliklerini kolaylıkla kaybedebilirler. İmmobilizasyon işlemi ile birlikte, enzimlerin ekonomik açı...
Article
In this study, new dendrimers with a ferrocene core were produced by means of a divergent method for the immobilization of the glucose oxidase enzyme (GOx). Pt(II)and Pt(IV)ions were attached to the terminal groups of dendrimers. Metal-containing dendrimers, [Fc(MGlu) 2 -Aph-Pt(II)]and [Fc(MGlu) 2 -Aph-Pt(IV)], were obtained using the “template met...
Article
Full-text available
In the study, new nanospheres support containing ferrocene were synthesized and characterized, then the properties of nanospheres as biocatalysis were researched. Novel support was prepared from (Aminomethyl)polystyrene (AMP), tryptophan (Trp) and ferrocene aldehyde (Fc) and the enzymatic properties of immobilized glucose oxidase enzyme (GOx) we...
Article
Full-text available
Supports involving tetrazole (o/m/p-F-Tet-1H) were prepared to detect pesticides. This novel te-trazole including fluorine in different positions was attached to nanoparticles (2AEPS-(o/m/p-F-Tet-1H)) by a condensation method. Primarily, the tetrazole derivatives were characterized by 1H-NMR,13C-NMR and LC-MS. Then, nanoparticles were prepared by a...
Article
Full-text available
Antimicrobial and antifungal polymers are gaining the attention of pharmaceutical makers and industrial design. Nanospheres-Polymers attached Platinum(II) / (IV) complexes have been synthesized to investigate antimicrobial activities. Firstly, nanospheres involving Schiff bases were synthesized from (aminomethyl) polystyrene and four substitute sal...
Article
Full-text available
Pt(II) and Pt(IV)-tagged nanoparticles have been synthesized according to the template method for the identification of pesticides. Their morphologies have been investigated using scanning electron microscopy and characterized by means of spectral measurements. Then, acetylcholinesterase (AChE) was immobilized onto the nanoparticles. The AChE immob...
Article
Full-text available
A good novel double ferrocene-tagged nanomaterial is designed for glucose determination and its recycling stability. Double Ferrocene-tagged nanomaterial displays higher catalytic activity toward the glucose oxidation than non-ferrocene-tagged nanomaterial. In this study novel nanoparticles including double ferrocene, N-{2-[Bis(2-aminoethyl)amino]e...
Article
Full-text available
New nanospheres have been prepared with Pt2+ and Pt4+ for compare enzymatic properties of glucose oxidase enzyme (GOx). In this study nanoparticles, (aminomethyl)polystyrene (APS), 2-hydroxy-5-methylbenzaldehyde and Pt2+/Pt4+ have been synthesized by means of template and investigated the enzymatic properties of glucose oxidase enzyme (GOx) immobil...
Article
Full-text available
Nanoparticles modified polystyrenes with some Furfural derivatives were synthesized by means of condensation and demonstrated to be a promising enzyme support by studying the enzymatic properties of glucose oxidase enzyme (GOx) immobilized on there. The characteristics of the immobilized glucose oxidase (APS-FurH)-GOx, (APS-FurCH3)-GOx, (APS-FurNO...
Article
Full-text available
Modified polystyrene with Pt(IV)-azomethine (APS-Sch-Pt) was synthesized by means of condensation and demonstrated to be a promising enzyme support by studying the enzymatic properties of glucose oxidase enzyme (GOx) immobilized on it. The characteristics of the immobilized glucose oxidase (APS-Sch-Pt-GOx) enzyme showed two optimum pH values that w...

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