Browsing by Author "Kuyuldar, Esra"
Now showing items 1-15 of 15
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Composites of Palladium-Nickel Alloy Nanoparticles and Graphene Oxide for the Knoevenagel Condensation of Aldehydes with Malononitrile
Lolak, Nabih; Kuyuldar, Esra; Burhan, Hakan; Göksu, Haydar; Akocak, Süleyman; Şen, Fatih (Amer Chemical SOC, 2019)Herein, we have described uniformly dispersed palladium-nickel nanoparticles furnished on graphene oxide (GO-supported PdNi nanoparticles) as a powerful heterogeneous nanocatalyst for the promotion of Knoevenagel reaction ... -
Enhanced Electrocatalytic Activity and Durability of PtRu Nanoparticles Decorated on rGO Material for Ethanol Oxidation Reaction
Kuyuldar, Esra; Burhan, Hakan; Şavk, Aysun; Güven, Buse; Özdemir, Ceren; Şahin, Sultan; Khan, Anish (Springer International Publishing, 2019)Direct ethanol fuel cells (DEFCs) use ethanol as a fuel to obtain energy in a low temperature. This makes them one of the most important among fuel cells. However, in order to increase the efficiency of these fuel cells, ... -
Ex situ synthesis and characterization of a polymer-carbon nanotube-based hybrid nanocatalyst with one of the highest catalytic activities and stabilities for the hydrolytic dehydrogenation of hydrazine-borane at room temperature conditions
Demirkan, Buse; Kuyuldar, Esra; Karataş, Yaşar; Gülcan, Mehtmet; Şen, Fatih (Elsevier, 2019)In this study, a facile ex situ synthesis of a polyaniline-multiwalled carbon nanotube-based Pt nanocatalyst (Pt@PANI-MWCNT)with an average particle size of 3.18 ± 0.12 nm was performed successfully. The obtained Pt@PANI-MWCNT ... -
Graphene Oxide-Chitosan Furnished Monodisperse Platinum Nanoparticles as Importantly Competent and Reusable Nanosorbents for Methylene Blue Removal
Savk, Aysun; Sen, Betul; Demirkan, Buse; Kuyuldar, Esra; Aygun, Aysenur; Nas, Mehmet Salih; Sen, Fatih (MATERIALS RESEARCH FORUM LLC, 2018)In this study, the microwave assisted methodology was employed to produce uniformly distributed platinum nanoparticles decorated with graphane oxide-chitosan. The capacity of methylene blue removal of these nanohybrids at ... -
Highly active and reusable nanocomposites for hydrogen generation
Şen, Betül; Kuyuldar, Esra; Demirkan, Buse; Şavk, Aysun; Aygün, Ayşenur; Şen, Fatih (Woodhead Publ LTD, 2019)In this study, a simple and reproducible production method at room temperature of the monodispersed Pd-Ni nanoparticles supported on activated carbon (AC) was explained. To produce these nanoparticles, a sodium hydroxide-assisted ... -
Magnetic nanocomposites decorated on multiwalled carbon nanotube for removal of Maxilon Blue 5G using the sono-Fenton method
Nas, Mehmet Salih; Kuyuldar, Esra; Demirkan, Buse; Çalımlı, Mehmet Harbi; Demirbaş, Özkan; Şen, Fatih (Nature Publishing Group, 2019)Herein, multiwalled carbon nanotube-based Fe3O4 nano-adsorbents (Fe3O4@MWCNT) were synthesized by ultrasonic reduction method. The synthesized nano-adsorbent (Fe3O4@MWCNT) exhibited efficient sonocatalytic activity to ... -
Monodisperse Pt-Co/GO anodes with varying Pt: Co ratios as highly active and stable electrocatalysts for methanol electrooxidation reaction
Burhan, Hakan; Ay, Hasan; Kuyuldar, Esra; Şen, Fatih (Nature Research, 2020)The intense demand for alternative energy has led to efforts to find highly efficient and stable electrocatalysts for the methanol oxidation reaction. For this purpose, herein, graphene oxide-based platinum-cobalt nanoparticles ... -
Monodisperse PVP-stabilized nanoclusters as highly efficient and reusable catalysts for the dehydrogenation of dimethly ammonia-borane (DMAB)
Şen, Betül; Şen, Özde; Demirkan, Buse; Aygün, Ayşenur; Kuyuldar, Esra; Şavk, Aysun; Şen, Fatih (Woodhead Publ LTD, 2019)In this scientific work, we report the production of PVP (poly(N-vinyl-pyrrolidone))-based, carbon-supported ruthenium nanomaterials (Ru/PVP@C) (3.48 ± 0.35 nm) and their advantages as catalysts in DMAB dehydrogenation. ... -
Monodisperse thiourea functionalized graphene oxide-based PtRu nanocatalysts for alcohol oxidation
Kuyuldar, Esra; Polat, Su Selda; Burhan, Hakan; Mustafaov, Sibel Demiroğlu; İyidoğan, Ayşegül; Şen, Fatih (Nature Research, 2020)Addressed herein, thiourea functionalized graphene oxide-based PtRu nanocatalysts (PtRu@T/GO) has been synthesized and characterized by several techniques and performed for methanol oxidation reactions as novel catalysts. ... -
Nanocarbon-supported catalysts for the efficient dehydrogenation of dimethylamine borane
Şen, Betül; Akyıldız, Burcu; Aygün, Ayşenur; Kuyuldar, Esra; Demirkan, Buse; Şen, Fatih (Woodhead Publ Ltd, 2019)In this work, graphene oxide (GO)-supported ruthenium nanomaterials (Ru@GO NPs) were used as catalysts in dimethylamine borane (DMAB) dehydrogenation. Raman spectroscopy, X-ray diffraction (XRD), high-resolution transmission ... -
Novel Chitosan-Based Nanocomposites for Dye Removal Applications
Savk, Aysun; Sen, Betul; Demirkan, Buse; Kuyuldar, Esra; Aygun, Aysenur; Nas, Mehmet Salih; Sen, Fatih (MATERIALS RESEARCH FORUM LLC, 2018)Monodisperse Pd nanoparticles (Pd NPs@CGO) decorated Chitosan-graphene oxide (CGO) are produced to get a nanoadsorbent material to remove methylene blue (MB) from aqueous solutions. X-ray diffraction (XRD), transmission ... -
Polypyrrole-multi walled carbon nanotube hybrid material supported Pt NPs for hydrogen evolution from the hydrolysis of MeAB at mild conditions
Karataş, Yaşar; Kuyuldar, Esra; Acıdereli, Hilal; Gülcan, Mehmet; Şen, Fatih (Nature Research, 2019)Herein, we report a facile method for the preparation of polypyrrole-multi walled carbon nanotube hybrid material including Pt nanoparticles (Pt@PPy-MWCNT NPs) and the use in methylamine borane (MeAB) for hydrolysis reaction ... -
Single-walled carbon nanotube supported Pt-Ru bimetallic superb nanocatalyst for the hydrogen generation from the methanolysis of methylamine-borane at mild conditions
Gökırmak Söğüt, Eda; Acıdereli, Hilal; Kuyuldar, Esra; Karataş, Yaşar; Gülcan, Mehmet; Şen, Fatih (Nature Publishing Group, 2019)Several metal nanoparticle based catalysts have been synthesized for catalyzing the hydrogen production process by hydrolysis of methylamine-borane (MeAB). However, there was only one study that catalyzes the producing of ... -
Synergistic and antagonistic effects of phenylalanine and various antibiotics on the growth of pathogenic bacteria
Şen, Fatih; Ganim, Mohamed Abdulhamid; Baloğlu, Mehmet Cengiz; Aygün, Ayşenur; Sayıner, Hakan Sezgin; Çelik Altunoğlu, Yasemin; Kandemirli, Fatma; Demirkan, Buse; Kuyuldar, Esra; Bulut, Ela (Springer, 2019)Broad-spectrum antibiotics have been widely used in the treatment of many systemic and local infections in humans and animals. Herein, we aimed to determine the synergistic and antagonistic effects of phenylalanine with ... -
Synthesis, characterization, and applications of hemicellulose based eco-friendly polymer composites
Ballı, Büşra; Çalımlı, Mehmet Harbi; Kuyuldar, Esra; Şen, Fatih (Springer International Publishing, 2019)This book presents emerging economical and environmentally friendly polymer composites that are free of the side effects observed in traditional composites. It focuses on eco-friendly composite materials using granulated ...
