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Browsing by Author "Demirel, Serkan"

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    Article
    Local Peoples of the South- Eastern Black Sea in the 1st Millennium Bc: New Archaeological Findings
    (Mega Publishing House, 2022) Demirel, Serkan; Caliskan Akgul, Hulya; Kilic, Sinan
    The Trabzon Archaeological Survey Project was initiated in 2018 with the aim of researching the pre-Classical Period in the south-eastern Black Sea region. This is a period which had not received much attention previously from researchers. In the first two years of the field researches, some archaeological sites (Kalecik/Mile Castle, Konakduzu area, ruins in the Horhor and Sumaha hills) within the boundaries of the Macka district have been discovered, and they were attributed to an early period. These archaeological sites and some of the material remains obtained here are thought to belong to the local peoples of the region mentioned in ancient Greek and Roman texts. The survey project reveals some significant results in compare of descriptions about the local peoples in ancient texts and archaeological evidence of the contemporary neighboring cultures. Thus, it can be said that for the first time, archaeological evidence about the ancient peoples in the region has been obtained.
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    Synthesis, Characterization, and Utilization of Niceo2@f-mwcnt/Eda Nanoparticles as Electrode Materials for Supercapacitor Application
    (Pergamon-elsevier Science Ltd, 2023) Yildiz, Adnan; Demirel, Serkan; Nas, Mehmet Salih; Calimli, Mehmet Harbi
    Metal oxide and carbon nanotube-based materials are widely preferred in supercapacitor and electrochemical sensor applications due to their interesting physicochemical structure. In this paper, we report the synthesis, characterization, and utilization of NiCeO2@f-MWCNT/EDA nanoparticles as electrode materials for supercapacitor applications. The characterization studies of NiCeO2@f-MWCNT/EDA nanomaterials were performed using X-ray diffraction (XRD), Transmission electron microscope (TEM), and Raman spectroscopy apparatus. The characterization methods revealed a good distribution of NiCeO2 on f-MWCNT/EDA and formed a new structure of NiCeO2@f-MWCNT/EDA nanoparticles. Electrochemical studies of NiCeO2@f-MWCNT/EDA nanoparticles showed a significant specific capacitance of between 2385 and 603 Fg  1 with good cyclic stability of 1000 cycles with capacity retention between 42% and 1.4% at 10 mV/s scan rate. The obtained results reveal that the prepared NiCeO2@f-MWCNT/EDA nanoparticles are promising electrode materials for supercapacitor devices.