Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/11147/7148

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Author: search.filters.author.Balci-Cagiran, Ozge

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Now showing 1 - 4 of 4
  • Editorial
    Editorial on: 22nd International Symposium on Boron, Borides and Related Materials (ISBB 2024)
    (Elsevier, 2025) Balci-Cagiran, Ozge; Yucel, Onuralp; Somer, Mehmet
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Plasma-Enhanced Cvd Synthesis and Cytotoxic Evaluation of Graphitic Carbon Embedded – Fe3O4 Nanoparticles
    (Elsevier Sci Ltd, 2025) Balci-Cagiran, Ozge; Mertdinc-Ulkuseven, Siddika; Solati, Navid; Onbasli, Kubra; Yagci-Acar, Havva; Agaogullari, Duygu
    This study reports the synthesis of graphitic carbon embedded - Fe3O4 nanoparticles using a novel method that enables a low-temperature rapid process and includes cytotoxicity tests to evaluate their potential use in biomedical applications. In this study, graphitic carbon was grown on Fe3O4 core using a plasma-enhanced chemical vapor deposition (PE-CVD) system under an Ar-H-2-CH4 gas plasma at 650 degrees C for 15 min. X-ray diffractometry (XRD) and Raman spectroscopy investigations confirmed that Fe3O4 nanoparticles were embedded in graphitic carbon (Fe3O4@C). Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS), along with transmission electron microscopy (TEM) equipped with EDS, also supported the carbon formation and nano-sized structure of the synthesized particles. Fe3O4@C nanoparticles exhibited soft magnetic properties with saturation magnetization (M-s) and coercivity (H-c) values of 69.27 emu/g and 97 Oe, respectively. Cytotoxicity assessment on HeLa and MCF7 cancer cells suggested biocompatibility at and below a dose of 100 mu g/mL after 24 h of exposure but a drop in cell viability at higher doses and longer incubation times, more on cancer cell lines than the healthy L929 cells. These results suggest that Fe3O4@C nanoparticles might be potential candidates for biomedical applications, including drug delivery, photothermal therapy, and magnetically-triggered operations.
  • Article
    Durable ZrB2–ZrC Composite Materials as Advanced Electrodes for High-Performance Supercapacitors
    (Amer Chemical Soc, 2025) Paksoy, Aybike; Gungor, Ahmet; Yildirim, Ipek Deniz; Arabi, Seyedehnegar; Erdem, Emre; Balci-Cagiran, Ozge
    Boride and carbide-based materials attract increasing attention as promising options for energy storage applications. This research focuses on synthesizing pure boride and carbide compounds of zirconium (ZrB2 and ZrC) and their composite powders using mechanical activation-assisted route and subsequent heating processes. The chemical and microstructural characterization results indicate that the synthesized composite powders are of high purity, possess submicron-scale particle sizes (below 400 nm), and exhibit a high surface area of up to 9.41 m2/g. Supercapacitor devices, using the resulting powders as symmetrical electrodes, exhibit high energy density values ranging from 5.8 to 8.8 Wh/kg. The ZrB2-15 wt % ZrC composite sample achieves the highest power density at 155 W/kg, compared to 118 W/kg for the pure ZrB2 sample. Cycling tests demonstrate exceptional capacitance retention (99.4-99.9%) and cyclic stability, even after 5000 cycles, highlighting the high durability of the composite samples. These findings show that ZrB2-ZrC composites exhibit high energy and power density values and excellent cycling performance, making them strong candidates for use in high-performance supercapacitor devices.
  • Article
    Citation - WoS: 2
    Citation - Scopus: 2
    Synthesis of Oleic Acid - Coated Zinc - Doped Iron Boride Nanoparticles for Biomedical Applications
    (Elsevier Sci Ltd, 2024) Paksoy, Aybike; Aydemir, Duygu; Somer, Mehmet; Ulusu, Nuriye Nuray; Balci-Cagiran, Ozge
    Although various iron-based magnetic materials have been extensively studied in biomedical field for many years, iron boride compounds with interesting chemical and magnetic properties are relatively less explored, and their potential applications are not as widely known. In this study, the synthesis, coating, surface modification, and cytotoxicity tests of the Fe-Zn-B system were presented. Iron boride-based nanoparticles (NPs) containing elemental zinc (Zn) were developed by using a direct chemical synthesis of FeCl3, 3 , ZnCl2 2 and NaBH4, 4 , and investigated for potential use in biomedical applications. Powders having the phases of pure FeB with small amount of elemental Zn were obtained with a uniform morphology and an average particle size of 68 nm. The NPs were then coated with oleic acid (OA) and surface modified with sodium tricitrate, to increase their stability and biocompatibility, and well-dispersed NPs were obtained with sizes below 30 nm. TEM investigations revealed the presence of hybrid clusters with nanoparticle - OA structures, indicating that FeB nanoparticles were stabilized by being embedded in OA clusters, forming both agglomerated sub-micron and free nano-sized structures. Obtained NPs showed ferromagnetic property, with a saturation magnetization of 25.9 emu/g and a low coercivity of 90 Oe. As a result of testing different types of healthy and cancer cell lines with NPs, Zn-doped-FeB@OA NPs exhibited a high biocompatibility. Results suggested that highly biocompatible and magnetic OA-coated Zn-doped FeB particles can be potential candidates for biomedical applications such as medical imaging or drug delivery systems.