Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/819
Title: Hydrothermal synthesis of pseudocubic BaTiO3 nanoparticles using TiO2 nanofibers: Study on photocatalytic and dielectric properties
Authors: Kaya, Ismail Cihan
Kalem, Volkan
Akyıldız, Hasan
Keywords: Batio3
Electrospinning
Hydrothermal Synthesis
Photocatalytic Activity
Nanotube Arrays
Crystal-Structure
Titanate
Temperature
Perovskite
Ferroelectricity
Degradation
Particles
Issue Date: 2019
Publisher: WILEY
Abstract: In this study, TiO2 nanofibers were fabricated via the electrospinning method followed by air annealing. Then, Ti-requirement in the conventional hydrothermal synthesis of BaTiO3 stoichiometry was supplied by using these nanofibers. The microstructural and compositional properties of BaTiO3 nanoparticles were studied using SEM, TEM, XRD, XPS, and Raman spectroscopy. The structural analysis showed that the cubic symmetry was the dominant one in the BaTiO3 nanoparticles, whereas Raman spectroscopy indicated the coexistence of cubic symmetry with the tetragonal polymorph. The nanoparticles displayed higher photocatalytic reactivity under UV-A light compared to visible irradiation during decomposition of methylene blue dye and reached 24.2% and 18.8% degradation, respectively, after 1 hour. Furthermore, the dielectric properties were investigated using sintered compacts of these nanoparticles. Among the employed temperatures for sintering, the highest relative density (90%) and dielectric constant (2165 at 1 MHz) were obtained at 1250 degrees C and 5 hours. This study revealed that the electrospun TiO2 nanofiber precursor can successfully be used for the production of nanoscale barium titanate particles suitable for various applications.
URI: https://doi.org/10.1111/ijac.13225
https://hdl.handle.net/20.500.13091/819
ISSN: 1546-542X
1744-7402
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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