Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/13824
Title: Formation of monolithic SrTiO3-TiO2 ceramic heterostructures by reactive hydrothermal sintering
Authors: Karacasulu, Levent
Kartal, Uğur
İçin, Öykü
Bortolotti, Mauro
Biesuz, Mattia
Ahmetoğlu, Çekdar Vakıf
Keywords: Cold sintering
Electroceramics
Photocatalysis
RHLPD
Sodium hydroxide
Strontium titanates
Densifications
Titanium dioxide
Issue Date: 2023
Publisher: Elsevier
Abstract: In a one-pot approach, monolithic SrTiO3-TiO2 ceramic heterostructures were obtained using the reactive hydrothermal liquid phase densification (rHLPD). Structural, morphological, and photocatalytic properties of the obtained ceramics were analyzed. The relative density of the formed components reached about 80% with reaction time, temperature, and NaOH concentration variation. It was observed via Rietveld refinement that there was no XRD detectable phase other than TiO2 and SrTiO3 in the final structure. The monolithic SrTiO3-TiO2 ceramics obtained by hydrothermal reaction at 120 °C for 24 h in 1 M NaOH concentration showed a dielectric constant being around 500, and the dielectric loss was below 0.25 at frequencies higher than 10 kHz. The SrTiO3-TiO2 heterostructured monoliths having only 20 vol% total porosity and low specific surface area, demonstrated ∼60% efficiency (in 5 h) in degrading Methylene Blue photo-catalytically. © 2023 Elsevier Ltd
URI: https://doi.org/10.1016/j.jeurceramsoc.2023.07.012
https://hdl.handle.net/11147/13824
ISSN: 0955-2219
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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