Please use this identifier to cite or link to this item: https://physrep.ff.bg.ac.rs/handle/123456789/1014
Title: TiO<inf>2</inf>/Bi<inf>2</inf>O<inf>3</inf> coatings formed by plasma electrolytic oxidation of titanium for photocatalytic applications
Authors: Stojadinović, Stevan 
Radić, Nenad
Tadić, Nenad B. 
Vasilić, Rastko 
Tsanev, Aleksander
Issue Date: 1-Mar-2022
Journal: Journal of Materials Science: Materials in Electronics
Abstract: 
TiO2 coatings modified by Bi2O3 particles were successfully formed by plasma electrolytic oxidation (PEO) process of titanium in supporting electrolyte (10 g/L Na3PO4·10H2O) with the addition of Bi2O3 particles. The morphology, crystal structure, chemical composition, and optical properties of formed PEO coatings were investigated by scanning electron microscopy, energy-dispersive spectroscopy, X-ray fluorescence, X-ray diffraction, X-ray photoelectron spectroscopy, UV–Vis diffuse reflectance spectroscopy, and photoluminescent techniques. The photodegradation of methyl orange under simulated sunlight condition was used to determine the potential of TiO2/Bi2O3 coatings in photocatalysis. The photocatalytic activity (PA) of TiO2/Bi2O3 coatings is higher than that of pure TiO2. PA of TiO2/Bi2O3 coatings is highly dependent on the amount of Bi2O3 particles in the supporting electrolyte and the highest PA was observed for TiO2/Bi2O3 coating formed in supporting electrolyte with the addition of 1.2 g/L of Bi2O3 particles. Enhanced PA is related to the reduction of photo-generated electron/hole recombination rate as a result of TiO2 and Bi2O3 coupling.
URI: https://physrep.ff.bg.ac.rs/handle/123456789/1014
ISSN: 0957-4522
DOI: 10.1007/s10854-021-07637-0
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