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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 |
Appears in Collections: | Journal Article |
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