Synthesis of TiOF2/CuO particles via coprecipitation method and their further thermal transformation to F–TiO2/CuO
Artykuł w czasopiśmie
MNiSW
100
Lista 2024
| Status: | |
| Autorzy: | Sofronov Dmitry, Rucki Mirosław, Lebedynskiy Alexey, Mateychenko Pavel, Minenko Sergii, Shaposhnyk Anna, Siemiątkowski Zbigniew, Józwik Jerzy, Tofil Arkadiusz |
| Dyscypliny: | |
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| Rok wydania: | 2024 |
| Wersja dokumentu: | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 3 |
| Wolumen/Tom: | 45 |
| Strony: | 1 - 16 |
| Web of Science® Times Cited: | 0 |
| Bazy: | Web of Science |
| Efekt badań statutowych | NIE |
| Finansowanie: | his work was supported by the Ukrainian National Academy of Sciences, grant numbers 0122U200071, 0120U101777, and co-financed within the project PM/SP/0064/2021/1 titled “Intelligent measurement techniques in the diagnosis and forecasting of shaft cracks and their dimensional and shape accuracy”, funded by the Ministry of Education and Science (Poland) as a part of the Polish Metrology Programme and co-financed within the project PM-II/SP/0040/2024/02 titled “A machine learning-aided multisensor system for thermomechanical measurements and in-depth analysis of the surface layer in aircraft alloys”, funded by the Ministry of Education and Science (Poland) as a part of the Polish Metrology Programme II. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Witryna wydawcy |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 4 września 2024 |
| Abstrakty: | angielski |
| The paper presents a novel, low-cost and simple route for synthesis of TiOF2/CuO and F–TiO2/CuO out of fluoride solutions. The obtained materials after calcination can be used in various photocatalytic applications, e.g. in water treatment. It was demonstrated that control of synthesis process parameters, such as pH, allowed for synthesis of particles with different phase composition and properties. Thus, pH64 environment had created conditions for formation of two structures of TiOF2, hexagonal and cubic ones, as well as CuTiF6(H2O)4. Increase of Cu content promoted increase of the cubic c–TiOF2 phase. When the solutions exhibited pH > 5, the synthesized particles consisted of (NH4)2TiF6 · 2H2O, (NH4)3TiF7, and (NH4)2CuF4 · 4H2O. Calcination above 300 ◦C provided formation of TiOF2/CuO particles, while elevated temperatures of 600 ◦C ensured appearance of F–TiO2/CuO material. It was found that higher copper concentrations resulted with higher fluoride percentage after calcination at 600 ◦C. It was also demonstrated that F–TiO2/CuO particles synthesized at đÍ64 exhibited energy band gap Eg of 3.3–3.25 eV, which decreased down to 2.85 eV for higher copper(II) oxide concentrations of 10 wt.%. Notably, the particles F–TiO2/CuO synthesized at pH > 5 exhibited band gap Eg of 3.4–3.5 eV, which decreased down to 2.9 eV for higher CuO concentrations. |
