Synthesis, Optical Properties and Photocatalytic Testing of Sol–Gel TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/PVP Nanopowders
In this study, TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/polyvinylpyrrolidone (PVP) hybrids were prepared using the sol–gel method. The iron content in the synthesized samples was 10 and 20 wt%. The influence of PVP on the phase transformation, morphology and op...
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MDPI AG
2025-05-01
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| Online Access: | https://www.mdpi.com/2673-3269/6/2/22 |
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| author | Stefani Petrova Yoanna Kostova Martin Tsvetkov Angelina Stoyanova Hristina Hitkova Polya Marinovska Albena Bachvarova-Nedelcheva |
| author_facet | Stefani Petrova Yoanna Kostova Martin Tsvetkov Angelina Stoyanova Hristina Hitkova Polya Marinovska Albena Bachvarova-Nedelcheva |
| author_sort | Stefani Petrova |
| collection | DOAJ |
| description | In this study, TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/polyvinylpyrrolidone (PVP) hybrids were prepared using the sol–gel method. The iron content in the synthesized samples was 10 and 20 wt%. The influence of PVP on the phase transformation, morphology and optical properties of the as-prepared hybrids was characterized by various physicochemical methods—XRD analysis, UV–Vis spectroscopy, IR spectroscopy and SEM. The obtained sol–gel powders were tested for photocatalytic activity against tetracycline hydrochloride in distilled water under ultraviolet and simulated solar light illumination. The obtained results were compared to commercial TiO<sub>2</sub> P25 (Evonik). The investigated samples exhibited good photocatalytic efficiency for the degradation of tetracycline hydrochloride; however, better activity was demonstrated by the 90TiO<sub>2</sub>-10Fe<sub>2</sub>O<sub>3</sub>/PVP sample. The latter one displayed weak antibacterial action against <i>E. coli</i> ATCC 25922 in the presence of UVA light. |
| format | Article |
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| institution | Kabale University |
| issn | 2673-3269 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Optics |
| spelling | doaj-art-9ff9197fbc884db6944f7ad5f052fbac2025-08-20T03:27:21ZengMDPI AGOptics2673-32692025-05-01622210.3390/opt6020022Synthesis, Optical Properties and Photocatalytic Testing of Sol–Gel TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/PVP NanopowdersStefani Petrova0Yoanna Kostova1Martin Tsvetkov2Angelina Stoyanova3Hristina Hitkova4Polya Marinovska5Albena Bachvarova-Nedelcheva6Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 11, 1113 Sofia, BulgariaInstitute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”, Bulgarian Academy of Sciences, Shipchenski Prohod Str., 67, 1574 Sofia, BulgariaFaculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, 1164 Sofia, BulgariaDepartment Chemistry and Biochemistry, Faculty of Pharmacy, Medical University, 1 Kliment Ohridski St., 5800 Pleven, BulgariaDepartment Chemistry and Biochemistry, Faculty of Pharmacy, Medical University, 1 Kliment Ohridski St., 5800 Pleven, BulgariaDepartment Chemistry and Biochemistry, Faculty of Pharmacy, Medical University, 1 Kliment Ohridski St., 5800 Pleven, BulgariaInstitute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 11, 1113 Sofia, BulgariaIn this study, TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/polyvinylpyrrolidone (PVP) hybrids were prepared using the sol–gel method. The iron content in the synthesized samples was 10 and 20 wt%. The influence of PVP on the phase transformation, morphology and optical properties of the as-prepared hybrids was characterized by various physicochemical methods—XRD analysis, UV–Vis spectroscopy, IR spectroscopy and SEM. The obtained sol–gel powders were tested for photocatalytic activity against tetracycline hydrochloride in distilled water under ultraviolet and simulated solar light illumination. The obtained results were compared to commercial TiO<sub>2</sub> P25 (Evonik). The investigated samples exhibited good photocatalytic efficiency for the degradation of tetracycline hydrochloride; however, better activity was demonstrated by the 90TiO<sub>2</sub>-10Fe<sub>2</sub>O<sub>3</sub>/PVP sample. The latter one displayed weak antibacterial action against <i>E. coli</i> ATCC 25922 in the presence of UVA light.https://www.mdpi.com/2673-3269/6/2/22sol–gelTiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/PVPcharacterizationphotocatalytic properties |
| spellingShingle | Stefani Petrova Yoanna Kostova Martin Tsvetkov Angelina Stoyanova Hristina Hitkova Polya Marinovska Albena Bachvarova-Nedelcheva Synthesis, Optical Properties and Photocatalytic Testing of Sol–Gel TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/PVP Nanopowders Optics sol–gel TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/PVP characterization photocatalytic properties |
| title | Synthesis, Optical Properties and Photocatalytic Testing of Sol–Gel TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/PVP Nanopowders |
| title_full | Synthesis, Optical Properties and Photocatalytic Testing of Sol–Gel TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/PVP Nanopowders |
| title_fullStr | Synthesis, Optical Properties and Photocatalytic Testing of Sol–Gel TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/PVP Nanopowders |
| title_full_unstemmed | Synthesis, Optical Properties and Photocatalytic Testing of Sol–Gel TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/PVP Nanopowders |
| title_short | Synthesis, Optical Properties and Photocatalytic Testing of Sol–Gel TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/PVP Nanopowders |
| title_sort | synthesis optical properties and photocatalytic testing of sol gel tio sub 2 sub fe sub 2 sub o sub 3 sub pvp nanopowders |
| topic | sol–gel TiO<sub>2</sub>-Fe<sub>2</sub>O<sub>3</sub>/PVP characterization photocatalytic properties |
| url | https://www.mdpi.com/2673-3269/6/2/22 |
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