Photocatalytic activity of P-doped TiO2 photocatalyst
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Published:2023-01-19
Issue:6
Volume:22
Page:1223-1231
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ISSN:1474-905X
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Container-title:Photochemical & Photobiological Sciences
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language:en
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Short-container-title:Photochem Photobiol Sci
Author:
Rescigno Raffaella, Sacco Olga, Venditto VincenzoORCID, Fusco Alessandra, Donnarumma Giovanna, Lettieri Mariateresa, Fittipaldi Rosalba, Vaiano Vincenzo
Abstract
AbstractIn this study, P-doped TiO2 photocatalysts with different molar percentages (in the range 0.071–1.25 mol %) of the non-metallic element were prepared and their photocatalytic activity under visible light irradiation was tested. All achieved samples were characterized by XRD, Raman, UV–Vis DRS and SEM–EDX techniques. XRD and Raman analysis showed that all doped photocatalysts were in anatase phase and evidenced that P ions were successfully incorporated into the TiO2 crystal lattice, affecting also the crystallinity degree of the P-doped TiO2 photocatalysts. Noticeably, the UV–Vis DRS spectra evidenced that the highest redshift in absorption edge was observed for the photocatalyst with the lowest P content (0.071PT), which showed also the lowest bandgap (2.9 eV). The photocatalytic performances of all P-doped TiO2 samples were compared with that of commercial TiO2 by evaluating the decolorization of methylene blue (MB) dye under visible light irradiation. Results showed that phosphorus doping strongly promoted photocatalytic activity in the presence of visible light. Furthermore, the most active photocatalyst in visible light tests (0.071PT) also showed better photocatalytic activity than commercial TiO2 in the decolorization of MB under simulated sunlight irradiation. Finally, 0.071PT photocatalyst was preliminarily tested against Escherichia coli (E. coli) under simulated solar light, showing an inactivation efficiency of 90% after 2 h of treatment time.
Graphical abstract
Funder
Università degli Studi di Salerno
Publisher
Springer Science and Business Media LLC
Subject
Physical and Theoretical Chemistry
Reference36 articles.
1. Lee, J., & Gouma, P. I. (2012). Sol-Gel processed oxide photocatalysts. In M. Aparicio, A. Jitianu, & L. C. Klein (Eds.), Sol-Gel processing for conventional and alternative energy (pp. 217–237). Boston, MA: Springer US. https://doi.org/10.1007/978-1-4614-1957-0_11 2. Meng, X.; Eluagwule, B.; Wang, M.; Wang, L.; Zhang, J. 2020 Solar photocatalysis for environmental remediation. In handbook of smart photocatalytic materials. Elsevier, pp 183–195. https://doi.org/10.1016/B978-0-12-819049-4.00013-1 3. Schneider, J., Matsuoka, M., Takeuchi, M., Zhang, J., Horiuchi, Y., Anpo, M., & Bahnemann, D. W. (2014). Understanding TiO 2 photocatalysis: mechanisms and materials. Chemical Reviews, 114(19), 9919–9986. https://doi.org/10.1021/cr5001892 4. Yadav, H. M., Kim, J.-S., & Pawar, S. H. (2016). Developments in photocatalytic antibacterial activity of nano TiO2: A review. Korean Journal of Chemical Engineering, 33(7), 1989–1998. https://doi.org/10.1007/s11814-016-0118-2 5. Pelaez, M., Nolan, N. T., Pillai, S. C., Seery, M. K., Falaras, P., Kontos, A. G., Dunlop, P. S. M., Hamilton, J. W. J., Byrne, J. A., O’Shea, K., Entezari, M. H., & Dionysiou, D. D. (2012). A review on the visible light active titanium dioxide photocatalysts for environmental applications. Applied Catalysis B: Environmental, 125, 331–349. https://doi.org/10.1016/j.apcatb.2012.05.036
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