Boosting the photocatalytic properties of NaTaO3 by coupling with AgBr
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Published:2022-11-10
Issue:3
Volume:22
Page:549-566
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ISSN:1474-9092
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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:
Puga F., Navío J. A.ORCID, Hidalgo M. C.
Abstract
AbstractAgBr/NaTaO3 composites, with different molar % of NaTaO3 (Br/NTO(X%)), have been synthesized by simple precipitation methods; bare NaTaO3 was synthesized by hydrothermal procedure, while AgBr was synthesized by a precipitation procedure using cetyl-tri-methyl-ammonium bromide (CTAB) and AgNO3. Samples have been characterized by X-ray diffraction (XRD), N2 adsorption, UV–vis diffuse reflectance spectroscopy (DRS), Fourier-transform infrared spectroscopy (FT-IR), Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Photocatalytic activity of the as-prepared photo-catalysts was evaluated through photocatalytic degradation of rhodamine B (RhB), methyl orange (MO) and caffeic acid (CAFA) under UV and visible illumination. Single AgBr material and Br/NTO(X%) composites displayed the ability to absorb light in the visible region, while NaTaO3 is only photoactive under UV irradiation. Based on the position of conduction and valence bands of AgBr and NaTaO3, the heterojunction between these two photo-catalysts corresponds to a type II junction. In the case of photocatalytic degradation of RhB and CAFA, Br/NTO(x%) composites have highest photocatalytic activity than that obtained by both parental materials under the same operational conditions. AgBr and Br/NTO(x%) composites achieve a fast degradation of MO, together with a considerable adsorption capacity, attributed to the presence of a remaining amount of residual CTAB on the AgBr surface. In summary, coupling AgBr with NaTaO3 improves the photocatalytic activity under both UV and visible illumination with respect to the parental components, but the performance of the composites is highly dependent on the type of substrate to be degraded and the illumination conditions.
Funder
Universidad de Sevilla
Publisher
Springer Science and Business Media LLC
Subject
Physical and Theoretical Chemistry
Reference56 articles.
1. Wang, H., Li, X., Zhao, X., Li, C., Song, X., Zhang, P., & Huo, P. (2022). A review on heterogeneous photocatalysis for environmental remediation: From semiconductors to modification strategies, Chinese. Journal of Catalysis, 43, 178–214. 2. Youssef, Z., Colombeau, L., Yesmurzayeva, N., Baros, F., Vanderesse, R., Hamieh, T., Toufaily, J., Frochot, C., & Roques-Carmes, T. (2018). Dye-sensitized nanoparticles for heterogeneous photocatalysis: Cases studies with TiO2, ZnO, fullerene and graphene for water purification. Dyes and Pigments, 159, 49–71. 3. Dong, S., Feng, J., Fan, M., Pi, Y., Hu, L., Han, X., Liu, M., Sun, J., & Sun, J. (2015). Recent developments in heterogeneous photocatalytic water treatment using visible light-responsive photocatalysts: a review. RSC Advances, 5, 14610–14630. 4. Reddy, P. A. K., Reddy, P. V. L., Kwon, E., Kim, K. H., Akter, T., & Kalagara, S. (2016). Recent advances in photocatalytic treatment of pollutants in aqueous media. Environment International, 91, 94–103. 5. Miklos, D. B., Remy, C., Jekel, M., Linden, K. G., Drewes, J. E., & Hübner, U. (2018). Evaluation of advanced oxidation processes for water and wastewater treatment – A critical review. Water Research, 139, 118–131.
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