PEROVSKITAS Y FOTOCATÁLISIS: INNOVACIÓN EN EL DESARROLLO DE TECNOLOGÍAS VERDES PARA AGUA LIMPIA
Palabras clave:
semiconductores, fotocatálisis, perovskitasResumen
La contaminación del agua por compuestos orgánicos, como colorantes y fármacos, representa un reto creciente para el medio ambiente y la salud humana. Al comparar los distintos métodos de tratamiento de aguas residuales, la fotocatálisis sobresale como una de las alternativas más prometedoras; este proceso aprovecha la energía de la luz para degradar contaminantes en moléculas simples e inocuas. Para lograrlo, es fundamental el desarrollo de semiconductores con propiedades ópticas adecuadas, capaces de inducir reacciones de oxidación-reducción bajo irradiación. De esta manera, el uso de perovskitas de SrTiO3 y CaTiO3 como fotocatalizadores se presenta como una estrategia innovadora, eficiente y sostenible para enfrentar el desafío de los contaminantes emergentes en el agua, contribuyendo al avance hacia tecnologías verdes y resilientes. En este trabajo se presenta el panorama general de los procesos de fotocatálisis y el uso de perovskitas como fotocatalizadores para la remoción de contaminantes de medios acuosos.
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Sakata, T., Yoshiyuki, R., Urushidani, S., Tarutani, N., Katagiri, K., & Inumaru, K. (2022). Ammonia-free synthesis and color tuning of oxynitride perovskite SrTaO2N-SrTiO3 solid solution by using alkoxide-derived Ta-Ti binary oxide gel precursors. Journal of Sol-Gel Science and Technology, 104(3): 685–693. https://doi.org/10.1007/s10971-022-05801-4
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Song, Y.-X., Ma, W.-Q., Chen, J.-J., Xu, J., Mao, Z.-Y., & Wang, D.-J. (2021). Photocatalytic activity of perovskite SrTiO3 catalysts doped with variable rare earth ions. Rare Metals, 40(5): 1077–1085. https://doi.org/10.1007/s12598-020-01674-0
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Yakout, A. A., Basha, M. T., Al-Raimi, D. S., Aljadaani, A. H., & Ali Zainy, F. M. (2025). Synergistic impact of Cu and MnO2 nanoparticles in Cu/MnO2/chitosan/graphene oxide hybrid nanocomposite for improved antibacterial activity and fast adsorption of environmentally relevant anionic and cationic dyes from industrial wastewater. International Journal of Biological Macromolecules: 144839. https://doi.org/10.1016/j.ijbiomac.2025.144839
Yan, Y., Yang, H., Yi, Z., Xian, T., Li, R., & Wang, X. (2019). Construction of Ag2S@CaTiO3 heterostructure photocatalysts for enhanced photocatalytic degradation of dyes. Desalination and Water Treatment, 170, 349–360. https://doi.org/10.5004/dwt.2019.24747
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Zhao, L., Deng, J., Sun, P., Liu, J., Ji, Y., Nakada, N., Qiao, Z., Tanaka, H., & Yang, Y. (2018). Nanomaterials for treating emerging contaminants in water by adsorption and photocatalysis: Systematic review and bibliometric analysis. Science of The Total Environment, 627: 1253–1263. https://doi.org/10.1016/j.scitotenv.2018.02.006
