Publicación: A PHOTOCHEMICAL ROUTE IN THE SYNTHESIS AND CHARACTERIZATION OF LA2TI2O7 AND LA2TI2O7/AGO FILMS AND ITS EVALUATION IN CONGO RED DEGRADATION AND AS ANTIBACTERIAL CONTROL TO STAPHYLOCOCCUS AUREUS
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2023
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Resumen
IN THIS ARTICLE, WE PROPOSE A SIMPLE PHOTOCHEMICAL METHOD TO SYNTHESIZE PURE LA2TI2O7 FLMS AND LA2TI2O7 FLMS DOPED WITH SILVER AT 1.0, 3.0, AND 5.0 MOL%. AFTER ANNEALING THE PHOTO-DEPOSITED FLMS AT 900 °C, XRD, SEM, AND XPS ANALYSES SHOWED THE FORMATION OF A MONOCLINIC LA2TI2O7 PHASE AND THE PRESENCE OF AG AND AGO IN DOPED SAMPLES. PHOTOCATALYTIC TESTS FOR CONGO RED DEGRADATION DEMONSTRATED THAT PURE LA2TI2O7 ACHIEVED 25.4% DEGRADATION, WHILE DOPED SAMPLES REACHED A MAXIMUM OF 92.7% DEGRADATION. MOREOVER, INCREASING SILVER DOPING ON LA2TI2O7 FLMS SIGNIFCANTLY REDUCED THE GROWTH OF STAPHYLOCOCCUS AUREUS, INDICATING POTENTIAL ANTIBACTERIAL PROPERTIES. THE ENHANCED PHOTOACTIVITY WAS ATTRIBUTED TO THE FORMATION OF A TYPE I HETEROJUNCTION BETWEEN LA2TI2O7 AND AGO, AND A DEGRADATION MECHANISM WAS PROPOSED BASED ON CONGO RED DEGRADATION.
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Photochemical deposition, Photocatalyst, La2Ti2O7 flms, Congo red (CR) · Staphylococcus aureus (S. aureus)
