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Antibiotics, including Azithromycin, have been increasingly detected in the environment over recent decades, contributing to significant environmental pollution and posing risks to human health. This study aimed to evaluate the photocatalytic removal efficiency of Azithromycin from aqueous solutions using Fe-doped TiO2@Fe3O4 nanocatalysts under a 30-W UVC lamp, two 15-W lamps with an irradiance of approximately 15mW/cm². The nanocatalysts were synthesized via a sol-gel method, with their properties confirmed through SEM, XRD, FTIR, and VSM analyses, verifying the incorporation of Fe ions into the TiO2@Fe3O4 structure. The effects of key variables were investigated, including pH (3, 5, 7, 9, 11), initial Azithromycin concentration (50, 100, 150 mg/L), nanocatalyst dosage (500, 1000, 1500 mg/L), and reaction time (30, 60, 90 min). The maximum degradation efficiency of 95% was achieved at pH 3, an initial Azithromycin concentration of 50 mg/L, a catalyst dosage of 1000 mg/L, and a reaction time of 90 minutes. Given the high efficiency of this photocatalytic process, its application is recommended for the removal of Azithromycin from water resources

Keywords: Azithromycin, photocatalytic degradation, Fe-doped TiO2@Fe3O4, UV-C irradiation, sol-gel method

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