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<p>Due to the recent overuse of antibiotics, antibiotic pollution is a major threat to both the ecological environment and human health. It requires the development of efficient and low-cost techniques for removing them from wastewater. In this research, we report for the first time the synthesis of the magnetic nanocomposite MnFe<sub>12</sub>O<sub>19</sub>/BiOI via a hydrothermal method and its application in the photocatalytic degradation of ciprofloxacin (CIP) under simulated sunlight. The synthesized nanophotocatalysts were characterized by various characterization techniques such as XRD, FTIR, DRS, TEM, DLS, EDX, and FESEM. The effects of operational parameters including contaminant concentration (5–100&#xa0;mg/L), pH (3–9), nanocatalyst dose (0.025–1.5&#xa0;g/L), and duration of contact (5–200&#xa0;min) were systematically investigated to optimize the photocatalytic degradation of CIP. The findings indicated that under the optimal conditions, the MnFe<sub>12</sub>O<sub>19</sub>/BiOI nanocomposite effectively decomposed the target pollutant leading to complete degradation. In addition, the removal rates of total organic carbon and chemical oxygen demand were established to be 80.11% and 67.05%, respectively, suggesting that the nanocomposite possesses high mineralization efficiency for CIP photodegradation. Stability and magnetic recovery analyses confirmed that the photocatalyst maintained high stability and efficiency after six consecutive photocatalytic degradation cycles. These findings demonstrate that MnFe<sub>12</sub>O<sub>19</sub>/BiOI not only offers an efficient and reusable option for antibiotic wastewater treatment, but also provides offers fresh perspectives on the design of ferrite-BiOI heterogeneous junctions for advanced visible light-guided photocatalysis.</p>

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Application of synthesized recyclable magnetic nanocomposite MnFe12O19/BiOI in photocatalytic degradation of ciprofloxacin in presence of simulated sunlight

  • 期刊论文

  • 发表日期：

    2025年12月4日

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  • M. Kargar,
  • A. H. Hamidian,
  • N. Nasseh

摘要

Due to the recent overuse of antibiotics, antibiotic pollution is a major threat to both the ecological environment and human health. It requires the development of efficient and low-cost techniques for removing them from wastewater. In this research, we report for the first time the synthesis of the magnetic nanocomposite MnFe12O19/BiOI via a hydrothermal method and its application in the photocatalytic degradation of ciprofloxacin (CIP) under simulated sunlight. The synthesized nanophotocatalysts were characterized by various characterization techniques such as XRD, FTIR, DRS, TEM, DLS, EDX, and FESEM. The effects of operational parameters including contaminant concentration (5–100 mg/L), pH (3–9), nanocatalyst dose (0.025–1.5 g/L), and duration of contact (5–200 min) were systematically investigated to optimize the photocatalytic degradation of CIP. The findings indicated that under the optimal conditions, the MnFe12O19/BiOI nanocomposite effectively decomposed the target pollutant leading to complete degradation. In addition, the removal rates of total organic carbon and chemical oxygen demand were established to be 80.11% and 67.05%, respectively, suggesting that the nanocomposite possesses high mineralization efficiency for CIP photodegradation. Stability and magnetic recovery analyses confirmed that the photocatalyst maintained high stability and efficiency after six consecutive photocatalytic degradation cycles. These findings demonstrate that MnFe12O19/BiOI not only offers an efficient and reusable option for antibiotic wastewater treatment, but also provides offers fresh perspectives on the design of ferrite-BiOI heterogeneous junctions for advanced visible light-guided photocatalysis.