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<p>In this study, a novel MnFe<sub>2</sub>O<sub>4</sub>@TiO<sub>2</sub>@MWCNTs nanocomposite was synthesized and employed for the photocatalytic degradation of enrofloxacin under solar irradiation. The fluoroquinolone antibiotics have become a substantial environmental concern due to their persistence and potential for antimicrobial resistance. Enrofloxacin antibiotic is widely used fluoroquinolone antibiotic in the different veterinary treatments. The composite material was characterized by XRD, FTIR, SEM and UV–Vis spectroscopy to confirm its structural and optical properties. Photodegradation experiments were conducted under varying operational parameters, including effect of catalyst type, catalyst dosage, initial enrofloxacin concentration and irradiation time. The results demonstrated that the MnFe<sub>2</sub>O<sub>4</sub>@TiO<sub>2</sub>@MWCNTs composite exhibited superior photocatalytic efficiency compared to individual components. This composite (1.2&#xa0;g/L) achieved 93% degradation efficiency for 28&#xa0;ppm enrofloxacin within 80&#xa0;min at pH of 07. This remarkable performance of the composite was attributed to magnetic effect of MnFe<sub>2</sub>O<sub>4</sub>, high photocatalytic activity of TiO<sub>2</sub> and charge separation of multiwall carbon nanotubes (MWCNTs). The ·OH and ·O<sub>2</sub><sup>−</sup> radicals attack the C–F bond and the quinolone ring to degrade the ENF molecules. The kinetic studies revealed that the photodegradation reactions followed pseudo-first-order kinetics with R<sup>2</sup> value of 0.99.</p> Graphical abstract <p></p>

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Superior photocatalytic behaviour of MnFe2O4@TiO2@MWCNTs hybrid photocatalyst for efficacious degradation of enrofloxacin antibiotic from veterinary wastewater

  • 期刊论文

  • 发表日期：

    2025年12月10日

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  • Q. Raza,
  • G. Fatima,
  • H. H. Altilasi,
  • E. Aldosari,
  • I. Hussain,
  • M. A. Hossain,
  • L. Gurbanova,
  • S. Lim,
  • M. Jamshaid

摘要

In this study, a novel MnFe2O4@TiO2@MWCNTs nanocomposite was synthesized and employed for the photocatalytic degradation of enrofloxacin under solar irradiation. The fluoroquinolone antibiotics have become a substantial environmental concern due to their persistence and potential for antimicrobial resistance. Enrofloxacin antibiotic is widely used fluoroquinolone antibiotic in the different veterinary treatments. The composite material was characterized by XRD, FTIR, SEM and UV–Vis spectroscopy to confirm its structural and optical properties. Photodegradation experiments were conducted under varying operational parameters, including effect of catalyst type, catalyst dosage, initial enrofloxacin concentration and irradiation time. The results demonstrated that the MnFe2O4@TiO2@MWCNTs composite exhibited superior photocatalytic efficiency compared to individual components. This composite (1.2 g/L) achieved 93% degradation efficiency for 28 ppm enrofloxacin within 80 min at pH of 07. This remarkable performance of the composite was attributed to magnetic effect of MnFe2O4, high photocatalytic activity of TiO2 and charge separation of multiwall carbon nanotubes (MWCNTs). The ·OH and ·O2− radicals attack the C–F bond and the quinolone ring to degrade the ENF molecules. The kinetic studies revealed that the photodegradation reactions followed pseudo-first-order kinetics with R2 value of 0.99.

Graphical abstract