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<p>The chronic occurrence of sulphanilamide in aquatic settings constitutes a substantial hazard to ecosystems and human health, that requiring the development of efficient and sustainable degrading methods. In the current script, selenium nanoparticles loaded metal organic framework (SeNPs@MIL-125-NH<sub>2</sub>) was designed as antimicrobial composite for the removal of sulphanilamide as pharmaceutical contaminants. The SeNPs@MIL-125-NH<sub>2</sub> composite was prepared, while the spherical SeNPs with 18.4&#xa0;nm was obviously deposited over the crystalline disc of MIL-125-NH<sub>2</sub>. SeNPs@MIL-125-NH<sub>2</sub> exhibited highest antimicrobial activity with microbial reduction of 94.8% against <i>S. aureus</i>, 93.3% against <i>E. coli</i> and 84.5% against <i>C. albicans</i>. Removal of sulphanilamide was studied in presence of SeNPs@MIL-125-NH<sub>2</sub> composite by the catalytic degradation under sonolysis and photolysis effects. Sulphanilamide decomposition was significantly enhanced under combined ultrasound and visible light rays, while the content of degradation residues was significantly increased from 366.8&#xa0;mg/g for MIL-125-NH<sub>2</sub> to 496.5&#xa0;mg/g for SeNPs@MIL-125-NH<sub>2</sub>. This enhanced degradation is attributed to the synergistic effect of ultrasonic cavitation-induced hot spots and light-driven electron–hole pair generation, which together promote the formation of reactive oxygen species (ROS). SeNPs@MIL-125-NH<sub>2</sub> was shown with excellent reusability and retaining over 89% of its initial degradation capacity (Q<sub>t</sub> = 441.2&#xa0;mg/g) after 5 cycles.</p> Graphical Abstract <p></p>

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Removing Pharmaceutical Contaminants Implementing Antimicrobial SeNPs@MIL-125-NH2 Composite and Synergistic Mechanisms

  • 期刊论文

  • 发表日期：

    2026年5月12日

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  • Roba M. S. Attar,
  • Sara A. Alqarni,
  • Mashael M. Alharbi,
  • Zeyad M. Alharbi,
  • Adel I. Alalawy,
  • Fatmah O. Sefrji,
  • Sraa Abu-Melha,
  • Nashwa M. El-Metwaly

摘要

The chronic occurrence of sulphanilamide in aquatic settings constitutes a substantial hazard to ecosystems and human health, that requiring the development of efficient and sustainable degrading methods. In the current script, selenium nanoparticles loaded metal organic framework (SeNPs@MIL-125-NH2) was designed as antimicrobial composite for the removal of sulphanilamide as pharmaceutical contaminants. The SeNPs@MIL-125-NH2 composite was prepared, while the spherical SeNPs with 18.4 nm was obviously deposited over the crystalline disc of MIL-125-NH2. SeNPs@MIL-125-NH2 exhibited highest antimicrobial activity with microbial reduction of 94.8% against S. aureus, 93.3% against E. coli and 84.5% against C. albicans. Removal of sulphanilamide was studied in presence of SeNPs@MIL-125-NH2 composite by the catalytic degradation under sonolysis and photolysis effects. Sulphanilamide decomposition was significantly enhanced under combined ultrasound and visible light rays, while the content of degradation residues was significantly increased from 366.8 mg/g for MIL-125-NH2 to 496.5 mg/g for SeNPs@MIL-125-NH2. This enhanced degradation is attributed to the synergistic effect of ultrasonic cavitation-induced hot spots and light-driven electron–hole pair generation, which together promote the formation of reactive oxygen species (ROS). SeNPs@MIL-125-NH2 was shown with excellent reusability and retaining over 89% of its initial degradation capacity (Qt = 441.2 mg/g) after 5 cycles.

Graphical Abstract