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<p>Non-woven neat polysulfone (PSU) and Ag–Co/PSU nanocomposite nanofibers were prepared by electrospinning process. The electrospun non-woven neat PSU and Ag–Co/PSU nanocomposite nanofibers were characterized through scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), Fourier transform&#xa0;infrared&#xa0;spectroscopy (FTIR) and X-ray diffractometry (XRD). The SEM study presented that PSU and Ag–Co/PSU nanocomposites nanofibers were smooth, bead less, and randomly oriented. The diameter of neat PSU and Ag-Co/PSU nanocomposite nanofibers was below 800&#xa0;nm. EDX spectra illustrated the elemental composition of non-woven neat PSU nanofibers and Ag–Co/PSU nanocomposite nanofibers, which showed the presence of Ag–Co NPs (nanoparticles) in the composite nanofibers. The FTIR spectrum of Ag–Co/PSU presented a peak at 710 cm<sup>−1</sup>, which might be due to the presence of Ag/Co NPs in PSU electrospun nanofibers. The photodegradation study presented that the neat PSU and Ag–Co/PSU nanocomposite nanofibers degraded about 74% and 83% acetamiprid pesticide within 5&#xa0;h, respectively. It was also found that the neat PSU degraded about 20% and 67% acetamiprid pesticide while Ag–Co/PSU nanocomposite nanofibers degraded about 25% and 78% using 0.010 and 0.030&#xa0;g nanofibers, respectively. Further, it was also found that the recovered PSU and Ag–Co/PSU nanocomposite electrospun nanofibers significantly degraded the acetamiprid pesticide. The photodegradation efficiency of recovered Ag–Co/PSU (47%) was higher than that of recovered neat PSU nanofibers (28%). It means that Ag–Co/PSU nanocomposite nanofibers had superior photocatalytic activity as compared to neat PSU nanofibers. Furthermore, the data were better fitted by the pseudo-first-order kinetic model compared to the pseudo-second-order kinetic model. </p> Graphical abstract <p></p>

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Photodegradation ability of electrospun Ag–Co/polysulfone nanocomposite nanofibers against acetamiprid pesticide

  • 期刊论文

  • 发表日期：

    2025年6月16日

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  • Mazhar Ali,
  • Tamanna Gul,
  • Falak Naz,
  • Soo Young Park,
  • Khalid Saeed

摘要

Non-woven neat polysulfone (PSU) and Ag–Co/PSU nanocomposite nanofibers were prepared by electrospinning process. The electrospun non-woven neat PSU and Ag–Co/PSU nanocomposite nanofibers were characterized through scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometry (XRD). The SEM study presented that PSU and Ag–Co/PSU nanocomposites nanofibers were smooth, bead less, and randomly oriented. The diameter of neat PSU and Ag-Co/PSU nanocomposite nanofibers was below 800 nm. EDX spectra illustrated the elemental composition of non-woven neat PSU nanofibers and Ag–Co/PSU nanocomposite nanofibers, which showed the presence of Ag–Co NPs (nanoparticles) in the composite nanofibers. The FTIR spectrum of Ag–Co/PSU presented a peak at 710 cm−1, which might be due to the presence of Ag/Co NPs in PSU electrospun nanofibers. The photodegradation study presented that the neat PSU and Ag–Co/PSU nanocomposite nanofibers degraded about 74% and 83% acetamiprid pesticide within 5 h, respectively. It was also found that the neat PSU degraded about 20% and 67% acetamiprid pesticide while Ag–Co/PSU nanocomposite nanofibers degraded about 25% and 78% using 0.010 and 0.030 g nanofibers, respectively. Further, it was also found that the recovered PSU and Ag–Co/PSU nanocomposite electrospun nanofibers significantly degraded the acetamiprid pesticide. The photodegradation efficiency of recovered Ag–Co/PSU (47%) was higher than that of recovered neat PSU nanofibers (28%). It means that Ag–Co/PSU nanocomposite nanofibers had superior photocatalytic activity as compared to neat PSU nanofibers. Furthermore, the data were better fitted by the pseudo-first-order kinetic model compared to the pseudo-second-order kinetic model.

Graphical abstract