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<p>Organic wastewater pollution and bacterial contamination are increasingly causing social concerns. The development of nanostructured ZnO is critical for creating effective antibacterial and photocatalytic materials. In this study, ZnO nanofibers (ZnO NFs) were successfully fabricated using zinc acetate dihydrate (Zn (CH<sub>3</sub>COO)<sub>2</sub>) as the zinc source and polyvinylpyrrolidone (PVP) as the template through electrospinning combined with calcination. Before synthesizing the ZnO NFs, Zn (CH<sub>3</sub>COO)<sub>2</sub>/PVP nanofiber membranes were optimized using electrospinning to ensure effective nanofiber formation. The synthesis of ZnO NFs was validated through scanning electron microscope equipped with an energy dispersive spectrometer (SEM &amp; EDS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy analysis, and X-ray photoelectron spectrometer (XPS). The average diameter of the zincite phase ZnO NFs was approximately 68 ± 12&#xa0;nm, and the nanofibers were composed of polycrystalline ZnO. The results demonstrate that the degradation rate of the prepared ZnO NFs was 97.97% ± 1.28% for Rhodamine B (Rh B) after 2&#xa0;h of UV irradiation, and the antibacterial rates were 96.22% ± 1.59% and 99.46% ± 0.73% against <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>, respectively. In addition, a potential mechanism of photocatalytic degradation of RhB by ZnO NFs through photocatalytic active substance trapping experiments was investigated. In conclusion, this study provides an effective approach for developing nanomaterials for dye degradation and antibacterial applications.</p> Graphical Abstract <p></p>

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Preparation of zinc oxide nanofibers and their photocatalytic degradation and antibacterial properties

  • 期刊论文

  • 发表日期：

    2025年7月16日

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  • Ru Chen,
  • Si-meng Tian,
  • Jing-hui Song,
  • Guang-tai Zhao,
  • Xin-miao Cao,
  • Qing-yu Shi,
  • Weitao Gong

摘要

Organic wastewater pollution and bacterial contamination are increasingly causing social concerns. The development of nanostructured ZnO is critical for creating effective antibacterial and photocatalytic materials. In this study, ZnO nanofibers (ZnO NFs) were successfully fabricated using zinc acetate dihydrate (Zn (CH3COO)2) as the zinc source and polyvinylpyrrolidone (PVP) as the template through electrospinning combined with calcination. Before synthesizing the ZnO NFs, Zn (CH3COO)2/PVP nanofiber membranes were optimized using electrospinning to ensure effective nanofiber formation. The synthesis of ZnO NFs was validated through scanning electron microscope equipped with an energy dispersive spectrometer (SEM & EDS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy analysis, and X-ray photoelectron spectrometer (XPS). The average diameter of the zincite phase ZnO NFs was approximately 68 ± 12 nm, and the nanofibers were composed of polycrystalline ZnO. The results demonstrate that the degradation rate of the prepared ZnO NFs was 97.97% ± 1.28% for Rhodamine B (Rh B) after 2 h of UV irradiation, and the antibacterial rates were 96.22% ± 1.59% and 99.46% ± 0.73% against Escherichia coli and Staphylococcus aureus, respectively. In addition, a potential mechanism of photocatalytic degradation of RhB by ZnO NFs through photocatalytic active substance trapping experiments was investigated. In conclusion, this study provides an effective approach for developing nanomaterials for dye degradation and antibacterial applications.

Graphical Abstract