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<p>Ag-doped TiO<sub>2</sub> (Ag/AgO-TiO<sub>2</sub>) nanoparticles were successfully synthesized and coated onto cotton fabric thanks to a plasma-assisted dip-coating technique. The structural properties of Ag-TiO<sub>2</sub> hybrid nanoparticles were assessed by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and UV–Vis diffuse reflectance spectra (DRS). The photocatalytic oxidation performance of Ag/AgO-TiO<sub>2</sub> nanoparticles was investigated through Patent Blue V (PBV) dye decomposition under solar light irradiation, whereas the bactericidal effect was tested on the <i>Escherichia coli</i> strain. The silver (Ag) loading effect on both photocatalytic and antibacterial performances was investigated, and the results showed that the Ag/AgO-TiO<sub>2</sub>:1/3-coated cotton fabric shows enhanced photocatalytic and bactericidal properties under sunlight irradiation compared to pure TiO<sub>2</sub>. Accordingly, 90.30% degradation of PBV and almost complete activity inhibition of <i>Escherichia coli</i> were registered within 1&#xa0;h of contact time under solar irradiation. The photocatalytic mechanism involved the generation of reactive radical hydroxyl species for oxidative degradation of PBV, whereas the antibacterial activity results from both reactive radical species and silver species’ antimicrobial properties.</p>

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Self-Cleaning and Antibacterial Properties of Plasma-Elaborated Ag/AgO-TiO2-Coated Cotton Fabrics

  • 期刊论文

  • 发表日期：

    2025年10月11日

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  • Suzie Anne Voufouo,
  • Jean-Baptiste Tarkwa,
  • Elie Acayanka,
  • Wilfrid Fokoue Fokou,
  • Franck W. Boyom‑Tatchemo,
  • Georges Youbi Kamgang

摘要

Ag-doped TiO2 (Ag/AgO-TiO2) nanoparticles were successfully synthesized and coated onto cotton fabric thanks to a plasma-assisted dip-coating technique. The structural properties of Ag-TiO2 hybrid nanoparticles were assessed by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and UV–Vis diffuse reflectance spectra (DRS). The photocatalytic oxidation performance of Ag/AgO-TiO2 nanoparticles was investigated through Patent Blue V (PBV) dye decomposition under solar light irradiation, whereas the bactericidal effect was tested on the Escherichia coli strain. The silver (Ag) loading effect on both photocatalytic and antibacterial performances was investigated, and the results showed that the Ag/AgO-TiO2:1/3-coated cotton fabric shows enhanced photocatalytic and bactericidal properties under sunlight irradiation compared to pure TiO2. Accordingly, 90.30% degradation of PBV and almost complete activity inhibition of Escherichia coli were registered within 1 h of contact time under solar irradiation. The photocatalytic mechanism involved the generation of reactive radical hydroxyl species for oxidative degradation of PBV, whereas the antibacterial activity results from both reactive radical species and silver species’ antimicrobial properties.