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<p>The present investigation studies the effects of the varying the concentrations (1%, 3% and 5% w/v) of the natural extract, <i>Pulmonaria Officinalis</i>, on the characteristics of zinc oxide semiconductors nanoparticles (ZnO NPs) synthesized through an ecological methodology and their performance in photocatalytic and antibacterial essays. The resulting NPs, labeled PUL-1%, PUL-3% and PUL-5%, analyzed by characterization techniques to determine their chemical, optical and structural properties. Fourier Transform Infrared Spectroscopy (FTIR) and Energy-Dispersive X-ray Spectroscopy (EDX) results verified the presence of zinc (Zn) and oxygen (O) signals in the ZnO NPs, as well as the Zn-O bond. The hexagonal wurtzite structure was confirmed by X-Ray Diffraction (XRD), as well as a crystallite size of 52.22, 41.13, and 28.47&#xa0;nm for PUL-1%, PUL-3%, and PUL-5%, respectively. The band gap values obtained for the syntheses were 2.8081&#xa0;eV for PUL-1%, 2.7640&#xa0;eV for PUL-3%, and 2.6965&#xa0;eV for PUL-5%. These results suggest that the variation in the percentage of <i>P. officinalis</i> has an effect on the properties of ZnO. Photodegradation essays demonstrated the effectiveness of the synthesized NPs in degrading organic dyes, achieving total degradation for Amido Black 10B (AB10B) and Methyl Orange (MO), while for Congo red (CR), Alizarine yellow (AY) and Methylene Blue (MB) dyes, degradation percentages greater than 90% were achieved. Regarding antibacterial properties, it was observed that ZnO NPs displayed inhibitory activity against <i>Staphylococcus aureus and Bacillus subtilis</i>. These results evidence the potential of ZnO NPs synthesized using <i>P. Officinalis</i> for photocatalytic and antibacterial applications.</p>

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Sustainable Synthesis of ZnO Semiconductor Nanoparticles via Pulmonaria officinalis Extract for Photocatalytic Dye Degradation and Antibacterial Applications

  • 期刊论文

  • 发表日期：

    2026年8月3日

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  • Nicole Gaynor-Soto,
  • Fernando Andres Barrios-Navarro,
  • Alfredo Rafael Vilchis-Nestor,
  • Argelia Rosillo-De la Torre,
  • Mika Sillanpää,
  • Priscy Alfredo Luque Morales

摘要

The present investigation studies the effects of the varying the concentrations (1%, 3% and 5% w/v) of the natural extract, Pulmonaria Officinalis, on the characteristics of zinc oxide semiconductors nanoparticles (ZnO NPs) synthesized through an ecological methodology and their performance in photocatalytic and antibacterial essays. The resulting NPs, labeled PUL-1%, PUL-3% and PUL-5%, analyzed by characterization techniques to determine their chemical, optical and structural properties. Fourier Transform Infrared Spectroscopy (FTIR) and Energy-Dispersive X-ray Spectroscopy (EDX) results verified the presence of zinc (Zn) and oxygen (O) signals in the ZnO NPs, as well as the Zn-O bond. The hexagonal wurtzite structure was confirmed by X-Ray Diffraction (XRD), as well as a crystallite size of 52.22, 41.13, and 28.47 nm for PUL-1%, PUL-3%, and PUL-5%, respectively. The band gap values obtained for the syntheses were 2.8081 eV for PUL-1%, 2.7640 eV for PUL-3%, and 2.6965 eV for PUL-5%. These results suggest that the variation in the percentage of P. officinalis has an effect on the properties of ZnO. Photodegradation essays demonstrated the effectiveness of the synthesized NPs in degrading organic dyes, achieving total degradation for Amido Black 10B (AB10B) and Methyl Orange (MO), while for Congo red (CR), Alizarine yellow (AY) and Methylene Blue (MB) dyes, degradation percentages greater than 90% were achieved. Regarding antibacterial properties, it was observed that ZnO NPs displayed inhibitory activity against Staphylococcus aureus and Bacillus subtilis. These results evidence the potential of ZnO NPs synthesized using P. Officinalis for photocatalytic and antibacterial applications.