Scholarlink

<p>ZnFe<sub>12</sub>O<sub>19</sub> (ZnFe) and ZnFe<sub>12</sub>O<sub>19</sub>/Ag nanocomposites (ZnFe/Ag NCS) were synthesized using <i>Mespilus germanica</i> seed extract as a green reducing and capping agent. Structural analyses (XRD, TEM, and DLS) confirmed the formation of crystalline nanostructures with spherical to elliptical morphology, having average sizes of 40–50&#xa0;nm for ZnFe and 55–75&#xa0;nm for ZnFe/Ag. The optical band gap decreased from 1.93&#xa0;eV (ZnFe) to 1.74&#xa0;eV (ZnFe/Ag), indicating improved charge separation. ZnFe/Ag NCs exhibited enhanced antibacterial activity, with MIC values of 250&#xa0;µg/mL against <i>E. coli</i> and 500&#xa0;µg/mL against <i>K. pneumoniae</i>, while ZnFe alone showed negligible effect. Photocatalytic degradation of Penicillin G reached 92.4% under optimal conditions (0.6&#xa0;g/L ZnFe, 15 ppm pollutant), outperforming bare ZnFe due to efficient electron transfer, plasmonic enhancement, and reactive oxygen species generation. The nanocomposites retained 73.4% of activity after six cycles, demonstrating good stability. These results suggest that ZnFe/Ag NCs are promising eco-friendly materials for antibacterial and photocatalytic applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Green synthesis of novel tri-component ZnFe12O19/Ag nanocomposites: engineering morphology and performance for enhanced antibiotic degradation and antibacterial action

  • 期刊论文

  • 发表日期：

    2026年1月6日

查看全文
  • Zirar M. Mizwari

摘要

ZnFe12O19 (ZnFe) and ZnFe12O19/Ag nanocomposites (ZnFe/Ag NCS) were synthesized using Mespilus germanica seed extract as a green reducing and capping agent. Structural analyses (XRD, TEM, and DLS) confirmed the formation of crystalline nanostructures with spherical to elliptical morphology, having average sizes of 40–50 nm for ZnFe and 55–75 nm for ZnFe/Ag. The optical band gap decreased from 1.93 eV (ZnFe) to 1.74 eV (ZnFe/Ag), indicating improved charge separation. ZnFe/Ag NCs exhibited enhanced antibacterial activity, with MIC values of 250 µg/mL against E. coli and 500 µg/mL against K. pneumoniae, while ZnFe alone showed negligible effect. Photocatalytic degradation of Penicillin G reached 92.4% under optimal conditions (0.6 g/L ZnFe, 15 ppm pollutant), outperforming bare ZnFe due to efficient electron transfer, plasmonic enhancement, and reactive oxygen species generation. The nanocomposites retained 73.4% of activity after six cycles, demonstrating good stability. These results suggest that ZnFe/Ag NCs are promising eco-friendly materials for antibacterial and photocatalytic applications.