<p>This study systematically investigates the structural, optical, and photocatalytic properties of Zn<sub>1−x</sub>Ag<sub>x</sub>O nanoparticles (0.00 ≤ x ≤ 0.04) synthesized through an energy-efficient co-precipitation method at 60&#xa0;°C. Comprehensive characterization using XRD with Rietveld refinement confirms the successful incorporation of Ag<sup>+</sup> ions into the ZnO lattice while maintaining its hexagonal wurtzite structure, with crystallite sizes decreasing from 71.06&#xa0;nm (undoped) to 37.67&#xa0;nm (x = 0.04). Optical analysis reveals a controlled bandgap reduction from 3.00&#xa0;eV to 2.75&#xa0;eV with increasing Ag content, significantly enhancing visible light absorption. The optimized Ag-ZnO photocatalyst demonstrates exceptional performance with 89.8% methylene blue degradation under UV irradiation. These findings highlight the material’s potential for industrial wastewater treatment applications, while also identifying the need for further bandgap engineering to improve sunlight-driven photocatalytic activity through co-doping strategies or heterojunction formation.</p>

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Tailoring of structural, optical and photocatalytic properties of Zn1-xAgxO NPs for water treatment applications

  • Mansour Mohamed,
  • A. Sedky,
  • Abdullah S. Alshammari,
  • Z. R. Khan,
  • M. Bouzidi,
  • K. A. Aly

摘要

This study systematically investigates the structural, optical, and photocatalytic properties of Zn1−xAgxO nanoparticles (0.00 ≤ x ≤ 0.04) synthesized through an energy-efficient co-precipitation method at 60 °C. Comprehensive characterization using XRD with Rietveld refinement confirms the successful incorporation of Ag+ ions into the ZnO lattice while maintaining its hexagonal wurtzite structure, with crystallite sizes decreasing from 71.06 nm (undoped) to 37.67 nm (x = 0.04). Optical analysis reveals a controlled bandgap reduction from 3.00 eV to 2.75 eV with increasing Ag content, significantly enhancing visible light absorption. The optimized Ag-ZnO photocatalyst demonstrates exceptional performance with 89.8% methylene blue degradation under UV irradiation. These findings highlight the material’s potential for industrial wastewater treatment applications, while also identifying the need for further bandgap engineering to improve sunlight-driven photocatalytic activity through co-doping strategies or heterojunction formation.