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<p>This study is regarding the novel synthesis of zinc ferrite (ZnFe<sub>2</sub>O<sub>4</sub>) thin films and nanoparticles by a sol–gel transition. In this study, we performed hydrolysis/polycondensation reactions on a mixture of zinc and iron alkoxides. To gather information about surface morphology, chemical composition, optical properties, and crystal structure, we applied UV–VIS, FTIR, XRD, BET, TGA–DSC, AFM, and TEM. We also studied how well the ZnFe<sub>2</sub>O<sub>4</sub> nanoparticles and thin films would degrade Orange G, a model pollutant, through visible light exposure and photocatalytic activity. The results showed the nanoparticles provided the best photocatalytic activity at 500&#xa0;°C and thin films at 450&#xa0;°C. The immobilized photocatalyst still demonstrated activity. However, it did not reach the activity levels exhibited by the nanoparticles. This would be expected due to the larger specific surface area of the nanoparticles.</p> Graphical Abstract <p></p>

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Exploring the Visible Light Photocatalytic Efficiency of Sol–Gel Derived Zinc Ferrite: A Comparative Analysis of Nanoparticles and Thin Films

  • 期刊论文

  • 发表日期：

    2025年5月23日

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  • Samir Briche,
  • Mustapha Boutamart,
  • Otman Abida,
  • Khalid Nouneh,
  • Lekbira El Mersly,
  • El Mountassir El Mouchtari,
  • Salah Rafqah

摘要

This study is regarding the novel synthesis of zinc ferrite (ZnFe2O4) thin films and nanoparticles by a sol–gel transition. In this study, we performed hydrolysis/polycondensation reactions on a mixture of zinc and iron alkoxides. To gather information about surface morphology, chemical composition, optical properties, and crystal structure, we applied UV–VIS, FTIR, XRD, BET, TGA–DSC, AFM, and TEM. We also studied how well the ZnFe2O4 nanoparticles and thin films would degrade Orange G, a model pollutant, through visible light exposure and photocatalytic activity. The results showed the nanoparticles provided the best photocatalytic activity at 500 °C and thin films at 450 °C. The immobilized photocatalyst still demonstrated activity. However, it did not reach the activity levels exhibited by the nanoparticles. This would be expected due to the larger specific surface area of the nanoparticles.

Graphical Abstract