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<p>This study investigated the synthesis and photocatalytic properties of ZnO–Fe<sub>2</sub>O<sub>3</sub> composites prepared via high-energy ball milling. Composites with varying Fe<sub>2</sub>O<sub>3</sub> concentrations (3, 5, and 10 wt%) were characterized using X-ray diffraction, scanning electron microscopy, UV–visible spectroscopy, and photoluminescence. The addition of Fe<sub>2</sub>O<sub>3</sub> to ZnO resulted in a narrower optical bandgap, enhanced charge separation, and improved photocatalytic activity. The ZnO + Fe<sub>2</sub>O<sub>3</sub> 5 wt% composite demonstrated the best performance, removing up to 80% of the methylene blue dye from water after 120&#xa0;min of sunlight exposure at an average intensity of 800 W/m<sup>2</sup>. This simple and eco-friendly synthesis method offers a promising approach for developing efficient photocatalytic materials to address water pollution issues.</p> Graphical Abstract <p></p>

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Photocatalytic degradation of MB by ZnO–Fe2O3 composite prepared by high-energy ball milling

  • 期刊论文

  • 发表日期：

    2025年11月25日

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  • Manuel Serrano,
  • Pedro A. Márquez-Aguilar,
  • Marcos Fuentes-Pérez,
  • Jeannete Ramírez-Aparicio,
  • Abigail Parra-Parra,
  • Hugo A. Rojas-Hernández

摘要

This study investigated the synthesis and photocatalytic properties of ZnO–Fe2O3 composites prepared via high-energy ball milling. Composites with varying Fe2O3 concentrations (3, 5, and 10 wt%) were characterized using X-ray diffraction, scanning electron microscopy, UV–visible spectroscopy, and photoluminescence. The addition of Fe2O3 to ZnO resulted in a narrower optical bandgap, enhanced charge separation, and improved photocatalytic activity. The ZnO + Fe2O3 5 wt% composite demonstrated the best performance, removing up to 80% of the methylene blue dye from water after 120 min of sunlight exposure at an average intensity of 800 W/m2. This simple and eco-friendly synthesis method offers a promising approach for developing efficient photocatalytic materials to address water pollution issues.

Graphical Abstract