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Abstract <p>Semiconductor heterostructure photocatalysts are gaining attention for environmental applications due to their effectiveness in decomposing pollutants under solar light. In the present study, efficient Fe:ZnO and Cu:ZnO photocatalysts were synthesized by hydrothermal methodology. The structure, elemental composition, and morphology of prepared pristine and transition metal (Fe and Cu)-doped ZnO photocatalysts were evaluated using FTIR, XRD, and SEM–EDX, respectively. The results showed the hexagonal structure of pristine ZnO and doped ZnO heterostructures. The band gap energy (E<sub>g</sub>) and photocatalytic performance against methylene blue (MB) were tested, revealing 94% degradation for Fe:ZnO and 84% for Cu:ZnO after 90&#xa0;min, outperforming pristine ZnO. The superior performance of Fe:ZnO is attributed to its narrower E<sub>g</sub>. The present study unveiled that the synthesized metal-doped photocatalysts could be potentially used against wastewater treatment in textile industries.</p> Graphical abstract <p></p>

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Comparative study of transition metals doped ZnO as a novel solar active photocatalyst for dye degradation

  • 期刊论文

  • 发表日期：

    2025年12月17日

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  • Rabia Sattar,
  • Muhammad Mohsin,
  • Tehmeena Ishaq,
  • Ansa Latif

摘要

Abstract

Semiconductor heterostructure photocatalysts are gaining attention for environmental applications due to their effectiveness in decomposing pollutants under solar light. In the present study, efficient Fe:ZnO and Cu:ZnO photocatalysts were synthesized by hydrothermal methodology. The structure, elemental composition, and morphology of prepared pristine and transition metal (Fe and Cu)-doped ZnO photocatalysts were evaluated using FTIR, XRD, and SEM–EDX, respectively. The results showed the hexagonal structure of pristine ZnO and doped ZnO heterostructures. The band gap energy (Eg) and photocatalytic performance against methylene blue (MB) were tested, revealing 94% degradation for Fe:ZnO and 84% for Cu:ZnO after 90 min, outperforming pristine ZnO. The superior performance of Fe:ZnO is attributed to its narrower Eg. The present study unveiled that the synthesized metal-doped photocatalysts could be potentially used against wastewater treatment in textile industries.

Graphical abstract