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<p>This study investigated the effect of gamma irradiation on photocatalytic performance of carbamazepine and mefenamic acid under visible light. The optical band gap of the pure and irradiated Fe<sub>3</sub>O<sub>4</sub> samples was found to range between 2.57&#xa0;eV and 2.42&#xa0;eV. The change in optical and structural parameters can be due to the defects that induced by gamma irradiation. Photoluminescence (PL) analysis showed that γ-irradiation altered recombination pathways, which directly improves the photocatalytic performance. The sample irradiated with 6.0&#xa0;kGy showed degradation efficiency of 83.3% and 92.3% for carbamazepine and mefenamic acid, respectively. The results highlight the significance of optimizing gamma radiation doses for efficient degradation of pharmaceutical&#xa0;drugs, demonstrating a promising approach for environmental remediation. The conclusion is that the photocatalysts exposed to gamma radiation are favourable materials for degradation of&#xa0;effluents.</p>

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Tuning of structural and optical parameters of Fe3O4 by gamma irradiation for evaluation of photocatalytic activity for removal of drugs

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • Norah Salem Alsaiari,
  • Allah Rakha,
  • Bushra Shaheen,
  • Beriham Basha,
  • Imed Boukhris,
  • Ibrahim A. Alsafari,
  • M. S. Al-Buriahi,
  • Niaz Ahmed,
  • Imran Shakir,
  • Muhammad Farooq Warsi

摘要

This study investigated the effect of gamma irradiation on photocatalytic performance of carbamazepine and mefenamic acid under visible light. The optical band gap of the pure and irradiated Fe3O4 samples was found to range between 2.57 eV and 2.42 eV. The change in optical and structural parameters can be due to the defects that induced by gamma irradiation. Photoluminescence (PL) analysis showed that γ-irradiation altered recombination pathways, which directly improves the photocatalytic performance. The sample irradiated with 6.0 kGy showed degradation efficiency of 83.3% and 92.3% for carbamazepine and mefenamic acid, respectively. The results highlight the significance of optimizing gamma radiation doses for efficient degradation of pharmaceutical drugs, demonstrating a promising approach for environmental remediation. The conclusion is that the photocatalysts exposed to gamma radiation are favourable materials for degradation of effluents.