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<p>The increasing population resulted in raised water contamination, prompting experts to create an effective, environment friendly, and safe catalyst for the elimination of these contaminants from water resources. This research exhibits the improvement of Ba-doped Cr<sub>2</sub>O<sub>3</sub> photocatalyst using low-cost, simple sol-gel method aimed at degrading Congo red (CR) under visible light. Numerous analytical techniques have been employed to examine physical, morphological, and optical characteristics of produced catalysts. In photodegradation tests, the photocatalyst demonstrated superior performance compared to the individual catalysts. After 140 min of exposure to visible light, this photocatalyst successfully removed the CR dye, achieving significantly greater degradation rates compared to pure Cr<sub>2</sub>O<sub>3</sub> (66.25%). The Ba-doped Cr<sub>2</sub>O<sub>3</sub> photocatalyst demonstrated remarkable efficacy in degrading CR dye, achieving an impressive efficiency of 95%. Furthermore, the boosted performance of the doped catalyst can be ascribed to changes in structure, a reduced energy band gap, restricted recombination, and efficient transportation and separation of charge carriers at the surface. The remarkable synergistic photocatalytic activity demonstrated its capability in water purification.</p><p></p>

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Enhancement of photocatalytic degradation of metal-doped transition metal chalcogenide by doping strategy

  • 期刊论文

  • 发表日期：

    2025年11月18日

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  • Lamia Abu El Maati,
  • Muneerah Alomar,
  • Haifa A. Al-Yousef,
  • Hafiz Muhammad Tahir Farid,
  • Salma Aman,
  • Sara M. Bin Najefan

摘要

The increasing population resulted in raised water contamination, prompting experts to create an effective, environment friendly, and safe catalyst for the elimination of these contaminants from water resources. This research exhibits the improvement of Ba-doped Cr2O3 photocatalyst using low-cost, simple sol-gel method aimed at degrading Congo red (CR) under visible light. Numerous analytical techniques have been employed to examine physical, morphological, and optical characteristics of produced catalysts. In photodegradation tests, the photocatalyst demonstrated superior performance compared to the individual catalysts. After 140 min of exposure to visible light, this photocatalyst successfully removed the CR dye, achieving significantly greater degradation rates compared to pure Cr2O3 (66.25%). The Ba-doped Cr2O3 photocatalyst demonstrated remarkable efficacy in degrading CR dye, achieving an impressive efficiency of 95%. Furthermore, the boosted performance of the doped catalyst can be ascribed to changes in structure, a reduced energy band gap, restricted recombination, and efficient transportation and separation of charge carriers at the surface. The remarkable synergistic photocatalytic activity demonstrated its capability in water purification.