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<p>Herein, the pure, cerium (Ce)-doped, Ce/magnesium (Mg)-codoped and Ce/nickel (Ni)-codoped TiO<sub>2</sub> nanomaterials were synthesized using the sol–gel technique followed by calcination at the temperature of 550&#xa0;°C. The concentration of Ce was maintained at 1% by weight in all doped TiO<sub>2</sub> nanomaterials, and the concentration of Mg and Ni were equal to that of Ce in the codoped TiO<sub>2</sub> nanomaterials. The nanomaterials underwent characterization through techniques including X-ray diffraction, diffuse reflectance UV–Vis spectroscopy, scanning electron microscopy combined with energy dispersive X-ray analysis, and Raman spectroscopy. The photocatalytic performance of the synthesized materials was assessed in terms of their ability to degrade Congo Red (CR), Rhodamine B, and Methyl Violet dyes when exposed to UV light. The findings revealed that the codoped samples exhibited significantly higher photocatalytic efficiency compared to Ce-doped TiO<sub>2</sub>. Particularly, the sample codoped with Ce and Ni demonstrated the highest degradation rate of CR dye, reaching 85.92% within 60&#xa0;min.</p>

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Evaluation of the photocatalytic efficiency of Ce, Ce-Mg-, and Ce-Ni-codoped TiO2 nanomaterials for dye degradation under UV light

  • 期刊论文

  • 发表日期：

    2025年8月12日

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  • Thi Le Na Vo,
  • Duc Khue Ta,
  • Anh Tuan Duong,
  • Dinh Lam Nguyen,
  • Tuan Hong Nguyen,
  • Huu Tuan Nguyen

摘要

Herein, the pure, cerium (Ce)-doped, Ce/magnesium (Mg)-codoped and Ce/nickel (Ni)-codoped TiO2 nanomaterials were synthesized using the sol–gel technique followed by calcination at the temperature of 550 °C. The concentration of Ce was maintained at 1% by weight in all doped TiO2 nanomaterials, and the concentration of Mg and Ni were equal to that of Ce in the codoped TiO2 nanomaterials. The nanomaterials underwent characterization through techniques including X-ray diffraction, diffuse reflectance UV–Vis spectroscopy, scanning electron microscopy combined with energy dispersive X-ray analysis, and Raman spectroscopy. The photocatalytic performance of the synthesized materials was assessed in terms of their ability to degrade Congo Red (CR), Rhodamine B, and Methyl Violet dyes when exposed to UV light. The findings revealed that the codoped samples exhibited significantly higher photocatalytic efficiency compared to Ce-doped TiO2. Particularly, the sample codoped with Ce and Ni demonstrated the highest degradation rate of CR dye, reaching 85.92% within 60 min.