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<p>Ce<sup>3</sup>⁺-doped spinel nanoferrites with composition Ni<sub>0.4</sub>Co<sub>0.3</sub>Zn<sub>0.3</sub>Ce<sub>x</sub>Fe<sub>2-x</sub>O<sub>4</sub> (x = 0.00–0.10) were synthesized using the citrate combustion method, and their optical, photocatalytic, and radiation shielding properties were investigated. Diffuse reflectance spectroscopy revealed that the optical band gap varies with Ce content, reaching its lowest value for NiCoZnCeF-0.10 due to structural modifications and defect formation. Photocatalytic experiments using methylene blue (MB) dye showed a strong enhancement in degradation efficiency from 30% for NiCoZnCeF-0.00 to 97.44% for NiCoZnCeF-0.10 within 60&#xa0;min under xenon lamp irradiation. The catalyst also exhibited excellent stability, maintaining 95.23% degradation efficiency after five recycling cycles. Radiation shielding analysis indicated that Ce incorporation improves attenuation properties, with the linear attenuation coefficient increasing from 229.75 to 245.06&#xa0;cm⁻<sup>1</sup> at 0.015&#xa0;MeV as Ce concentration increased from x = 0.00 to x = 0.10. These results demonstrate that Ce-doped Ni–Co–Zn nanoferrites are promising multifunctional materials for wastewater treatment and radiation shielding applications.</p>

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Structural, optical, and photocatalytic properties of Ce doped Ni–Co–Zn ferrite nanoparticles for environmental and radiation shielding applications

  • 期刊论文

  • 发表日期：

    2026年7月1日

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  • M. S. Sadeq,
  • Abeer A. Alghamdi,
  • Nadiyah Alahmadi,
  • Fatimah M. Alsaiari,
  • N. I. Aljuraide,
  • Awatif Alshamari,
  • M. I. Sayyed,
  • M. A. Abdo

摘要

Ce3⁺-doped spinel nanoferrites with composition Ni0.4Co0.3Zn0.3CexFe2-xO4 (x = 0.00–0.10) were synthesized using the citrate combustion method, and their optical, photocatalytic, and radiation shielding properties were investigated. Diffuse reflectance spectroscopy revealed that the optical band gap varies with Ce content, reaching its lowest value for NiCoZnCeF-0.10 due to structural modifications and defect formation. Photocatalytic experiments using methylene blue (MB) dye showed a strong enhancement in degradation efficiency from 30% for NiCoZnCeF-0.00 to 97.44% for NiCoZnCeF-0.10 within 60 min under xenon lamp irradiation. The catalyst also exhibited excellent stability, maintaining 95.23% degradation efficiency after five recycling cycles. Radiation shielding analysis indicated that Ce incorporation improves attenuation properties, with the linear attenuation coefficient increasing from 229.75 to 245.06 cm⁻1 at 0.015 MeV as Ce concentration increased from x = 0.00 to x = 0.10. These results demonstrate that Ce-doped Ni–Co–Zn nanoferrites are promising multifunctional materials for wastewater treatment and radiation shielding applications.