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<p>The reckless discharge of dye-laden wastewater by textile industries poses serious environmental threats. Developing efficient photocatalysts to break harmful dyes into less toxic compounds has become increasingly crucial. This study investigates the magnetic behavior and photocatalytic performance of Ce<sup>3+</sup>-doped Mg-Zn ferrite/CNTs composite for degrading the Methylene Blue (MB) dye under sunlight. Synthesized using the co-precipitation route, the samples were characterized by X-ray diffraction, which confirmed the formation of a spinel ferrite integrated with carbon nanotubes (CNTs). Meanwhile, TEM analysis revealed a spherical morphology with particle sizes ranging from 8.04 to 12.34&#xa0;nm. Magnetic measurements at room temperature under an applied field of ± 15 kOe revealed enhanced superparamagnetism, characterized by low coercivity and remanence. A decrease in band gap is observed with increasing Ce<sup>3+</sup> concentration. Photocatalytic tests showed significant improvement in dye degradation, with CMZC10 achieving 93.83% efficiency within 90&#xa0;min. The results highlight Ce<sup>3+</sup>-doped Mg-Zn ferrite/CNT composites as a promising multifunctional material for environmental remediation, featuring magnetic recovery and reusability with minimal loss in efficiency upon reuse.</p>

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Ce3+-Doped Mg-Zn Ferrite/CNTs Hybrid Nanocomposites for Efficient Sunlight-Driven Dye Degradation

  • 期刊论文

  • 发表日期：

    2025年10月10日

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  • Parveen Kumari,
  • Krishan Kumar

摘要

The reckless discharge of dye-laden wastewater by textile industries poses serious environmental threats. Developing efficient photocatalysts to break harmful dyes into less toxic compounds has become increasingly crucial. This study investigates the magnetic behavior and photocatalytic performance of Ce3+-doped Mg-Zn ferrite/CNTs composite for degrading the Methylene Blue (MB) dye under sunlight. Synthesized using the co-precipitation route, the samples were characterized by X-ray diffraction, which confirmed the formation of a spinel ferrite integrated with carbon nanotubes (CNTs). Meanwhile, TEM analysis revealed a spherical morphology with particle sizes ranging from 8.04 to 12.34 nm. Magnetic measurements at room temperature under an applied field of ± 15 kOe revealed enhanced superparamagnetism, characterized by low coercivity and remanence. A decrease in band gap is observed with increasing Ce3+ concentration. Photocatalytic tests showed significant improvement in dye degradation, with CMZC10 achieving 93.83% efficiency within 90 min. The results highlight Ce3+-doped Mg-Zn ferrite/CNT composites as a promising multifunctional material for environmental remediation, featuring magnetic recovery and reusability with minimal loss in efficiency upon reuse.