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<p>This study investigates the effect of varying La-ion content on the structural, magnetic, dielectric, and adsorption isotherms of Co<sub>0.5</sub>Mn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> for industrial wastewater treatment. Nanoparticles of La<sub>x</sub>Co<sub>0.5–x</sub>Mn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> (x = 0, 0.005, 0.010, 0.015, and 0.020 wt.%) were successfully synthesized using the sol-gel auto-combustion method. XRD patterns confirmed the formation of a new singlephase cubic spinel structure. The surface microstructure of the composites was examined using field emission scanning electron microscopy (FE-SEM). EDS analysis confirmed the presence of expected chemical elements in the samples. Fourier transform infrared (FT-IR) spectroscopy is used to identify and quantify molecular vibrations of the samples. The magnetic properties, measured using a vibrating sample magnetometer (VSM), revealed that the saturation magnetization increased gradually from 16.328 emu/g to 66.247 emu/g with increasing La-doping. The dielectric properties of the samples, such as the dielectric constant (ε′) and dielectric loss factor (ε′′), were also studied. Additionally, the samples' heavy-metal adsorption capacity was evaluated, with the La = 0.02 wt.% sample exhibiting the highest Cr(VI) removal efficiency from wastewater.</p>

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Nanoceramic of Co0.5Mn0.5Fe2O4 Doped with La-Ion for Industrial Wastewater Treatment Application

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Ahmed El-Tantawy,
  • Mahmoud Rasmy,
  • Omayma A. El-kady,
  • Ahmed I. Ali,
  • Jong Yeog Son,
  • R. Abd-ElHameed,
  • Nasser M. Ayoub,
  • Galal H. Ramzy

摘要

This study investigates the effect of varying La-ion content on the structural, magnetic, dielectric, and adsorption isotherms of Co0.5Mn0.5Fe2O4 for industrial wastewater treatment. Nanoparticles of LaxCo0.5–xMn0.5Fe2O4 (x = 0, 0.005, 0.010, 0.015, and 0.020 wt.%) were successfully synthesized using the sol-gel auto-combustion method. XRD patterns confirmed the formation of a new singlephase cubic spinel structure. The surface microstructure of the composites was examined using field emission scanning electron microscopy (FE-SEM). EDS analysis confirmed the presence of expected chemical elements in the samples. Fourier transform infrared (FT-IR) spectroscopy is used to identify and quantify molecular vibrations of the samples. The magnetic properties, measured using a vibrating sample magnetometer (VSM), revealed that the saturation magnetization increased gradually from 16.328 emu/g to 66.247 emu/g with increasing La-doping. The dielectric properties of the samples, such as the dielectric constant (ε′) and dielectric loss factor (ε′′), were also studied. Additionally, the samples' heavy-metal adsorption capacity was evaluated, with the La = 0.02 wt.% sample exhibiting the highest Cr(VI) removal efficiency from wastewater.