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<p>Co-doped TiO<sub>2</sub> nanoparticles were successfully synthesized using a straightforward polymer pyrolysis route. The effect of Co concentration on the structural, morphological, and magnetic properties of the nanoparticles were investigated. The X-ray diffraction (XRD) results revealed the presence of anatase, rutile, and brookite phases, with the rutile phase as the dominant phase. The average crystallites size of the nanoparticles was found to be around 20–22&#xa0;nm. Fourier transform infrared (FTIR) spectroscopy showed no significant changes in the absorption bands with increasing Co concentration. The images from both scanning electron microscopy (SEM) and transmission electron microscopy (TEM) confirmed the uniformity of the nanoparticles' size and shape. Energy-dispersive X-ray (EDX) spectroscopy revealed a progressive increase in Co atomic percentage with increasing Co concentration. Magnetization analysis showed that the nanoparticles exhibited room temperature ferromagnetic behavior, with saturation magnetization, coercive field, and retentivity increasing with increasing Co concentration. The results suggest that the polymer pyrolysis technique is a controlled method for synthesizing Co-doped TiO<sub>2</sub> nanoparticles with enhanced magnetic properties.</p>

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Co-doped TiO2 nanoparticles fabricated via polymer pyrolysis route: improved functional characteristics for diverse applications

  • 期刊论文

  • 发表日期：

    2025年7月14日

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  • Shehab A. Mansour,
  • Ashraf H. Farha,
  • Amira Ben Gouider Trabelsi,
  • Fatemah H. Alkallas

摘要

Co-doped TiO2 nanoparticles were successfully synthesized using a straightforward polymer pyrolysis route. The effect of Co concentration on the structural, morphological, and magnetic properties of the nanoparticles were investigated. The X-ray diffraction (XRD) results revealed the presence of anatase, rutile, and brookite phases, with the rutile phase as the dominant phase. The average crystallites size of the nanoparticles was found to be around 20–22 nm. Fourier transform infrared (FTIR) spectroscopy showed no significant changes in the absorption bands with increasing Co concentration. The images from both scanning electron microscopy (SEM) and transmission electron microscopy (TEM) confirmed the uniformity of the nanoparticles' size and shape. Energy-dispersive X-ray (EDX) spectroscopy revealed a progressive increase in Co atomic percentage with increasing Co concentration. Magnetization analysis showed that the nanoparticles exhibited room temperature ferromagnetic behavior, with saturation magnetization, coercive field, and retentivity increasing with increasing Co concentration. The results suggest that the polymer pyrolysis technique is a controlled method for synthesizing Co-doped TiO2 nanoparticles with enhanced magnetic properties.