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<p>In this study, pure, Nickel, and Cobalt-doped ZnO nanofibers are synthesized successfully by an electrospinning technique. The Ni<sup>2+</sup> and Co<sup>2+</sup> ions doping effect on the structural, morphological, optical, and magnetic behavior of ZnO nanofibers are investigated by scanning electron microscopy (SEM), powder X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), UV-vis diffuse reflectance spectrophotometer (DRS), Vibrating sample magnetometer (VSM). The XRD analysis results reveal that all samples have hexagonal wurtzite structures. Ni and Co atoms have been successfully incorporated in tetrahedral sites and no secondary phases were detected. DRS spectra indicates that the band gap value varied from 3.18&#xa0;eV for ZnO to 3.20&#xa0;eV for ZnO: Ni and 2.82&#xa0;eV for ZnO: Co. The FTIR spectra exhibit the characteristics absorbance peaks at 438&#xa0;cm<sup>−1</sup>, 432&#xa0;cm <sup>−1</sup>, and 437&#xa0;cm<sup>−1</sup> for pure, Ni-doped ZnO, and Co-doped, respectively. The VSM results show all sample’s ferromagnetic behavior at room temperature.</p>

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Electrospun preparation of nickel and Cobalt-doped ZnO fibers: study on the physical properties

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月29日

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  • Fatemeh Heydari Vieii,
  • Roya Shokrani Havigh,
  • Hossein Mahmoudi Chenari

摘要

In this study, pure, Nickel, and Cobalt-doped ZnO nanofibers are synthesized successfully by an electrospinning technique. The Ni2+ and Co2+ ions doping effect on the structural, morphological, optical, and magnetic behavior of ZnO nanofibers are investigated by scanning electron microscopy (SEM), powder X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), UV-vis diffuse reflectance spectrophotometer (DRS), Vibrating sample magnetometer (VSM). The XRD analysis results reveal that all samples have hexagonal wurtzite structures. Ni and Co atoms have been successfully incorporated in tetrahedral sites and no secondary phases were detected. DRS spectra indicates that the band gap value varied from 3.18 eV for ZnO to 3.20 eV for ZnO: Ni and 2.82 eV for ZnO: Co. The FTIR spectra exhibit the characteristics absorbance peaks at 438 cm−1, 432 cm −1, and 437 cm−1 for pure, Ni-doped ZnO, and Co-doped, respectively. The VSM results show all sample’s ferromagnetic behavior at room temperature.