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<p>Composite powders of xBiOCl/(1 – <i>x</i>)Co<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> (<i>x</i> = 0, 0.2, 0.5, 0.8, and 1) were synthesized via a wet chemical route at room temperature by mechanically dispersing BiOCl and Co<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> in ethanol. Each precursor material was synthesized separately using a co-precipitation method. The structural, morphological, vibrational, optical, and electrical properties of the samples were systematically investigated using X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM–EDX), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy (RS), diffuse reflectance spectroscopy (DRS), and impedance spectroscopy measurements (EIS). XRD confirmed the coexistence of pure BiOCl and Co<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> phases, with no detectable impurities, and the successful formation of biphasic composite structures. SEM images revealed a progressive morphological transformation with increasing BiOCl content, while EDX elemental mapping confirmed the homogeneous distribution of constituent elements. FTIR and Raman analyses validated the structural findings by identifying characteristic vibrational modes of both phases. DRS measurements showed a tunable band gap ranging from 2.83 to 3.1&#xa0;eV depending on BiOCl content. EIS demonstrated enhanced electrical conductivity and dielectric properties with increasing BiOCl fraction. This comprehensive study confirms the multifunctional potential of xBiOCl/(1 – <i>x</i>)Co<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> composites for applications in photocatalysis, dielectric devices, and energy-related technologies.</p> Graphical abstract <p></p>

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Synthesis and characterization of BiOCl/Co3(PO4)2 hybrid composite: evaluation of structural, optical and electrical properties

  • 期刊论文

  • 发表日期：

    2026年3月19日

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  • Abdessalam Bouddouch,
  • Younes Chaali,
  • Hind Tabia,
  • Jihad El Makaoui,
  • Khadija El Fakir,
  • Youssef Messak,
  • Mohammed Dahbi,
  • Elmouloudi Sabbar,
  • Driss Zakaria

摘要

Composite powders of xBiOCl/(1 – x)Co3(PO4)2 (x = 0, 0.2, 0.5, 0.8, and 1) were synthesized via a wet chemical route at room temperature by mechanically dispersing BiOCl and Co3(PO4)2 in ethanol. Each precursor material was synthesized separately using a co-precipitation method. The structural, morphological, vibrational, optical, and electrical properties of the samples were systematically investigated using X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM–EDX), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy (RS), diffuse reflectance spectroscopy (DRS), and impedance spectroscopy measurements (EIS). XRD confirmed the coexistence of pure BiOCl and Co3(PO4)2 phases, with no detectable impurities, and the successful formation of biphasic composite structures. SEM images revealed a progressive morphological transformation with increasing BiOCl content, while EDX elemental mapping confirmed the homogeneous distribution of constituent elements. FTIR and Raman analyses validated the structural findings by identifying characteristic vibrational modes of both phases. DRS measurements showed a tunable band gap ranging from 2.83 to 3.1 eV depending on BiOCl content. EIS demonstrated enhanced electrical conductivity and dielectric properties with increasing BiOCl fraction. This comprehensive study confirms the multifunctional potential of xBiOCl/(1 – x)Co3(PO4)2 composites for applications in photocatalysis, dielectric devices, and energy-related technologies.

Graphical abstract