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<p>The hydrothermal method was employed to synthesize Bi<sub>4</sub>V<sub>2 − x</sub>Mn<sub>x</sub>O<sub>11+δ</sub> nanoparticles with varying compositions (x = 0.1, 0.2, 0.3, and 0.4) in this study, as well as the solid-state reaction method for composition x = 0.2. The resulting powders underwent comprehensive characterization using XRD, Raman, TGA/DTA, FTIR, SEM-EDS, and UV-vis techniques. It was found that the chosen synthesis method exerted a significant influence on the crystallinity and morphology of the materials under investigation. The obtained BiMnVOx phases were observed to crystallize in the γ-tetragonal phase. The synthesized powders exhibited a morphology characterized by spherical nanoparticle. To assess the stability of the BiMnVOx samples, TGA/DTA analysis was performed, revealing the stability of the tetragonal γ-phase. DRS spectra revealed a decrease in bandgap with increasing Mn doping. These results suggest that the synthesized BiMeVOx materials have potential applications in energy storage, catalysis and electronic devices due to their tunable optical and structural properties.</p>

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Synthesis and Characterization of Bi4V2 − xMnxO11+δ Nanoparticles: Influence of Synthesis Method on Crystallinity, Morphology, and Bandgap

  • 期刊论文

  • 发表日期：

    2025年5月16日

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  • Abdelmajid Agnaou,
  • Wafaa Mhaira,
  • Rachida Essalim,
  • Maati Alga,
  • Mohamed Zamama,
  • Abdelaziz Ammar

摘要

The hydrothermal method was employed to synthesize Bi4V2 − xMnxO11+δ nanoparticles with varying compositions (x = 0.1, 0.2, 0.3, and 0.4) in this study, as well as the solid-state reaction method for composition x = 0.2. The resulting powders underwent comprehensive characterization using XRD, Raman, TGA/DTA, FTIR, SEM-EDS, and UV-vis techniques. It was found that the chosen synthesis method exerted a significant influence on the crystallinity and morphology of the materials under investigation. The obtained BiMnVOx phases were observed to crystallize in the γ-tetragonal phase. The synthesized powders exhibited a morphology characterized by spherical nanoparticle. To assess the stability of the BiMnVOx samples, TGA/DTA analysis was performed, revealing the stability of the tetragonal γ-phase. DRS spectra revealed a decrease in bandgap with increasing Mn doping. These results suggest that the synthesized BiMeVOx materials have potential applications in energy storage, catalysis and electronic devices due to their tunable optical and structural properties.