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<p>This study investigates the influence of synthesis conditions on the structural and morphological properties of ZnMg₂O₄ nanoparticles prepared via the sol–gel method under two distinct ambient conditions: low temperature (ice-loaded) and ambient temperature (room temperature). X-ray diffraction (XRD) confirmed the formation of a tetragonal spinel structure, with variations in lattice parameters between the two samples. Field-emission scanning electron microscopy (FESEM) analysis revealed that the low-temperature-synthesized ZnMg₂O₄ exhibited smaller, more uniform grains, whereas the ambient-temperature-synthesized sample displayed larger grains with reduced agglomeration. Raman spectroscopy validated the high crystallinity of both samples, with characteristic vibrational modes associated with the spinel structure. Energy-dispersive X-ray (EDX) analysis indicated variations in elemental composition and oxygen content, with the low-temperature-synthesized sample exhibiting increased oxygen incorporation. Electrochemical impedance spectroscopy (EIS) measurements revealed that the low-temperature-synthesized ZnMg₂O₄ exhibited lower total resistance and enhanced charge transport behavior. These findings highlight the critical role of synthesis conditions in tuning the structural, morphological, and electrical properties of ZnMg₂O₄ nanoparticles, which could impact their applications in catalysis, gas sensing, and energy storage devices.</p>

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Influence of synthesis conditions on the structural and morphological properties of ZnMg₂O₄ nanoparticles

  • 期刊论文

  • 发表日期：

    2025年10月7日

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  • C. Ramesh Kannan,
  • S. Seenivasan,
  • A. Kumar,
  • S. Supriya,
  • A. Daniel Das,
  • V. Santhosh,
  • S. Manivannan

摘要

This study investigates the influence of synthesis conditions on the structural and morphological properties of ZnMg₂O₄ nanoparticles prepared via the sol–gel method under two distinct ambient conditions: low temperature (ice-loaded) and ambient temperature (room temperature). X-ray diffraction (XRD) confirmed the formation of a tetragonal spinel structure, with variations in lattice parameters between the two samples. Field-emission scanning electron microscopy (FESEM) analysis revealed that the low-temperature-synthesized ZnMg₂O₄ exhibited smaller, more uniform grains, whereas the ambient-temperature-synthesized sample displayed larger grains with reduced agglomeration. Raman spectroscopy validated the high crystallinity of both samples, with characteristic vibrational modes associated with the spinel structure. Energy-dispersive X-ray (EDX) analysis indicated variations in elemental composition and oxygen content, with the low-temperature-synthesized sample exhibiting increased oxygen incorporation. Electrochemical impedance spectroscopy (EIS) measurements revealed that the low-temperature-synthesized ZnMg₂O₄ exhibited lower total resistance and enhanced charge transport behavior. These findings highlight the critical role of synthesis conditions in tuning the structural, morphological, and electrical properties of ZnMg₂O₄ nanoparticles, which could impact their applications in catalysis, gas sensing, and energy storage devices.