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<p>This study synthesized a hybrid Ag<sub>2</sub>O/MgO/rice husk ash (RHA) composite using green-synthesized silver(I) oxide nanoparticles (Ag<sub>2</sub>O NPs) and the hydrothermal method. Plant leaves extracts were employed as eco-friendly reducing agents for sustainable nanomaterial production. X-ray diffraction confirmed the structural integrity of Ag<sub>2</sub>O and MgO, with RHA incorporation validated without structural alterations. Electron microscopy revealed uniformly deposited spherical particles, while X-ray photoelectron spectroscopy (XPS) detailed the composite’s composition and oxidation states. The composite demonstrated notable dielectric and antibacterial properties, with dielectric constants and losses analyzed across varying frequencies and temperatures (303–413&#xa0;K) using the Maxwell-Wagner model. Antibacterial tests showed effectiveness against <i>E. coli</i>, <i>P. aeruginosa</i>, <i>S. aureus</i>, and <i>B. subtilis</i>. These findings highlight the composite’s potential for applications in optoelectronic devices and biomedical fields, showcasing green synthesis as a promising approach in advanced material development.</p>

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Green Synthesis and Characterization of Ag2O/MgO/Rice Husk Ash Hybrid Composite: Structural, Dielectric and Antibacterial Applications

  • 期刊论文

  • 发表日期：

    2025年10月13日

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  • P. Sasikumar,
  • S. Mohanaparameswari,
  • M. Balachandramohan,
  • Manjuparkavi Murugan,
  • Roshni Murugesan,
  • Tamilselvan Silambarasan,
  • M. V. Arularasu,
  • M. Vimalan,
  • Meivelu Moovendhan

摘要

This study synthesized a hybrid Ag2O/MgO/rice husk ash (RHA) composite using green-synthesized silver(I) oxide nanoparticles (Ag2O NPs) and the hydrothermal method. Plant leaves extracts were employed as eco-friendly reducing agents for sustainable nanomaterial production. X-ray diffraction confirmed the structural integrity of Ag2O and MgO, with RHA incorporation validated without structural alterations. Electron microscopy revealed uniformly deposited spherical particles, while X-ray photoelectron spectroscopy (XPS) detailed the composite’s composition and oxidation states. The composite demonstrated notable dielectric and antibacterial properties, with dielectric constants and losses analyzed across varying frequencies and temperatures (303–413 K) using the Maxwell-Wagner model. Antibacterial tests showed effectiveness against E. coli, P. aeruginosa, S. aureus, and B. subtilis. These findings highlight the composite’s potential for applications in optoelectronic devices and biomedical fields, showcasing green synthesis as a promising approach in advanced material development.