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<p>In this investigation, we have developed a synthesis technique for Bixbyite phase nanoparticles&#xa0;</p><p>(Mn<sub>0.014</sub> Fe<sub>1.986</sub>)O<sub>3</sub> and various nanocomposites based on reduced graphene oxide (rGO). These nanomaterials are prepared by refluxed condensation method using solvent water mixture. Different characterization techniques such as, X-ray diffraction patterns reveal the formation of bixbyite nanocrystalline structure of (MnFe)<sub>2</sub>O<sub>3</sub> nanoparticles on rGO, FTIR and UV–Visible studies also have confirmed the formation of virgin materials and also other nanocomposites. The electron microscopy images show that the nanoparticles grown on rGO of size range 18–70&#xa0;nm varying upon the composition. The congo red (CR) dye can be effectively removed from aqueous solutions by these nanocomposites due to their high adsorption capacity. The adsorption capability with good correlation coefficients is confirmed to be explained by Freundlich and Langmuir adsorption isotherm models. In four additional cycles, the nanocomposites' adsorption capabilities demonstrated good recyclability behavior. The adsorption processes of CR dye on rGO sheets has been examined with thermodynamics. One of the nanocomposite has demonstrated as potential antibacterial agent against several bacterial strains and as an effective scavenger for trapping 2,2-diphenyl-1-picrylhydrazyl hydrate (DPPH) free radicals.</p>

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Understanding the multiple applications of reduced graphene oxide-bixbyite type (MnFe)2O3 nanocomposite: adsorbent, antioxidant and antimicrobial properties

  • 期刊论文

  • 发表日期：

    2025年5月26日

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  • Subrata Maity,
  • Bapan Bairy,
  • Sayani Saha,
  • Sourav Bhowmick,
  • Parnab Bhabak,
  • Rajlakshmi Laha,
  • Somasri Dam,
  • Moni Baskey Sen

摘要

In this investigation, we have developed a synthesis technique for Bixbyite phase nanoparticles 

(Mn0.014 Fe1.986)O3 and various nanocomposites based on reduced graphene oxide (rGO). These nanomaterials are prepared by refluxed condensation method using solvent water mixture. Different characterization techniques such as, X-ray diffraction patterns reveal the formation of bixbyite nanocrystalline structure of (MnFe)2O3 nanoparticles on rGO, FTIR and UV–Visible studies also have confirmed the formation of virgin materials and also other nanocomposites. The electron microscopy images show that the nanoparticles grown on rGO of size range 18–70 nm varying upon the composition. The congo red (CR) dye can be effectively removed from aqueous solutions by these nanocomposites due to their high adsorption capacity. The adsorption capability with good correlation coefficients is confirmed to be explained by Freundlich and Langmuir adsorption isotherm models. In four additional cycles, the nanocomposites' adsorption capabilities demonstrated good recyclability behavior. The adsorption processes of CR dye on rGO sheets has been examined with thermodynamics. One of the nanocomposite has demonstrated as potential antibacterial agent against several bacterial strains and as an effective scavenger for trapping 2,2-diphenyl-1-picrylhydrazyl hydrate (DPPH) free radicals.