• Iron oxide nanoparticles stabilized inside highly ordered mesoporous silica

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    • Keywords

       

      Mesoporous MCM-41; nanomaterials; iron oxide; impregnation

    • Abstract

       

      Nanosized iron oxide, a moderately large band-gap semiconductor and an essential component of optoelectrical and magnetic devices, has been prepared successfully inside the restricted internal pores of mesoporous silica material throughin-situ reduction during impregnation. The samples were characterized by powder XRD, TEM, SEM/EDS, N2 adsorption, FT-IR and UV-visible spectroscopies. Characterization data indicated well-dispersed isolated nanoclusters of (Fe2O3)n, within the internal surface of 2D-hexagonal mesoporous silica structure. No occluded Fe/Fe2O3 crystallites were observed at the external surface of the mesoporous silica nanocomposites. Inorganic mesoporous host, such as hydrophilic silica in the pore walls, directs a physical constraint necessary to prevent the creation of large Fe2O3 agglomerates and enables the formation of nanosized Fe2O3 particles inside the mesopore

    • Author Affiliations

       

      A Bhaumik1 S Samanta1 N K Mal2

      1. Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata - 700 032, India
      2. Dynamic Materials Research Group, National Institute of Advance Science & Technology (AIST), Kansai Center, 1-8-31, Osaka - 563-8577, Japan
    • Dates

       
  • Pramana – Journal of Physics | News

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