Iron oxide nanoparticles stabilized inside highly ordered mesoporous silica |
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| Authors: | A Bhaumik S Samanta N K Mal |
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| Institution: | (1) Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, 700 032 Kolkata, India;(2) Dynamic Materials Research Group, National Institute of Advance Science & Technology (AIST), Kansai Center, 1-8-31, 563-8577 Osaka, Japan |
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| 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 |
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| Keywords: | Mesoporous MCM-41 nanomaterials iron oxide impregnation |
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