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Synthesis and Characterization of Iron Particles Hosted in Porous Alumina

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Abstract

Fe/Al2O3 composite consisting of iron particles dispersed in a porous alumina host has been prepared by wet impregnation and subsequent heat treatment in hydrogen. Thermogravimetric and differential thermal analysis was used to study the thermal behavior of Fe(NO3)3 loaded in porous alumina. H2-temperature programmed reduction was adopted to analyze the reduction behavior of α-Fe2O3 loaded into porous alumina. The morphology and particle size of the magnetic particles were evaluated by scanning electron microscope, while the phase identification and structural analysis of the samples were examined by X-ray diffraction technique. The magnetic properties of the nanocomposite were investigated by means of vibrating sample magnetometer and 57Fe Mössbauer spectrometry. The Mössbauer spectra indicated that all of the α-Fe2O3 changed into α-Fe during the reduction process; and, microscopic observations revealed that iron particles with an average diameter of ~200 nm were dispersed homogeneously on the pore walls of the porous alumina.

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Acknowledgments

The authors acknowledge the supports of National Natural Science Foundation of China (50772061, 51172131), Program for New Century Excellent Talents in University (NCET-10-518), Provincial Science and Technology Development Project of Shandong (2007GG10003007, 2007BS04032), and Independent Innovation Foundation of Shandong University (IIFSDU-2010JQ002, GIIFSDU-YYX10011).

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Authors and Affiliations

  1. Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials, Shandong University, Ministry of Education, Jinan, 250061, China

    Zhicheng Shi, Zidong Zhang, Runhua Fan, Meng Gao & Jingyan Guo

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  1. Zhicheng Shi
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  2. Zidong Zhang
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  3. Runhua Fan
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  4. Meng Gao
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  5. Jingyan Guo
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Correspondence to Runhua Fan.

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Shi, Z., Zhang, Z., Fan, R. et al. Synthesis and Characterization of Iron Particles Hosted in Porous Alumina. J Inorg Organomet Polym 21, 836–840 (2011). https://doi.org/10.1007/s10904-011-9584-5

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  • DOI: https://doi.org/10.1007/s10904-011-9584-5

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