Magnetism of iron-containing MCM-41 spheres |
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| Affiliation: | 1. Cellular and Neural Engineering Group, Institute for Science and Technology in Medicine, Keele University, Keele, Staffordshire, United Kingdom;2. Department of Surgery, Drexel University College of Medicine, Philadelphia, PA, USA;3. Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, PA, USA;4. Department of Chemical Engineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, United Kingdom;1. Department of Materials Science and Engineering, MingDao University, 369, Wen-Hua Road, Peetow, Changhua, Taiwan, ROC;2. Department of Mechatronics Engineering, National Changhua University of Education, Changhua 500, Taiwan, ROC |
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| Abstract: | Iron species were loaded into the mesopores of MCM-41 spheres by incipient wetness impregnation procedure with Fe(ACAC)3 as the precursor. The magnetism of the samples was studied by vibrating sample magnetometer (VSM), diffuse reflectance ultraviolet–visible (DRUV-vis) spectra and Mossbauer spectra. The results show that the magnetic behavior of the iron-loaded MCM-41 spheres depends on the content of iron loading, valence, and coordination state of iron ions, testing temperature and the atmosphere for the pyrolysis of the iron precursor. |
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