Magnetic porous carbons with high adsorption capacity synthesized by a microwave-enhanced high temperature ionothermal method from a Fe-based metal-organic framework |
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| Affiliation: | 1. Naval Surface Warfare Center, Carderock Division, Bethesda, MD 20817, United States;2. MIT-Lincoln Laboratory, Lexington, MA 02420, United States;1. School of Materials Science and Engineering, Beihang University, Beijing 100191, China;2. School of Chemistry and Environment, Beihang University, Beijing 100191, China;3. College of Science, Air Force Engineering University, Xi''an, Shanxi 710051, China;1. Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan;2. College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, PR China;3. Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan;4. Institut de Recherche en Sciences de la Santé/Direction Régionale du Centre Ouest (IRSS/DRCO), BP 218, 11, Nanoro, Burkina Faso;1. College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, EX4 4QF, United Kingdom;2. State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, PR China |
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| Abstract: | Magnetic porous carbons with high surface areas were easily synthesized from a Fe-based metal-organic framework (MOF) by a novel microwave-enhanced high temperature ionothermal method. By choosing a Fe-based MOF called MIL-100(Fe) as both a Fe and C precursor and a porous template, and furfuryl alcohol as a second precursor, a series of γ-Fe2O3/C composites with strong magnetism were prepared in 3 min by a microwave-enhanced high temperature ionothermal method. Structure, morphology and magnetic property, as well as porosity of the products, were carefully studied by powder X-ray diffraction, X-ray photoelectron spectroscopy, the BET surface area method, thermogravimetry, vibrating sample magnetometry, scanning electron microscopy, and high resolution transmission electron microscopy. The obtained γ-Fe2O3/C composites possess both high surface areas and magnetic characteristics. Their adsorption properties were preliminarily tested by the adsorptive removal of methylene blue from aqueous solution. The results suggest that such magnetic carbon composite exhibited high adsorption capacity (303.95 mg g?1) and fast adsorption kinetics, as well as a perfect magnetic separation performance (Ms = 4.12–19.54 emu g?1), for the MB removal from aqueous solution. |
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