Stimuli-responsive of magnetic metal-organic frameworks (MMOF): Synthesis,dispersion control,and its tunability into polymer matrix under the augmented-magnetic field for H2 separation and CO2 capturing applications |
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| Affiliation: | 1. Department of Physical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 16628 Prague 6, Czech Republic;2. Department of Metals and Corrosions Engineering, University of Chemistry and Technology, Prague, Technická 5, 16628 Prague 6, Czech Republic;3. Department of Inorganic Technology, University of Chemistry and Technology, Prague, Technická 5, 16628 Prague 6, Czech Republic |
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| Abstract: | Single-crystal magnetic-responsive core-shell MOF by grafting Fe3O4 nanoparticles onto the UiO-66-NH2 and their controlled embedding into gas separation mixed matrix membranes was reported. Obtained results confirmed the stimuli-responsive character of the MMOF during their dispersion of MMOF in a well-defined arrays structure in the PMMA matrix. Contrarily, an absence of a magnetic field results in the MMOF aggregation and sedimentation of the particles at the bottom of the membrane. Compared to the non-controlled ones, gas permeability increased by 26.2% for CO2 and 76.67% for H2, and selectivity increased 2.95 and 1.49 times for the CO2/N2 and H2/CO2 gas pairs, respectively. Moreover, obtained permeability-selectivity values for the H2/CO2 gas pairs overcome the appropriate modified 2008 Robeson upper bound. |
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| Keywords: | Magnetic MOF Mixed matrix membrane Magnetic field |
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