Solvothermal synthesis,nanostructural characterization and gas cryo-adsorption studies in a metal–organic framework (IRMOF-1) material |
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Authors: | Vasileios Tzitzios Nikolaos Kostoglou Maria Giannouri Georgia Basina Christos Tampaxis Georgia Charalambopoulou Theodore Steriotis Kyriaki Polychronopoulou Charalambos Doumanidis Christian Mitterer Claus Rebholz |
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Affiliation: | 1. National Center for Scientific Research Demokritos, Agia Paraskevi Attikis, 15310 Athens, Greece;2. Department of Physical Metallurgy and Materials Testing, Montanuniversit?t Leoben, 8700 Leoben, Austria;3. Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia, Cyprus;4. Department of Chemistry, University of Crete, Voutes Campus, 71003 Heraklion, Greece;5. Department of Mechanical Engineering, Khalifa University of Science, Technology and Research, P.O. Box 127788 Abu Dhabi, United Arab Emirates |
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Abstract: | A nanoporous metal–organic framework material, exhibiting an IRMOF-1 type crystalline structure, was prepared by following a direct solvothermal synthesis approach, using zinc nitrate and terephthalic acid as precursors and dimethylformamide as solvent, combined with supercritical CO2 activation and vacuum outgassing procedures. A series of advanced characterization methods were employed, including scanning electron microscopy, Fourier-transform infrared radiation spectroscopy and X-ray diffraction, in order to study the morphology, surface chemistry and structure of the IRMOF-1 material directly upon its synthesis. Porosity properties, such as Brunauer–Emmet–Teller (BET) specific area (~520 m2/g) and micropore volume (~0.2 cm3/g), were calculated for the activated sample based on N2 gas sorption data collected at 77 K. The H2 storage performance was preliminary assessed by low-pressure (0–1 bar) H2 gas adsorption and desorption measurements at 77 K. The activated IRMOF-1 material of this study demonstrated a fully reversible H2 sorption behavior combined with an adequate gravimetric H2 uptake relative to its BET specific area, thus achieving a value of ~1 wt.% under close-to-atmospheric pressure conditions. |
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Keywords: | IRMOF-1 Solvothermal synthesis Structure Porosity Gas adsorption Hydrogen storage |
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