Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5145561 | International Journal of Hydrogen Energy | 2017 | 9 Pages |
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 (â¼520Â m2/g) and micropore volume (â¼0.2Â cm3/g), were calculated for the activated sample based on N2 gas sorption data collected at 77Â K. The H2 storage performance was preliminary assessed by low-pressure (0-1Â bar) H2 gas adsorption and desorption measurements at 77Â 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 â¼1Â wt.% under close-to-atmospheric pressure conditions.
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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,