A remarkable increase in the adsorbed H-2 amount: influence of pore size distribution on the H-2 adsorption capacity of Fe-BTC

Yurduşen, Aysu and Yürüm, Alp and Yürüm, Yuda (2020) A remarkable increase in the adsorbed H-2 amount: influence of pore size distribution on the H-2 adsorption capacity of Fe-BTC. International Journal of Hydrogen Energy, 45 (22). pp. 12394-12407. ISSN 0360-3199 (Print) 1879-3487 (Online)

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Abstract

Here we show the crucial role of ultramicropores on the adsorbed H2 amount. By synthesizing Fe-BTCs via a perturbation assisted nanofusion synthesis strategy and by the control of textural porosity via Fe:BTC ratio, BET surface area (1312 m2/g), total pore volume (1.41 cm3/g), and H2 adsorption capacity (1.10 wt% at 7.6 bar and 298 K) were enhanced by 1.6, 3.1, and 2.6 times, respectively. The reported BET surface area, and the total pore volume are the highest of those reported for Fe-BTC, to date. The enhanced H2 adsorption capacity of Fe-BTC-3 is attributed to the ultramicropores present in its pore structure. Presence of ultramicropores maximizes van der Waals potential, and the adsorbed H2 amount increases. By the perturbation assisted nanofusion synthesis strategy and the control over textural porosity, an Fe-BTC that possesses a H2 adsorption capacity higher than those of reported MOFs with higher BET surface areas has been reported.
Item Type: Article
Uncontrolled Keywords: H-2 adsorption capacity; Metal-organic frameworks; Fe-BTC; Hierarchical pores; Pore size distribution; Ultramicropores
Divisions: Faculty of Engineering and Natural Sciences > Basic Sciences > Chemistry
Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Sabancı University Nanotechnology Research and Application Center
Faculty of Engineering and Natural Sciences
Depositing User: Aysu Yurduşen
Date Deposited: 29 Apr 2020 12:13
Last Modified: 31 Jul 2023 22:05
URI: https://research.sabanciuniv.edu/id/eprint/39825

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