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Issue 26, 2016
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Predicting 1,3,5,7-tetrakis(4-aminophenyl)adamantine based covalent-organic frameworks as hydrogen storage materials

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Abstract

Four types of 1,3,5,7-tetrakis(4-aminophenyl)adamantine based covalent-organic frameworks (tapa-COFs) have been designed with diamond, ctn and bor net topologies using the methods of molecular mechanics and density function theory. Their low density (0.096–0.258 g cm−3), high porosity (90–96%) and large H2 accessible surface area (5511–6810 m2 g−1) forecast excellent hydrogen uptake capacities. The grand canonical Monte Carlo (GCMC) simulation revealed that at 77 K tapa-COF-1 possesses the highest gravimetric hydrogen storage capacity at 49.10 wt%, while tapa-COF-3 has the highest volumetric hydrogen storage capacity at 58.66 g L−1. Impressively, at 298 K, tapa-COF-1 and tapa-COF-2 possess rather high gravimetric hydrogen uptake capacities, which exceed both the U.S. Department of Energy’s goal (5.5 wt%) for onboard light-duty vehicles for 2020 and the criterion of 6 wt% for commercial use of hydrogen at room temperature. In addition, the possible schemes are also proposed to synthesize the tapa-COFs.

Graphical abstract: Predicting 1,3,5,7-tetrakis(4-aminophenyl)adamantine based covalent-organic frameworks as hydrogen storage materials

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Article information


Submitted
24 Nov 2015
Accepted
17 Feb 2016
First published
17 Feb 2016

RSC Adv., 2016,6, 21517-21525
Article type
Paper

Predicting 1,3,5,7-tetrakis(4-aminophenyl)adamantine based covalent-organic frameworks as hydrogen storage materials

X. Li, S. Feng, F. Guo, X. Liu, J. Yu and Z. Hou, RSC Adv., 2016, 6, 21517
DOI: 10.1039/C5RA24933C

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