An rht-type metal–organic framework constructed from an unsymmetrical ligand exhibiting high hydrogen uptake capability?

RSC Advances Pub Date: 2014-10-08 DOI: 10.1039/C4RA07101H

Abstract

An unsymmetrical hexatopic carboxylate acid (H6-1) ligand containing one acrylamide unit and two triazole groups was designed and synthesized, and then used to construct a metal–organic framework (MOF Cu-ABTA) via a solvothermal reaction with Cu(NO3)2. A powder X-ray diffraction investigation indicated that the MOF Cu-ABTA possesses a (3,24)-connected rht-network, as does our previously reported MOF NTU-105 with three triazole groups. The gas sorption measurements revealed that Cu-ABTA shows high porosity and a very high H2-uptake capability with a strong H2 binding affinity as demonstrated by the enhanced isosteric heat of adsorption, which make it a highly promising candidate for clean energy storage.

Graphical abstract: An rht-type metal–organic framework constructed from an unsymmetrical ligand exhibiting high hydrogen uptake capability
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