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Issue 4, 2020
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Water-stable 2-D Zr MOFs with exceptional UO22+ sorption capability

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Abstract

Two new 8-connected 2-D MOFs, UCY-13 and UCY-14, based on Zr6 secondary building units (SBUs) and angular dicarboxylate ligands are reported. UCY-13 and UCY-14 display remarkable stability in various types of aqueous media, an appreciable internal surface area of 925 m2 g−1 and 678 m2 g−1, respectively, and are the first examples of 2-D MOFs investigated for their uranyl sorption capability. They exhibit exceptional UO22+ sorption capacities of 984 mg g−1 for UCY-13 and 471 mg g−1 for UCY-14 and the ability to sorb UO22+ from various types of real-world aqueous media. Both sorbents were proven to immobilize UO22+ ions, thus being unique examples of MOFs that can be potentially employed as barrier materials for environmental application. Their exceptional sorption properties are attributed to the 2-D nature and structural features directly derived from it such as the presence of several easily accessible coordination sites in the Zr6 SBUs.

Graphical abstract: Water-stable 2-D Zr MOFs with exceptional UO22+ sorption capability

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Article information


Submitted
27 Sep 2019
Accepted
30 Nov 2019
First published
02 Dec 2019

J. Mater. Chem. A, 2020,8, 1849-1857
Article type
Paper

Water-stable 2-D Zr MOFs with exceptional UO22+ sorption capability

N. Panagiotou, I. Liatsou, A. Pournara, G. K. Angeli, R. M. Giappa, E. Tylianakis, M. J. Manos, G. E. Froudakis, P. N. Trikalitis, I. Pashalidis and A. J. Tasiopoulos, J. Mater. Chem. A, 2020, 8, 1849
DOI: 10.1039/C9TA10701K

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