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Water - Stable 2-D Zr MOFs with Exceptional UO22+ Sorption Capability

Nikolaos Panayiotou,   Ioanna Liatsou,   Anastasia Pournara,   Giasemi K. Aggeli,   Rafaella Maria Giappa,   Emmanuel Tyllianakis,   Manolis J. Manos,   George Froudakis,   Pantelis Trikalitis,   I. Pashalidis  and  Anastasios Tasiopoulos  

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, appreciable internal surface area of 925 m2/g and 678 m2/g, respectively and are the first examples of 2-D MOFs that were investigated for their uranyl sorption capability. They exhibit exceptional UO22+ sorption capacities of 984 mg/g for UCY-13 and 471 mg/g for UCY-14 and ability to sorb UO22+ from various types of real – world aqueous media. Both sorbents were proven to immobilize UO22+ ions 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.

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Publication details

The article was received on 27 Sep 2019, accepted on 30 Nov 2019 and first published on 02 Dec 2019


Article type: Paper
DOI: 10.1039/C9TA10701K
J. Mater. Chem. A, 2019, Accepted Manuscript

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    Water - Stable 2-D Zr MOFs with Exceptional UO22+ Sorption Capability

    N. Panayiotou, I. Liatsou, A. Pournara, G. K. Aggeli, R. M. Giappa, E. Tyllianakis, M. J. Manos, G. Froudakis, P. Trikalitis, I. Pashalidis and A. Tasiopoulos, J. Mater. Chem. A, 2019, Accepted Manuscript , DOI: 10.1039/C9TA10701K

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