Exceptional TcO4− sorption capacity and highly efficient ReO4− luminescence sensing by Zr4+ MOFs

Sofia Rapti; Stavros A. Diamantis; Argyro Dafnomili; Anastasia Pournara; Euaggelia Skliri; Gerasimos S. Armatas; Athanassios C. Tsipis; Ioannis Spanopoulos; Christos D. Malliakas; Mercouri G. Kanatzidis; John C. Plakatouras; Fotini Noli; Theodore Lazarides; Manolis J. Manos

doi:10.1039/C8TA07901C

Exceptional TcO₄⁻ sorption capacity and highly efficient ReO₄⁻ luminescence sensing by Zr⁴⁺ MOFs†

Sofia Rapti,‡^a Stavros A. Diamantis,‡^b Argyro Dafnomili,‡^b Anastasia Pournara,^a Euaggelia Skliri,^c Gerasimos S. Armatas,

^c Athanassios C. Tsipis,^a Ioannis Spanopoulos,

^d Christos D. Malliakas,^d Mercouri G. Kanatzidis,

^d John C. Plakatouras,*^a Fotini Noli,*^b Theodore Lazarides

*^b and Manolis J. Manos

*^a

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* Corresponding authors

^a Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece
E-mail: iplakatu@cc.uoi.gr, emanos@cc.uoi.gr

^b Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
E-mail: noli@chem.auth.gr, tlazarides@chem.auth.gr

^c Department of Materials Science and Technology, University of Crete, 71003 Heraklion, Greece

^d Department of Chemistry, Northwestern University, Evanston, IL 60208, USA

Abstract

The sorption properties of [Zr₆O₄(OH)₄(NH₃⁺-BDC)₆]Cl₆·xH₂O (MOR-1) and H₁₆[Zr₆O₁₆(H₂PATP)₄]Cl₈·xH₂O (MOR-2) towards ReO₄⁻ and TcO₄⁻ were studied in detail. Both MOR-1 and MOR-2 are very effective sorbents for ReO₄⁻ and TcO₄⁻ anions, with MOR-2 showing the highest sorption capacity (up to 4.1 ± 0.4 mmol g⁻¹) among the known metal organic materials. Importantly, the exceptional sorption capacity of MOR-2 is retained even under conditions simulating acidic nuclear waste. In addition, MOR-1 and MOR-2 exhibit selective luminescence ReO₄⁻ sensing properties, demonstrated for the first time for MOF materials.

Journal of Materials Chemistry A

Exceptional TcO₄⁻ sorption capacity and highly efficient ReO₄⁻ luminescence sensing by Zr⁴⁺ MOFs†

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Exceptional TcO₄⁻ sorption capacity and highly efficient ReO₄⁻ luminescence sensing by Zr⁴⁺ MOFs

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Journal of Materials Chemistry A