Journal Article

PUBDB-2025-02401

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Probing the high radiation tolerance of minor actinide selective zirconium phosphonate sorbents

Cataldo, T. ; Charpentier, T. ; Landrot, G. ; Chua, S.Extern* ; Bedford, N. (Corresponding author)Extern* ; Veliscek-Carolan, J. (Corresponding author) ; Le Caër, S. (Corresponding author)

2025
RSC London ˜[u.a.]œ

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Please use a persistent id in citations: doi:10.1039/D4TA08221D  doi:10.3204/PUBDB-2025-02401

Abstract: Minor actinide (MA) selective materials that are resistant to radiation are necessary to enable separation of MAs from lanthanides in nuclear wastes. Zirconium(IV) phosphonates (ZrPs) are a class of amorphous coordination polymers with promising applications as a solid-phase sorbent for MA-lanthanide separations. In this study, a zirconium phosphonate sorbent (ZrPTP) that intramolecularly incorporates the MA-selective 2,6-bis(1,2,3-triazol-4-yl)pyridine (PTP) ligand was synthesised and evaluated for radiation tolerance with high energy electron irradiation to doses of 2 MGy. The MA sorption selectivity of ZrPTP before and after irradiation was compared using Am and Eu. ZrPTP demonstrated maintained selectivity for Am over Eu even after a 2 MGy dose. Synchrotron radiation characterisation techniques and solid-state NMR were employed to accurately assess the average local structure before and after irradiation, where minor amounts of Zr–O bonds, aliphatic C–H bonds, and triazole groups were broken, showcasing excellent radiation stability for doses up to 2 MGy. Our results demonstrate the importance of chemistry in ZrP coordination polymers maintaining not only selective separation properties, but also maintaining radiation stability as well.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P21.1 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 10 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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