Issue 30, 2020

New insights into the radiolytic stability of metal(iv) phosphonate hybrid adsorbent materials

Abstract

Stable metal(IV) phosphonate hybrids are a promising class of materials for the critical issue of nuclear waste cleanup. However, to be of practical use, adsorbent materials must demonstrate radiolytic stability and this property remains poorly understood. Therefore, the radiolytic stabilities of post-functionalised mesoporous zirconium titanate and zirconium phosphonate coordination polymers were compared. For the first time, solid-state 31P MAS-NMR was used to probe the radiolytic degradation of metal(IV) phosphonates and provide mechanistic insight. Polyphosphonate-functionalized hybrids were more stable than monophosphonate hybrids, as the monophosphonate readily detached from the oxide surface. The zirconium phosphonate coordination polymer (Zr-ATMP) demonstrated the greatest radiolytic stability, attributed to its high ligand loading and intimately mixed structure. Zr-ATMP maintained highly efficient sorption from strongly acidic solutions even after receiving doses of gamma radiation up to 2.9 MGy.

Graphical abstract: New insights into the radiolytic stability of metal(iv) phosphonate hybrid adsorbent materials

Supplementary files

Article information

Article type
Communication
Submitted
05 Mai 2020
Accepted
10 Jul 2020
First published
11 Jul 2020

Phys. Chem. Chem. Phys., 2020,22, 17027-17032

New insights into the radiolytic stability of metal(IV) phosphonate hybrid adsorbent materials

V. Luca and J. Veliscek-Carolan, Phys. Chem. Chem. Phys., 2020, 22, 17027 DOI: 10.1039/D0CP02414G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements