Issue 21, 2022

Atomic controllable anchoring of uranium into zirconate pyrochlore with ultrahigh loading capacity

Abstract

Efficient immobilization of actinide wastes is challenging in the nuclear energy industry. Here, we reported that 100% substitution of Zr4+ by U6+ in a La2Zr2O7 matrix has been achieved for the first time by the molten salt (MS) method. Importantly, we observed that uranium can be precisely anchored into Zr or La sites of the La2Zr2O7 matrix, as confirmed by X-ray diffraction, Raman, and X-ray absorption spectra. This work will guide the construction of site-controlled and high-capacity actinide-immobilized pyrochlore materials and could be extended to other perovskite materials.

Graphical abstract: Atomic controllable anchoring of uranium into zirconate pyrochlore with ultrahigh loading capacity

Supplementary files

Article information

Article type
Communication
Submitted
28 yan 2022
Accepted
14 fev 2022
First published
14 fev 2022

Chem. Commun., 2022,58, 3469-3472

Atomic controllable anchoring of uranium into zirconate pyrochlore with ultrahigh loading capacity

J. Sun, J. Zhou, L. Li, Z. Hu, T. Chan, T. Vitova, S. Song, R. Liu, C. Jing, H. Yu, M. Zhang, J. Rothe, J. Wang and L. Zhang, Chem. Commun., 2022, 58, 3469 DOI: 10.1039/D2CC00576J

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