99TcO4 remediation by a cationic polymeric network

Jie Li, Xing Dai, Lin Zhu, Chao Xu, Duo Zhang, Mark A. Silver, Peng Li, Lanhua Chen, Yongzhong Li, Douwen Zuo, Hui Zhang, Chengliang Xiao*, Jing Chen, Juan Diwu, Omar K. Farha, Thomas E. Albrecht-Schmitt, Zhifang Chai, Shuao Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

78 Scopus citations

Abstract

Direct removal of 99TcO4 from the highly acidic solution of used nuclear fuel is highly beneficial for the recovery of uranium and plutonium and more importantly aids in the elimination of 99Tc discharge into the environment. However, this task represents a huge challenge given the combined extreme conditions of super acidity, high ionic strength, and strong radiation field. Here we overcome this challenge using a cationic polymeric network with significant TcO4 uptake capabilities in four aspects: the fastest sorption kinetics, the highest sorption capacity, the most promising uptake performance from highly acidic solutions, and excellent radiation-resistance and hydrolytic stability among all anion sorbent materials reported. In addition, this material is fully recyclable for multiple sorption/desorption trials, making it extremely attractive for waste partitioning and emergency remediation. The excellent TcO4 uptake capability is elucidated by X-ray absorption spectroscopy, solid-state NMR measurement, and density functional theory analysis on anion coordination and bonding.

Original languageEnglish (US)
Article number3007
JournalNature communications
Volume9
Issue number1
DOIs
StatePublished - Dec 1 2018

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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