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 and Shuao Wang ()
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Jie Li: Soochow University
Xing Dai: Soochow University
Lin Zhu: Soochow University
Chao Xu: Tsinghua University
Duo Zhang: Soochow University
Mark A. Silver: Soochow University
Peng Li: Northwestern University
Lanhua Chen: Soochow University
Yongzhong Li: Suzhou CNNC Huadong Radiation Co., Ltd
Douwen Zuo: CGN Dasheng Electron Accelerator Technology Co., Ltd
Hui Zhang: Chinese Academy of Sciences
Chengliang Xiao: Soochow University
Jing Chen: Tsinghua University
Juan Diwu: Soochow University
Omar K. Farha: Northwestern University
Thomas E. Albrecht-Schmitt: Florida State University
Zhifang Chai: Soochow University
Shuao Wang: Soochow University

Nature Communications, 2018, vol. 9, issue 1, 1-11

Abstract: 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.

Date: 2018
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DOI: 10.1038/s41467-018-05380-5

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