Anion-adaptive crystalline cationic material for 99TcO4- trapping
Journal Article
·
· Nature Communications
- Chinese Academy of Sciences (CAS), Beijing (China)
- Tsinghua Univ., Beijing (China)
- Chinese Academy of Sciences (CAS), Beijing (China); Chinese Academy of Sciences, Ningbo, Zhejiang (China)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Efficient anion recognition is of great significance for radioactive 99TcO4- decontamination, but it remains a challenge for traditional sorbents. Herein, we put forward a tactic using soft crystalline cationic material with anion-adaptive dynamics for 99TcO4- sequestration. A cucurbit[8]uril-based supramolecular metal-organic material is produced through a multi-component assembly strategy and used as a sorbent for effective trapping of TcO4-. Excellent separation of TcO4-/ReO4- is demonstrated by fast removal kinetics, good sorption capacity and high distribution coefficient. Remarkably, the most superior selectivity among metal-organic materials reported so far, together with good hydrolytic stability, indicates potential for efficient TcO4- removal. The structure incorporating ReO4- reveals that the supramolecular framework undergoes adaptive reconstruction facilitating the effective accommodation of TcO4-/ReO4-. The results highlight opportunities for development of soft anion-adaptive sorbents for highly selective anion decontamination.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Actinide Science & Technology (CAST); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division
- Grant/Contract Number:
- AC02-05CH11231; SC0016568
- OSTI ID:
- 1546668
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 10; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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