Anion-adaptive crystalline cationic material for 99TcO4- trapping

被引：117

作者：

Mei, Lei ^{[1
]}

Li, Fei-ze ^{[1
]}

Lan, Jian-hui ^{[1
]}

Wang, Cong-zhi ^{[1
]}

Xu, Chao ^{[2
]}

Deng, Hao ^{[1
]}

Wu, Qun-yan ^{[1
]}

Hu, Kong-qiu ^{[1
]}

Wang, Lin ^{[1
]}

Chai, Zhi-fang ^{[1
,3
]}

Chen, Jing ^{[2
]}

Gibson, John K. ^{[4
]}

Shi, Wei-qun ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Lab Nucl Energy Chem, Beijing 100049, Peoples R China

[2] Tsinghua Univ, Inst Nucl & New Energy Technol, Nucl Chem & Chem Engn Div, Beijing 100084, Peoples R China

[3] Chinese Acad Sci, Ningbo Inst Ind Technol, Engn Lab Nucl Energy Mat, Ningbo 315201, Zhejiang, Peoples R China

[4] Lawrence Berkeley Natl Lab, Chem Sci Div, Berkeley, CA 94720 USA

来源：

NATURE COMMUNICATIONS | 2019年 / 10卷 / 1期

基金：

中国国家自然科学基金; 国家自然科学基金重大项目;

关键词：

METAL-ORGANIC FRAMEWORK; HIGH-ENERGY WATER; ELECTRON-DENSITY; AQUEOUS-MEDIA; HIGH-AFFINITY; CHEMISTRY; REMOVAL; RECOGNITION; PERTECHNETATE; CUCURBITURIL;

D O I：

10.1038/s41467-019-09504-3

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Efficient anion recognition is of great significance for radioactive (TcO4-)-Tc-99 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 (TcO4)-Tc-99- 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.

引用

页数：12

共 69 条

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