超选择性的铼酸根/高锝酸根离子的配位框架。
Ultra-highly selective trapping of perrhenate/pertechnetate by a flexible cationic coordination framework.
机构信息
College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, MOE Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Tianjin Normal University, Tianjin 300387, China.
出版信息
Chem Commun (Camb). 2019 Feb 5;55(12):1841-1844. doi: 10.1039/c8cc09364d.
The selective binding and trapping of perrhenate/pertechnetate is of great interest in the contamination remediation of nuclear waste. Herein, we report a cationic metal-organic framework (TJNU-216, TJNU = Tianjin Normal University), with ultra-high selectivity in trapping perrhenate/pertechnetate in the presence of a large excess of SO42- (20 000 times) or NO3- (300 times), and the highest exchange capacity of 417 mg g-1 (1 mol mol-1). The exchange mechanism can be confirmed by the crystal structure of TJNU-216(Re) via single-crystal-to-single-crystal transformation.
选择性结合和捕获高锝酸根/锝酸盐在核废料污染修复中具有重要意义。在此，我们报道了一种具有超高选择性的阳离子金属-有机骨架（TJNU-216，TJNU = 天津师范大学），在存在大量硫酸根（20000 倍）或硝酸根（300 倍）的情况下，可超高效捕获高锝酸根/锝酸盐，其交换容量高达 417 mg g-1（1 mol mol-1）。通过单晶到单晶的转变，可通过 TJNU-216（Re）的晶体结构证实其交换机制。
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