Regenerable and stable sp carbon-conjugated covalent organic frameworks for selective detection and extraction of uranium.

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ID: 87273
2020
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Abstract
Uranium is a key element in the nuclear industry, but its unintended leakage has caused health and environmental concerns. Here we report a sp carbon-conjugated fluorescent covalent organic framework (COF) named TFPT-BTAN-AO with excellent chemical, thermal and radiation stability is synthesized by integrating triazine-based building blocks with amidoxime-substituted linkers. TFPT-BTAN-AO shows an exceptional UO adsorption capacity of 427 mg g attributable to the abundant selective uranium-binding groups on the highly accessible pore walls of open 1D channels. In addition, it has an ultra-fast response time (2 s) and an ultra-low detection limit of 6.7 nM UO suitable for on-site and real-time monitoring of UO, allowing not only extraction but also monitoring the quality of the extracted water. This study demonstrates great potential of fluorescent COFs for radionuclide detection and extraction. By rational designing target ligands, this strategy can be extended to the detection and extraction of other contaminants.
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cui2020regenerablenature Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Cui, Wei-Rong;Zhang, Cheng-Rong;Jiang, Wei;Li, Fang-Fang;Liang, Ru-Ping;Liu, Juewen;Qiu, Jian-Ding;
Journal Nature communications
Year 2020
DOI
10.1038/s41467-020-14289-x
URL
Keywords
Cytotoxicity molecular docking alpha-glucosidase benzohydroxamic acid chromium(iii)

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