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Regenerable and stable sp² carbon-conjugated covalent organic frameworks for selective detection and extraction of uranium

Chemistry

Regenerable and stable sp² carbon-conjugated covalent organic frameworks for selective detection and extraction of uranium

W. Cui, C. Zhang, et al.

Discover the groundbreaking work of an innovative sp² carbon-conjugated fluorescent covalent organic framework (COF) developed by authors from Nanchang University and the University of Waterloo. This COF, known as TFPT-BTAN-AO, showcases remarkable stability and an amazing capacity to adsorb UO₂²⁺, making it a game-changer for real-time monitoring and extraction of radionuclides.

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Playback language: English
Abstract
This paper reports the synthesis of a sp² carbon-conjugated fluorescent covalent organic framework (COF) named TFPT-BTAN-AO, exhibiting excellent chemical, thermal, and radiation stability. TFPT-BTAN-AO demonstrates a high UO₂²⁺ adsorption capacity (427 mg g⁻¹) due to abundant uranium-binding groups within its open 1D channels. It also features a rapid response time (2 s) and a low detection limit (6.7 nM UO₂²⁺), making it suitable for real-time UO₂²⁺ monitoring and extraction. The study highlights the potential of fluorescent COFs for radionuclide detection and extraction, with the strategy applicable to other contaminants through ligand design.
Publisher
Nature Communications
Published On
Jan 23, 2020
Authors
Wei-Rong Cui, Cheng-Rong Zhang, Wei Jiang, Fang-Fang Li, Ru-Ping Liang, Juewen Liu, Jian-Ding Qiu
Tags
fluorescent COF
uranium detection
chemical stability
adsorption capacity
real-time monitoring
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