Innovative Conversion Strategy for Wastewater with One‐Pot Uranium Extraction and Valuable Chemical Production by a Smart COF Photocatalyst

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(29)

Published: March 15, 2024

Abstract Environmental protection and resource reclamation make the extraction of uranium from uranium‐containing wastewater be a key role in nuclear chemistry industry. Although previous studies have revealed several effective methods materials for such use, however, few are concerned about discharge issues. In fact, direct treated into environment is still not green way. Here, an innovative conversion approach shown, which can simultaneously achieve to valuable chemical. This concept implemented by azobenzene‐pendent covalent organic framework, showing smart trans ‐to‐ cis photoresponsive properties both space electronic structure consequently, largely enhanced efficiency under UV irradiation, relative visible light irradiation. real wastewater, material found give selective 100% H 2 O generation (1872.3 µmol g −1 h ). The mechanism due unique photocatalysis coupling between reduction reaction (URR), aiming at recovery or removal, water oxidation (WOR), targeting chemical .

Language: Английский

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Ion pair sites for efficient electrochemical extraction of uranium in real nuclear wastewater

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: May 16, 2024

Abstract Electrochemical uranium extraction from nuclear wastewater represents an emerging strategy for recycling resources. However, in fuel production which generates the majority of uranium-containing wastewater, fluoride ion (F − ) co-exists with uranyl (UO 2 2+ ), resulting complex species UO F x and thus decreasing efficiency. Herein, we construct Ti δ+ -PO 4 3− pair sites Ti(OH)PO efficient electrochemical production. These selectively bind through combined Ti-F multiple O-U-O bonds. In extraction, undergo a crystalline transition U 3 O 7 to K 5 . real is electrochemically extracted high efficiency 99.6% finally purified as oxide powder, corresponding capacity 6829 mg g −1 without saturation. This work paves way

Language: Английский

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A 2D Acridine‐Based Covalent Organic Framework for Selective Detection and Efficient Extraction of Gold from Complex Aqueous‐Based Matrices

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(24)

Published: April 12, 2024

Developing candidate materials which possess the ability of both selective detection and efficient capture precious metal gold is highly desirable for environment economy. However, most reported only focus on single function, seriously restricts their practical application as probes or adsorbents. Herein, a two dimensional (2D) acridine-based covalent organic framework (TpDa-COF) prepared via linkage imine bonds adsorption. The synthesized COF can achieve fluorescence colorimetric dual sensing Au

Language: Английский

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All‐in‐One: Photo‐Responsive Lanthanide‐Organic Framework for Simultaneous Sensing, Adsorption, and Photocatalytic Reduction of Uranium

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: May 7, 2024

Abstract The selective removal and immobilization of uranyl ions from aqueous solutions is essential for the sustainable development nuclear energy. Herein, a robust lanthanide‐organic framework material ( IHEP‐24 ) developed simultaneous fluorescence sensing, adsorption, photocatalytic reduction uranium, integrating three different functions in one material. confined space formed by coordination assembly viologen derivative ligands metal‐oxygen clusters can act as precise recognition sites uranyl, allowing to efficiently detect capture ions. In addition, presence viologen‐based radical ligand enables further adsorbed amorphous UO 2 . mechanisms adsorption photocatalysis are revealed batch experiments, photoelectrochemical characterizations, theoretical calculations. This study provides reference construction multi‐functional MOF materials also support deep radionuclides solution.

Language: Английский

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Effective separation and immobilization of uranium(VI) from wastewater using amino and carboxyl groups functionalized covalent organic frameworks

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 338, P. 126501 - 126501

Published: Jan. 26, 2024

Language: Английский

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Recent progress on covalent organic frameworks and their composites as electrode materials for supercapacitors

Advanced Composites and Hybrid Materials, Journal Year: 2024, Volume and Issue: 8(1)

Published: Dec. 26, 2024

Language: Английский

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Secondary metal ion-induced electrochemical reduction of U(VI) to U(IV) solids

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Sept. 4, 2024

Language: Английский

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Modified side-chain COFs construct built-in electric fields with low exciton binding energy for photo-reduced uranium

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149339 - 149339

Published: Feb. 5, 2024

Language: Английский

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Interface coupling induced built-in electric fields accelerate electro-assisted uranium extraction over Co3O4@FeOx nanosheet arrays

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 353, P. 124052 - 124052

Published: April 24, 2024

Language: Английский

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Combining machine learning and metal–organic frameworks research: Novel modeling, performance prediction, and materials discovery

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 514, P. 215888 - 215888

Published: May 8, 2024

Language: Английский

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