Achieving ultrahigh uranium/vanadium selectivity of poly(amidoxime) <i>via</i> coupling MXene-enabled strong intermolecular interaction and separated photothermal interface

Ye, Hao; Wu, Ming-Bang; Ye, Qi-Hui; Wen, Rou-Ming; Hu, Zhang-Ting; Yao, Juming; Zhang, Chao

doi:10.1039/d3mh02196c

Mater. Horiz.

2024

DOI: 10.1039/d3mh02196c

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Achieving ultrahigh uranium/vanadium selectivity of poly(amidoxime) via coupling MXene-enabled strong intermolecular interaction and separated photothermal interface

Hao Ye,

Ming-Bang Wu,

Qi-Hui Ye

et al.

Abstract: Poly(amidoxime) (PAO) has been recognized as the most potential candidate to extract uranium from seawater, owing to its merits of outstanding uranium affinity, low cost, and large-scale production. Despite remarkable...

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2024

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Cited by 3 publications

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In Situ Synthesis of Polyamidoxime Chains Inside the Negative‐Charged Confining Fields for Efficient Adsorption of Uranyl Ions

Cao,

Cui,

Zhang

et al. 2024

Adv Funct Materials

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Polyamidoxime (PAO) and its derivatives are widely regarded as promising adsorbents for uranium extraction from seawater. However, their close‐packed structure encapsulates a large number of adsorption sites and slows down the transfer rate of uranyl ions, resulting in a slight uranium adsorption capacity. Herein, PAO polymer chains are synthesized through the molecular coordination template method in the carboxylate covalent organic framework (COF) to obtain a PAO‐inserted COF adsorbent with open ion transport channels. After removing the protons, the COO− groups form in situ electric fields inside the 0.7 nm COF channel. This negatively‐charged framework reduces the electrostatic repulsion among uranium cations, thus realizing ultrahigh utilization of adsorption sites of PAO polymer (81.0%), far exceeding that of classical amidoxime‐based adsorbents (33.7%). After 10 days of contact with natural seawater, COF‐PAO achieved an average capacity of ≈12.26 mg‐U per g for uranium in Bohai (China), satisfying the uranium extraction standard (6.0 mg g−1). This work enumerates a method for the control of the spatial environment of polymer chains, and provides guidance for the design of subsequent high‐efficiency adsorbents.

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In Situ Synthesis of Polyamidoxime Chains Inside the Negative‐Charged Confining Fields for Efficient Adsorption of Uranyl Ions

Cao,

Cui,

Zhang

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

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Advanced MXene-based materials for efficient extraction of uranium from seawater and wastewater

Zhu,

Wang,

Liu

et al. 2024

Science of The Total Environment

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Advances and challenges in MXene-based electrocatalysts: unlocking the potential for sustainable energy conversion

He,

Zhuang,

Fan

et al. 2024

Mater. Horiz.

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Achieving ultrahigh uranium/vanadium selectivity of poly(amidoxime) via coupling MXene-enabled strong intermolecular interaction and separated photothermal interface

Abstract: Poly(amidoxime) (PAO) has been recognized as the most potential candidate to extract uranium from seawater, owing to its merits of outstanding uranium affinity, low cost, and large-scale production. Despite remarkable...

Cited by 3 publications

References 54 publications

In Situ Synthesis of Polyamidoxime Chains Inside the Negative‐Charged Confining Fields for Efficient Adsorption of Uranyl Ions

In Situ Synthesis of Polyamidoxime Chains Inside the Negative‐Charged Confining Fields for Efficient Adsorption of Uranyl Ions

Advanced MXene-based materials for efficient extraction of uranium from seawater and wastewater

Advances and challenges in MXene-based electrocatalysts: unlocking the potential for sustainable energy conversion

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