Alginate-based supermacroporous hydrogels fabricated by cryo-polymerization for uranium extraction from seawater

Xu Zhang; Dagang Li; Chang Cui; Shusen Chen; Meng Ji; Weiwu Tang; Le Yang; Fengqi Zhang; Jinying Li; Dongxiang Zhang; Xiyan Xu

doi:10.1039/d3py00529a

Alginate-based supermacroporous hydrogels fabricated by cryo-polymerization for uranium extraction from seawater

Xu Zhang, Dagang Li, Chang Cui, Shusen Chen, Meng Ji, Weiwu Tang, Le Yang, Fengqi Zhang, Jinying Li, Dongxiang Zhang^*, Xiyan Xu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Uranium extraction from seawater (UES) has important strategic significance as it can provide a solution to alleviate the future shortage of uranium resources for nuclear power production. This work reports an alginate-based three-dimensional (3D) supermacroporous AO-PAM/Alg hydrogel fabricated by facile cryo-polymerization and two-step grafting modification for efficient UES. The supermacroporous and 3D interconnected pore structure of AO-PAM/Alg facilitates an increased contact flux of seawater and the diffusion rate of uranyl ions. It shows a maximum uranium adsorption capacity of 1375 mg g⁻¹ at room temperature (25 °C) and a pH of 6.0. In seawater, AO-PAM/Alg reaches adsorption equilibrium within 20 days, with a final adsorption capacity of 6.23 mg g⁻¹. AO-PAM/Alg also exhibits considerable reusability and adsorption selectivity. The current AO-PAM/Alg hydrogel holds great potential for practical UES. The current macroporous adsorbent preparation strategy can be further applied to other 3D supermacroporous adsorbent materials.

Original language	English
Pages (from-to)	2902-2915
Number of pages	14
Journal	Polymer Chemistry
Volume	14
Issue number	24
DOIs	https://doi.org/10.1039/d3py00529a
Publication status	Published - 24 May 2023

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title = "Alginate-based supermacroporous hydrogels fabricated by cryo-polymerization for uranium extraction from seawater",

abstract = "Uranium extraction from seawater (UES) has important strategic significance as it can provide a solution to alleviate the future shortage of uranium resources for nuclear power production. This work reports an alginate-based three-dimensional (3D) supermacroporous AO-PAM/Alg hydrogel fabricated by facile cryo-polymerization and two-step grafting modification for efficient UES. The supermacroporous and 3D interconnected pore structure of AO-PAM/Alg facilitates an increased contact flux of seawater and the diffusion rate of uranyl ions. It shows a maximum uranium adsorption capacity of 1375 mg g−1 at room temperature (25 °C) and a pH of 6.0. In seawater, AO-PAM/Alg reaches adsorption equilibrium within 20 days, with a final adsorption capacity of 6.23 mg g−1. AO-PAM/Alg also exhibits considerable reusability and adsorption selectivity. The current AO-PAM/Alg hydrogel holds great potential for practical UES. The current macroporous adsorbent preparation strategy can be further applied to other 3D supermacroporous adsorbent materials.",

author = "Xu Zhang and Dagang Li and Chang Cui and Shusen Chen and Meng Ji and Weiwu Tang and Le Yang and Fengqi Zhang and Jinying Li and Dongxiang Zhang and Xiyan Xu",

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year = "2023",

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doi = "10.1039/d3py00529a",

language = "English",

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T1 - Alginate-based supermacroporous hydrogels fabricated by cryo-polymerization for uranium extraction from seawater

AU - Zhang, Xu

AU - Li, Dagang

AU - Cui, Chang

AU - Chen, Shusen

AU - Ji, Meng

AU - Tang, Weiwu

AU - Yang, Le

AU - Zhang, Fengqi

AU - Li, Jinying

AU - Zhang, Dongxiang

AU - Xu, Xiyan

PY - 2023/5/24

Y1 - 2023/5/24

N2 - Uranium extraction from seawater (UES) has important strategic significance as it can provide a solution to alleviate the future shortage of uranium resources for nuclear power production. This work reports an alginate-based three-dimensional (3D) supermacroporous AO-PAM/Alg hydrogel fabricated by facile cryo-polymerization and two-step grafting modification for efficient UES. The supermacroporous and 3D interconnected pore structure of AO-PAM/Alg facilitates an increased contact flux of seawater and the diffusion rate of uranyl ions. It shows a maximum uranium adsorption capacity of 1375 mg g−1 at room temperature (25 °C) and a pH of 6.0. In seawater, AO-PAM/Alg reaches adsorption equilibrium within 20 days, with a final adsorption capacity of 6.23 mg g−1. AO-PAM/Alg also exhibits considerable reusability and adsorption selectivity. The current AO-PAM/Alg hydrogel holds great potential for practical UES. The current macroporous adsorbent preparation strategy can be further applied to other 3D supermacroporous adsorbent materials.

AB - Uranium extraction from seawater (UES) has important strategic significance as it can provide a solution to alleviate the future shortage of uranium resources for nuclear power production. This work reports an alginate-based three-dimensional (3D) supermacroporous AO-PAM/Alg hydrogel fabricated by facile cryo-polymerization and two-step grafting modification for efficient UES. The supermacroporous and 3D interconnected pore structure of AO-PAM/Alg facilitates an increased contact flux of seawater and the diffusion rate of uranyl ions. It shows a maximum uranium adsorption capacity of 1375 mg g−1 at room temperature (25 °C) and a pH of 6.0. In seawater, AO-PAM/Alg reaches adsorption equilibrium within 20 days, with a final adsorption capacity of 6.23 mg g−1. AO-PAM/Alg also exhibits considerable reusability and adsorption selectivity. The current AO-PAM/Alg hydrogel holds great potential for practical UES. The current macroporous adsorbent preparation strategy can be further applied to other 3D supermacroporous adsorbent materials.

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U2 - 10.1039/d3py00529a

DO - 10.1039/d3py00529a

M3 - Article

AN - SCOPUS:85161720037

SN - 1759-9954

VL - 14

SP - 2902

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JO - Polymer Chemistry

JF - Polymer Chemistry

IS - 24

ER -

Alginate-based supermacroporous hydrogels fabricated by cryo-polymerization for uranium extraction from seawater

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