Issue 6, 2021

Sulfonated perylene-based conjugated microporous polymer as a high-performance adsorbent for photo-enhanced uranium extraction from seawater

Abstract

Uranium extraction from seawater employing chemical adsorbents is considered to be a promising strategy to conquer the scarcity of uranium resources. Regrettably, shortcomings of poor adsorption performance and saturated adsorption hinder the development of adsorption strategies to extract uranium from natural seawater where the environment is complicated. Herein, a sulfonated perylene-based conjugated microporous polymer adsorbent (PyB-SO3H) is prepared. The excellent photocatalytic activity of PyB-SO3H ensures the effective generation of active oxygen species (˙O2 and 1O2), which have high antibacterial activity. Moreover, it also promotes photoelectrons to reduce the adsorbed hexavalent uranium to insoluble tetravalent uranium, and facilitate electrostatic attraction of the photogenerated holes to the negative [UO2(CO3)3]4−, thus greatly enhancing the uranium extraction capacity. Owing to this photo-enhanced synergistic effect, the uranium extraction capacity of PyB-SO3H in 500 ppm uranium(VI)-spiked seawater reaches 1.989 g g−1, with a nearly 90% extraction efficiency. This research provides a unique perspective for the development of high-efficiency adsorbents for uranium extraction from seawater.

Graphical abstract: Sulfonated perylene-based conjugated microporous polymer as a high-performance adsorbent for photo-enhanced uranium extraction from seawater

Supplementary files

Article information

Article type
Paper
Submitted
02 12 2020
Accepted
06 1 2021
First published
09 1 2021

Polym. Chem., 2021,12, 867-875

Sulfonated perylene-based conjugated microporous polymer as a high-performance adsorbent for photo-enhanced uranium extraction from seawater

F. Yu, F. Song, R. Wang, M. Xu and F. Luo, Polym. Chem., 2021, 12, 867 DOI: 10.1039/D0PY01656J

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