Flexible Units in Covalent Organic Frameworks Promote Photocatalytic Uranium Extraction from Wastewater DOI
Xiangke Wang, Mengjie Hao, Ming Lei

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

Abstract Covalent organic frameworks (COFs) are increasingly being utilized in photocatalysis due to their programmable band gaps and pore geometries. Flexible COFs currently of interest for selective sorption, though use has received little attention date. Herein, we propose a strategy modulating the flexible units facilitate efficient charge carrier separation transfer during photocatalysis. Rotational freedom linkers our led controllable local curvature, thereby optimizing optoelectronic properties boosting photocatalytic activity. One developed (COF-3) showed excellent performance uranium removal from contaminated groundwater tap water. Mechanistic studies revealed that COF-3 photocatalytically generated H2O2 under visible light irradiation water, which transformed UO22+ solid (UO2)O2·2H2O through redox pathway. The results demonstrate an effective design towards COF photocatalysts water potentially many other applications.

Language: Английский

Novel amidoxime-functionalized covalent organic frameworks synergistically promote UO22+ removal via photocatalytic reduction and adsorption DOI
Yu Liu,

Qiuhui Deng,

Xi Yao

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131461 - 131461

Published: Jan. 1, 2025

Language: Английский

Citations

5
Acriflavine-based ionic covalent organic frameworks for adsorption-assisted photocatalytic reduction of hexavalent chromium DOI

Yunjie Zhou,

Jing-Qi Liu,

Dongxiao Cao

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162634 - 162634

Published: April 1, 2025

Language: Английский

Citations

0
Preparation of acid-modified waste mask-based activated carbon grafted chitosan composites and their efficient removal of uranyl ions DOI

Xiaoxia He,

Chao Zhou,

Yifan Meng

et al.

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 310, P. 143431 - 143431

Published: April 23, 2025

Language: Английский

Citations

0
Flexible Units in Covalent Organic Frameworks Promote Photocatalytic Uranium Extraction from Wastewater DOI
Xiangke Wang, Mengjie Hao, Ming Lei

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 29, 2025

Abstract Covalent organic frameworks (COFs) are increasingly being utilized in photocatalysis due to their programmable band gaps and pore geometries. Flexible COFs currently of interest for selective sorption, though use has received little attention date. Herein, we propose a strategy modulating the flexible units facilitate efficient charge carrier separation transfer during photocatalysis. Rotational freedom linkers our led controllable local curvature, thereby optimizing optoelectronic properties boosting photocatalytic activity. One developed (COF-3) showed excellent performance uranium removal from contaminated groundwater tap water. Mechanistic studies revealed that COF-3 photocatalytically generated H2O2 under visible light irradiation water, which transformed UO22+ solid (UO2)O2·2H2O through redox pathway. The results demonstrate an effective design towards COF photocatalysts water potentially many other applications.

Language: Английский

Citations

0