气候变化领域集成服务门户(CCPortal): Extremely stable amidoxime functionalized covalent organic frameworks for uranium extraction from seawater with high efficiency and selectivity

CCPortal

DOI	10.1016/j.scib.2021.05.012
	Extremely stable amidoxime functionalized covalent organic frameworks for uranium extraction from seawater with high efficiency and selectivity
	Cheng G.; Zhang A.; Zhao Z.; Chai Z.; Hu B.; Han B.; Ai Y.; Wang X.
发表日期	2021
ISSN	20959273
英文摘要	Uranium extraction from seawater is of strategic significance for nuclear power generation. Amidoxime-based functional adsorbents play indispensable roles in the recovery of seawater uranium with high efficiency. Nevertheless, balancing the adsorption capacity and selectivity is challenging in the presence of complicated interfering ions especially vanadium. Herein, a polyarylether-based covalent organic framework functionalized with open-chain amidoxime (COF-HHTF-AO) was synthesized with remarkable chemical stability and excellent crystallinity. Impressively, the adsorption capacity of COF-HHTF-AO towards uranium in natural seawater reached up to 5.12 mg/g, which is 1.61 times higher than that for vanadium. Detailed computational calculations revealed that the higher selectivity for uranium over vanadium originated from the specific bonding nature and coordination pattern with amidoxime. Combining enhanced adsorption capacity, excellent selectivity and ultrahigh stability, COF-HHTF-AO serves as a promising adsorbent for uranium extraction from the natural seawater. © 2021 Science China Press
关键词	Amidoxime Covalent organic frameworks Extraction High selectivity Uranium
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207371
作者单位	Ministry of Education Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China; The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Normal University, Wuhu, 241000, China; School of Life Science, Shaoxing University, Shaoxing, 312000, China
推荐引用方式 GB/T 7714	Cheng G.,Zhang A.,Zhao Z.,et al. Extremely stable amidoxime functionalized covalent organic frameworks for uranium extraction from seawater with high efficiency and selectivity[J],2021.
APA	Cheng G..,Zhang A..,Zhao Z..,Chai Z..,Hu B..,...&Wang X..(2021).Extremely stable amidoxime functionalized covalent organic frameworks for uranium extraction from seawater with high efficiency and selectivity.Science Bulletin.
MLA	Cheng G.,et al."Extremely stable amidoxime functionalized covalent organic frameworks for uranium extraction from seawater with high efficiency and selectivity".Science Bulletin (2021).