期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 323, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2021.111231
关键词
Metal-organic frameworks; Zeolitic imidazolate frameworks; Covalent modification; Uranium extraction
类别
资金
- Natural Science Foundation of Hainan Province [2019RC005]
- National Natural Science Foundation of China [22061014, 21761010]
- Haikou Science and Technology Project [2020-033]
- Hainan University startup fund [KYQD(ZR)1806]
The study presents the synthesis of ZIF-90-ABOA with excellent uranium adsorption performance, demonstrating the potential enrichment of uranium from seawater and providing possibilities for nuclear energy development.
Uranium is one of the main crude materials for nuclear reaction, but the total uranium content on land is far from meeting the long-term needs of nuclear energy for the human being. How to enrich uranium from seawater with high reserves but extremely low uranium concentration and a great quantity of competitive ions has become a key project. In this work, we report the synthesis of aminooxime functionalized ZIF-90 by grafting 4-aminobenzamidoxime, named ZIF-90-ABOA, which exhibits outstanding adsorption performance benefitting from the high chelating ability of amidoxime towards uranium. The maximum adsorption capacity of uranium is 353.4 mg g(-1) from aqueous solution, which is much higher than the original ZIF-90. Additionally, the adsorption capacity can reach 2.8 mg g(-1) in 7 days from natural seawater, proving the potential enrichment of uranium in real application.
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