Synthesis of core–shell magnetic nanocomposite bearing phosphonic acid ligand for uranium extraction from strong HNO3 solution

Jizhou Zhao,Peng Lu,Tengteng He,Qinghua Zhang,Jing Huang,Yan Liu,Xiaohong Zhao,Yun Wang,Zhirong Liu,Dingzhong Yuan

Chemical Engineering Journal（2023）

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摘要

•Novel core–shell magnetic nanocomposite bearing phosphonic acid ligand was developed.•The maximum adsorption capacity in 4 mol L−1 of HNO3 can reach up to 262.5 mg g−1.•Core-shell structure enhanced structural stability in strong HNO3 solution.•High selectivity for uranium in multi-component solution was obtained.•High free movement degree of phosphonic acid promoted U (VI) sorption efficiently.

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关键词

Magnetic nanocomposite,Uranium adsorption,Phosphonic acid ligand,Acid resistance,Core-shell structure

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