Coordination-Induced Magnetism Strategy for Highly Selective and Efficient Uranium Separation
发布时间：2025-09-30
点击次数：
- 影响因子：
- 14.1
- 发表刊物：
- Advanced Science
- 摘要：
- Abstract Highly efficient separation of dispersed uranium is important for the sustainable development of nuclear industry, and adsorption is the most recognized approach. However, there are many coexisting interfering metal ions that compete with uranyl ion for the chelating ligands in the adsorbents and lead to low separation selectivity and efficiency. Herein, a coordination-induced magnetism strategy is presented for the separation of uranium based on the conversion of diamagnetic cyanoferrocene (Fc-CN) nanocrystals to uranium-containing magnetic recoverable ferromagnetic aggregates. Different from previous adsorption strategies, this strategy combines the mechanisms of photocatalytic uranium enrichment and chemical uranium adsorption. Under light irradiation, electron of Fe(II) in Fc-CN is excited and transfers to uranyl ion via the cyano group to form tight coordination bond between N atom in cyano group and uranium. This phenomenon is unique for uranyl ion, and thus, a high uranium removal rate of 97.98% is achieved in simulated nuclear wastewater with the presence of tremendous interfering ions, proving its highly selective and efficient uranium separation performance. The ability to form highly stable magnetic aggregates via photoinduced interaction between Fc-CN and uranium enriches the understanding on the chemical properties of Fc-CN and uranium.
- 合写作者：
- Shilei Zhao, Tiantian Feng, Jiacheng Zhang, Meng Cao, Lijuan Feng, Yue Ma, Tao Liu, Yihui Yuan, Ning Wang
- 论文类型：
- 期刊论文
- 学科门类：
- 工学
- 是否译文：
- 否
- 发表时间：
- 2024-01-01
- 收录刊物：
- SCI