Designing functionalized task-specific ionic liquid is a promising way to alleviate the potential second pollution caused by the usage of tributyl phosphate in PUREX process. In this work, a new anion-functionalized ionic liquid, N,N,N-trimethyltetradecan-1-aminium dibutyl phosphate ([N₁₄₁₁₁][DBP]), was synthesized and applied in uranium extraction. Thanks to the negatively charged effect, [N₁₄₁₁₁][DBP] exhibits high efficiency in uranium separation, at optimized condition, the maximum of distribution ratio (concentration of ions in extractant to concentration of ions in aqueous solution) for UO₂²⁺ could reach 343.5. What’s more, the selectivity of [N₁₄₁₁₁][DBP] for UO₂²⁺ from transition metal ions was also examined in simulated nuclear industry effluent containing and UO₂²⁺ ions were separated and extracted efficiently. The advantage of extraction efficiency and selectivity of [N₁₄₁₁₁][DBP] compared with DBP highlight the superiority of anion-functionalized extractant.

设计功能化的任务特定离子液体是缓解 PUREX 工艺中使用磷酸三丁酯引起的潜在二次污染的一种有前途的方法。在这项工作中，合成了一种新的阴离子功能化离子液体 N,N,N-trimethyltetradecan-1-aminium dibutyl phosphate ([N ₁₄₁₁₁ ][DBP]) 并应用于铀提取。由于带负电荷的作用，[N ₁₄₁₁₁ ][DBP]在铀分离中表现出很高的效率，在优化条件下，UO ₂ ²⁺的最大分配比（萃取剂中离子浓度与水溶液中离子浓度）可以达到 343.5。此外，[N ₁₄₁₁₁ ][DBP] 对 UO ₂ ²⁺的选择性还在模拟核工业流出物中检测了来自过渡金属离子的₂和 UO ₂ ²⁺离子，并有效地分离和提取。[N ₁₄₁₁₁ ][DBP] 与 DBP 相比在萃取效率和选择性方面的优势突出了阴离子功能化萃取剂的优越性。