通过热毛细管作用调节的缩聚乙胺纳米过膜,以有效分离和
Lishuang Gui1, Shuai Wang1, Liwei Chen2
1State key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, Sun Yat-sen University, Guangzhou 510006, China.
Water research
|August 21, 2025
概括
通过增强Mg2+/Li+分离,具有状结构的新型纳米过膜显著改善了 (Li) 的提取. 这些膜具有更高的透性和选择性,对能源市场至关重要.
科学领域:
- 材料科学
- 化学工程
- 环境科学
背景情况:
- 从盐水中提取 (Li) 对能源市场至关重要.
- 盐水中的离子 (Mg2+) 会使分离复杂化.
- 传统的纳米过 (NF) 膜面临透和盐排斥的权衡.
研究的目的:
- 为高效的Mg2+/Li+分离开发先进的NF膜.
- 克服传统NF膜在盐水处理中的局限性.
主要方法:
- 通过温度梯度辅助的界面聚合制造具有状结构的NF膜.
- 使用热毛囊效应和残留水膜对表面形态进行控制.
- 对分离性能,透性和选择性的评估.
主要成果:
- 优化膜的透气量增加了三倍 (17.6 L·m-2·h-1·bar-1).
- 获得高Mg2+排斥 (97. 6%) 和Mg2+/ Li+选择性 (SLi+/ Mg2+=32. 2).
- 证明了卓越的长期运行和储存稳定性.
结论:
- 开发的状结构的NF膜提供了更高的Mg2+/Li+分离效率.
- 这些膜为提取盐水中的提供了有前途的可扩展解决方案.
- 优点包括生产方便和高分离性能,用于实际应用.
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