深度优捷性溶剂-水界面聚合:一个可扩展的途径,可定制的共价有机框架膜
Wei Gao1, Shaofei Wang2, Jianghua Li1
1College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, P. R. China.
ACS nano
|March 16, 2026
概括
研究人员开发了一种新的深度环氧溶剂 (DES) -水系统,用于高性能共价有机框架 (COF) 膜的可扩展合成. 这种方法提高了关键分离的水透性和选择性.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 膜科学 膜科学 膜科学
背景情况:
- 合成大面积,有序的共价有机框架 (COF) 膜具有高流量和选择性是具有挑战性的.
- 现有的方法在扩展性和控制膜性质方面存在困难.
研究的目的:
- 开发一个可扩展的平台,用于制造高性能COF膜.
- 为了研究深层浸泡溶剂 (DES) 在控制COF膜形成中的作用.
主要方法:
- 采用了深度环氧化溶剂 (DES) - 水系统来抑制马兰戈尼效应并量身定制接口特性.
- 采用"双边约束"策略,使用DES粘度和结合来控制单体扩散.
- 调整了DES的布伦斯特德酸度,以调节核化和反应动力学,以实现缓慢的多重凝结.
主要成果:
- 成功制造出独立的,结晶的COF膜,可扩展的生产长度高达600厘米2.
- 实现了具有周期性1D开放多孔结构的膜.
- 对于抗生素和染料分离的高选择性被证明具有前所未有的水透率 (307.5 L m-2 h-1 bar-1).
结论:
- 该DES-水平台可实现可扩展,可控合成先进的COF膜.
- 开发的膜为分离应用提供了卓越的性能.
- 这项工作推进了界面聚合,以生产强大的晶体膜.
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