基于蛋白质的纳米过膜具有亚纳米孔,通过像粉样的聚合方式进行工程
Quanji Zhu1, Yujun Zhang2, Jian Zhao3,4
1Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong, 266100, P.R. China.
Angewandte Chemie (International ed. in English)
|December 29, 2025
概括
研究人员创建了先进的蛋白质膜,具有精确控制的亚纳米孔,以有效地分离离子. 这些仿生膜具有很高的选择性和稳定性,为净水和环境修复提供了一种新的方法.
科学领域:
- 材料科学 材料科学 材料科学
- 生物仿真工程 生物仿真工程
- 纳米技术 纳米技术
背景情况:
- 生物膜蛋白在通过亚纳米道的选择性分子运输方面表现出色.
- 人工蛋白质膜在精确的亚纳米孔径控制方面扎,限制了选择性.
- 开发具有生物仿真精度的人造膜对于先进的分离技术至关重要.
研究的目的:
- 制造具有精确定义的亚纳米孔的蛋白质纳米过膜.
- 通过交叉连接来提高离子选性能和表面性能.
- 为了证明净水,离子分离和环境修复的潜力.
主要方法:
- 在空气/水界面使用硫化-硫化交换反应形成蛋白质膜.
- 随后与聚烯进行交叉连接,以减少孔径并改变表面电荷.
- 使用MgCl2排斥,模拟盐水中的Mg2+/Li+选择性和稳定性测试进行性能评估.
主要成果:
- 制造膜的初始孔径为0.62-0.81 nm,在聚烯交叉连接后减少到~0.4 nm.
- 实现了98.24%的MgCl2排斥和88.65Mg2+/Li+选择性,超过了许多聚合物膜的性能.
- 证明了出色的化学稳定性,抗污染性能,以及在分离各种污染物的多功能性.
结论:
- 开发的蛋白质膜提供精确的亚纳米孔控,模仿生物通道.
- 聚烯交叉连接显著提高了离子选择性和膜稳定性.
- 这种仿生方法为下一代分离和修复技术带来了范式的转变.
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