坦宁辅助的界面聚合向COF膜进行,以实现高效的染料分离
Weishan Deng1, Zezhen Zhang1, Lulu Liu1
1School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 China polym_wl@whut.edu.cn.
RSC advances
|May 21, 2024
概括
这项研究开发了使用共价有机框架 (COF) 和酸 (TA) 进行高效净化水的先进膜. 修改后的膜显示出出色的染料分离和稳定性,为清洁水获取提供了一个有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 膜分离对于清洁水的生产至关重要.
- 共价有机框架 (COF) 为先进的膜提供可调节的特性.
- 聚硫 (PES) 超膜需要修改以提高性能.
研究的目的:
- 开发经过修改的聚硫 (PES) 超膜,使用酸 (TA) 辅助的共价有机框架 (COF).
- 为了增强膜的水友性和控制COF孔径,以改善分离.
- 评估改造膜在染料分离和水净化中的性能.
主要方法:
- 使用界面聚合和共同沉积来修改PES膜.
- 醇被用作油相单体,以防止介面聚合过程中的基质腐蚀.
- 酸 (TA) 的共同沉积引入了水友群,并促进了迈克尔添加反应,以调节毛孔大小.
主要成果:
- 优化的膜表现出高透流量122.03 L m-2 h-1 bar-1.
- 膜实现了多种染料的98%以上的保留率 (Mw:300-1300 gmol-1).
- 经过多次过后,修改后的膜表现出异常稳定性和高保留率 (>98%) 即使多次过.
结论:
- TA辅助的COF修改显著提高了膜的水友性和分离性能.
- 开发的膜显示了对高效的染料分离和水净化应用的有希望的潜力.
- 膜的简单冲洗方法表明其强度和长期适用性.
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