高透性金属有机框架MOF-303海水淡化膜
Shenzhen Cong1, Ye Yuan1, Jixiao Wang1
1Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China.
Journal of the American Chemical Society
|November 23, 2021
概括
新的基金属有机框架 (MOF) 膜为软化水的应用提供了卓越的水透性和离子排斥. MOF-303膜表现出高性能和稳定性,优于现有技术.
科学领域:
- 材料科学
- 化学工程
- 环境科学
背景情况:
- 先进的膜材料对于有效的水处理和净化至关重要.
- 金属有机框架 (MOF) 具有不同的化学和拓性质,使其成为膜应用的前景.
- 现有的膜往往在平衡水的透性和离子排斥方面面临限制.
研究的目的:
- 开发和评估用于软化水的连续MOF-303膜.
- 研究MOF-303膜的离子排斥和水透性能.
- 评估MOF-303膜在实际应用中的稳定性和成本效益.
主要方法:
- 使用现场水热合成在α-Al2O3基板上制造连续MOF-303膜.
- 膜性能的表征,包括双价离子排斥 (MgCl2,Na2SO4) 和水透性.
- 膜稳定性和生产成本的评估.
主要成果:
- 通过尺寸选和静电排斥,MOF-303膜实现了对双价离子 (93.5% MgCl2,96.0% Na2SO4) 的高排斥率.
- 记录了3.0L·m−2·h−1·bar−1·μm的空前的水透性,超过了传统的膜.
- 这些膜表现出良好的稳定性和低成本生产的潜力.
结论:
- MOF-303膜具有优异的水软化性能,具有高的离子选择性和透性.
- 所取得的性能明显超过了MOF,焦岩和商业聚合物膜的性能.
- MOF-303是下一代水处理膜技术的强大候选者.
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