基于二维纳米网的双不对称的简斯膜,具有超扩散表面,用于高性能海水淡化
Ming Yang1, Ni Yao1, Xiaoxi Li1
1Innovation Center for Textile Science and Technology, College of Textiles, Donghua University, Shanghai 201620, China.
ACS nano
|November 19, 2024
概括
研究人员使用二维纳米网开发了先进的简斯膜,用于高效的海水淡化. 这些膜提供高盐排斥和流量,可能降低净化水的能源成本.
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.
- 环境科学 环境科学
背景情况:
- 传统的蒸膜通常具有3D结构,导致透率低和能耗高.
- 开发高效且具有成本效益的海水淡化技术对于全球水安全至关重要.
研究的目的:
- 设计具有增强海水淡化性能的新型双不对称的简斯膜.
- 为了克服现有的3D叠叠膜结构的局限性.
主要方法:
- 直接从聚合物/溶液溶液制造二维 (2D) 聚合物纳米网.
- 定制相位分离速率,在疏水层上创建现场接的水友网.
- 纳米网架构,表面湿透性和膜性能的表征.
主要成果:
- 构建了具有真纳米级架构的双不对称的简斯膜 (约. 20纳米纤维直径,140纳米孔径大小).
- 在1.7秒内实现了超扩散的表面特性,水接触角度为0°.
- 证明了高效的海水淡化: >99%的盐排放,11公斤的m−2h−1流量和79%的能量效率,厚度为6.7微米的膜.
结论:
- 开发的基于网络的纳米纤维Janus膜为先进的液体分离提供了一个有前途的平台.
- 建筑和湿度的双重不对称性显著提高了海水淡化效率.
- 这种方法可以激发下一代材料的设计,用于净化水和其他分离过程.
相关概念视频
01:25Aquaporins
4.8K
Aquaporins or AQPs are a family of integral membrane proteins whose primary function is to transport water, while some called aquaglyceroporins also transport glycerol. In addition, aquaporins have also been suspected to be involved in transporting volatile substances, such as carbon dioxide and ammonia, across membranes. Such AQPs that act as gas channels are often highly expressed in cells involved in the gaseous exchange, such as red blood cells, epithelial cells, and pulmonary capillaries.
4.8K
01:15Dialysis
599
Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...
599
01:18Detergent Purification of Membrane Proteins
5.1K
Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
5.1K