An electrokinetic approach to fabricating aquaporin biomimetic membranes for water purification
An electrokinetic approach to fabricating aquaporin biomimetic membranes for water purification
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DOI：
10.1016/j.desal.2018.10.010
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发表时间：
2019-02-15
期刊：
影响因子：
9.9
通讯作者：
Jeon, Tae-Joon
中科院分区：
文献类型：
--
作者：
Fuwad, Ahmed;Ryu, Hyunil;Jeon, Tae-Joon
膜技术由于其高效率和可靠性，几十年来一直主导着海水淡化行业。然而，传统的膜材料存在性能限制;因此，开发新材料的需求很高。近年来，水通道蛋白仿生膜已成为基于自然现象的下一代水淡化平台。水通道蛋白是一种天然的水选择性蛋白，具有特殊的水选择性和渗透性。然而，水通道蛋白必须嵌入在两亲性结构中，例如细胞膜，并且这些环境的模拟结构和稳定性代表了成功的水净化系统的关键因素。在此，我们报告了一种电动方法，该方法在施加的电场下稳定多孔基底上的含水通道蛋白的膜，从而在固体支持物上产生异常稳定和均匀的仿生膜。脂质体的表面形态分析表明，脂质体保持了其完美的形状和大小，没有出现融合或聚集。此外，在正渗透下，我们的膜呈现出盐截留率，达到97.8 +/- 0.7%，水通量为7.45 +/- 0.62 Lm（-2）h（-1）（LMH）。
Membrane technology has been dominating the water desalination industry for decades due to its high efficiency and reliability. However, conventional membrane materials present performance limitations; thus, the demand for the development of new material is high. In recent years, aquaporin biomimetic membranes have emerged as a next-generation water desalination platform based on natural phenomena. Aquaporin is a natural water-selective protein that possesses exceptional water selectively and permeability properties. However, aquaporin must be embedded in an amphiphilic structure, such as a cell membrane, and the mimetic structure and stability of these environments represent key factors for successful water purification systems. Herein, we report an electrokinetic approach that stabilizes the aquaporin-containing membranes on a porous substrate under an applied electric field, resulting in an exceptionally stable and uniform biomimetic membrane on a solid support. The surface morphological analysis shows that the liposomes retained their perfect shape and size and did not present fusion or aggregation. Moreover, under forward osmosis, our membrane presents a salt rejection rate that reached 97.8 +/- 0.7% with 7.45 +/- 0.62 Lm(-2)h(-1) (LMH) of water flux.