Novel Janus Membrane for Membrane Distillation with Simultaneous Fouling and Wetting Resistance
Novel Janus Membrane for Membrane Distillation with Simultaneous Fouling and Wetting Resistance
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DOI：
10.1021/acs.est.7b02848
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发表时间：
2017-11-21
影响因子：
11.4
通讯作者：
Lin, Shihong
中科院分区：
文献类型：
--
作者：
Huang, Yu-Xi;Wang, Zhangxin;Lin, Shihong
开发了一种新型的Janus膜，该膜集成了全疏基底和在空气中亲水的水下超疏油表层，以使膜蒸馏（MD）能够对具有疏水污垢和两亲性润湿剂的高盐度盐水进行脱盐。设计以克服现有MD膜的局限性，Janus膜已显示出在任何现有膜（包括疏水膜、全疏膜和具有亲水表面涂层的疏水膜）中未观察到的新颖润湿性质。同时抵抗膜污染和润湿，Janus膜可以维持稳定的MD性能，即使具有挑战性的进料沃茨，因此可以潜在地将MD转变为使用低级热能使具有复杂组成的高盐废水脱盐的可行技术。
A novel Janus membrane integrating an omniphobic substrate and an in-air hydrophilic, underwater superoleophobic skin layer was developed to enable membrane distillation (MD) to desalinate hypersaline brine with both hydrophobic foulants and amphiphilic wetting agents. Engineered to overcome the limitations of existing MD membranes, the Janus membrane has been shown to exhibit novel wetting properties unobserved in any existing membrane, including hydrophobic membranes, omniphobic membranes, and hydrophobic membranes with a hydrophilic surface coating. Being simultaneously resistant to both membrane fouling and wetting, a Janus membrane can sustain stable MD performance even with challenging feed waters and can thus potentially transform MD to be a viable technology for desalinating hypersaline wastewater with complex compositions using low-grade-thermal energy.