杰纳斯
材料科学
膜
海水淡化
结垢
膜蒸馏
生物污染
润湿
化学工程
废水
乳状液
膜污染
超亲水性
渗透
接触角
正渗透
纳米技术
环境工程
反渗透
复合材料
化学
环境科学
工程类
生物化学
标识
DOI:10.1002/admi.202101738
摘要
Abstract Janus membranes with excellent fouling resistance and mass transport properties are highly desired to improve the performance and efficiency in the treatment of oil‐contaminated wastewater. The fabrication of Janus membranes requires control of both the membrane microstructure and the interfacial compatibility between distinct components. This work presents a vapor‐based strategy to incorporate Janus property into porous substrates without the wetting incompatibility in solution‐based Janus fabrications. The method allows for the retention of the membrane microstructure and the tuning of the modification depth for flux improvement. The integration of hydrophilic and omniphobic nanocoatings enables simultaneous resistance to emulsion wetting and oil fouling in the membrane distillation of oily wastewater. The Janus membrane demonstrates excellent desalination performance in treating oil‐contaminated wastewater, with >99.99% salt rejection at >230 g L −1 dissolved salt and stable permeate flux at oil content of 5 g L −1 .
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