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Scalable Ti3C2Tx MXene Interlayered Forward Osmosis Membranes for Enhanced Water Purification and Organic Solvent Recovery.
ACS Nano ( IF 15.8 ) Pub Date : 2020-06-26 , DOI: 10.1021/acsnano.0c04471 Xing Wu 1 , Mingmei Ding 1, 2 , Hang Xu 2 , Wen Yang 2 , Kaisong Zhang 3 , Huali Tian 3 , Huanting Wang 4 , Zongli Xie 1
ACS Nano ( IF 15.8 ) Pub Date : 2020-06-26 , DOI: 10.1021/acsnano.0c04471 Xing Wu 1 , Mingmei Ding 1, 2 , Hang Xu 2 , Wen Yang 2 , Kaisong Zhang 3 , Huali Tian 3 , Huanting Wang 4 , Zongli Xie 1
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The design of nanosheets interlayer between the substrate and polyamide layer has attracted growing attention to improve the performance of thin-film composite membranes. However, the membrane size is limited by current fabrication methods such as vacuum filtration. Herein, a high-performance MXene (Ti3C2Tx) interlayered polyamide forward osmosis (FO) membrane is fabricated based on a combination of a facile and scalable brush-coating of MXene on nylon substrates and the interfacial polymerization process. The as-prepared FO membrane shows high water permeability of 31.8 L m–2 h–1 and low specific salt flux of 0.27 g L–1 using 2.0 mol L–1 sodium chloride as the draw solution. This is attributed to the adjustment of substrate properties and the polyamide layer by coating of MXene as well as the facilitation of water transportation by the interlayer distances between Ti3C2Tx. The membrane also exhibits a good organic solvent forward osmosis performance with high ethanol flux as 9.5 L m–2 h–1 and low specific salt flux of 0.4 g L–1 using 2.0 mol L–1 lithium chloride as the draw solution. Moreover, the MXene interlayered FO membrane demonstrates a feasible application in real seawater desalination and industrial textile wastewater treatment. This work presents an effective approach to fabricating nanomaterials interlayered FO membranes with superior performance for both desalination and organic solvent recovery.
中文翻译：
可扩展的Ti3C2Tx MXene层间正渗透膜，用于增强水净化和有机溶剂回收。
在基材和聚酰胺层之间的纳米片中间层的设计已引起越来越多的关注，以改善薄膜复合膜的性能。然而，膜的尺寸受到当前制造方法如真空过滤的限制。在此，基于在尼龙基材上方便且可扩展地涂刷MXene和界面聚合工艺的组合，制造了高性能MXene（Ti 3 C 2 T x）层间聚酰胺正向渗透（FO）膜。制备的FO膜在使用2.0 mol L –1的条件下显示出31.8 L m –2 h –1的高透水性和0.27 g L –1的低比盐通量用氯化钠作汲取溶液。这归因于通过涂覆MXene来调节基材性能和聚酰胺层，以及通过Ti 3 C 2 T x之间的层间距离促进水的输送。该膜也表现出良好的有机溶剂中的正向渗透具有高乙醇通量性能9.5 L M -2 ħ -1和0.4克L-低特定盐熔剂-1使用2.0摩尔大号-1氯化锂作为汲取溶液。此外，MXene夹层FO膜在实际的海水淡化和工业纺织废水处理中具有可行性。这项工作提出了一种有效的方法，以制造具有优异的脱盐和有机溶剂回收性能的纳米材料夹层FO膜。
更新日期：2020-07-28
中文翻译：
可扩展的Ti3C2Tx MXene层间正渗透膜，用于增强水净化和有机溶剂回收。
在基材和聚酰胺层之间的纳米片中间层的设计已引起越来越多的关注，以改善薄膜复合膜的性能。然而，膜的尺寸受到当前制造方法如真空过滤的限制。在此，基于在尼龙基材上方便且可扩展地涂刷MXene和界面聚合工艺的组合，制造了高性能MXene（Ti 3 C 2 T x）层间聚酰胺正向渗透（FO）膜。制备的FO膜在使用2.0 mol L –1的条件下显示出31.8 L m –2 h –1的高透水性和0.27 g L –1的低比盐通量用氯化钠作汲取溶液。这归因于通过涂覆MXene来调节基材性能和聚酰胺层，以及通过Ti 3 C 2 T x之间的层间距离促进水的输送。该膜也表现出良好的有机溶剂中的正向渗透具有高乙醇通量性能9.5 L M -2 ħ -1和0.4克L-低特定盐熔剂-1使用2.0摩尔大号-1氯化锂作为汲取溶液。此外，MXene夹层FO膜在实际的海水淡化和工业纺织废水处理中具有可行性。这项工作提出了一种有效的方法，以制造具有优异的脱盐和有机溶剂回收性能的纳米材料夹层FO膜。
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