A Superhydrophobic Trifluoromethyl-Containing Covalent Organic Framework Membrane for Efficient Oil/Water Separation,Macromolecular Rapid Communications

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A Superhydrophobic Trifluoromethyl-Containing Covalent Organic Framework Membrane for Efficient Oil/Water Separation
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2022-11-16 , DOI: 10.1002/marc.202200641
Jia-Qi Chu ₁ , Ya Lu _{1,

2} , Shi-Xian Gan ₁ , Qiao-Yan Qi ₁ , Chao Jia ₁ , Jin Yao _{1,

3} , Xin Zhao ₁

Affiliation

Oily water caused in the process of industry leads to not only the waste of resources, but also environmental pollution. Membrane separation, as a facile and efficient separation technology, has attracted widespread attention in the field of oil/water separation. The development of membrane materials with high separation performance is one of the key elements to improve separation efficiency. In this work, a superhydrophobic membrane composited with a trifluoromethyl-containing covalent organic framework (COF) is prepared, which exhibits excellent performance on separations of oil/water mixtures and water-in-oil emulsions. For different composition of oil/water mixtures, the highest flux of oil is up to 32 000 L m⁻² h⁻¹ and oil/water separation efficiency is above 99%. Moreover, the high oil/water separation efficiency remains unchanged after successive cycles. This work provides a feasible scheme for the design of high-efficiency oil/water separation membranes.

中文翻译：

用于高效油水分离的超疏水三氟甲基共价有机骨架膜

工业生产过程中产生的含油废水，不仅造成资源浪费，也造成环境污染。膜分离作为一种简便、高效的分离技术，在油水分离领域引起了广泛关注。开发具有高分离性能的膜材料是提高分离效率的关键要素之一。在这项工作中，制备了一种与含三氟甲基的共价有机骨架 (COF) 复合的超疏水膜，它在分离油/水混合物和油包水乳液方面表现出优异的性能。对于不同成分的油水混合物，最高油通量可达32 000 L m ⁻² h ⁻¹油水分离效率在99%以上。此外，高油水分离效率在连续循环后保持不变。该工作为高效油水分离膜的设计提供了可行的方案。

更新日期：2022-11-16

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