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Covalent Organic Frameworks in Separation.
Annual Review of Chemical and Biomolecular Engineering ( IF 7.6 ) Pub Date : 2020-06-08 , DOI: 10.1146/annurev-chembioeng-112019-084830
Saikat Das 1 , Jie Feng 1 , Wei Wang 1
Affiliation  

In the wake of sustainable development, materials research is going through a green revolution that is putting energy-efficient and environmentally friendly materials and methods in the limelight. In this quest for greener alternatives, covalent organic frameworks (COFs) have emerged as a new generation of designable crystalline porous polymers for a wide array of clean-energy and environmental applications. In this contribution, we categorically review the merits and shortcomings of COF bulk powders, nanosheets, freestanding thin films/membranes, and membranes on porous supports in various separation processes, including separation of gases, pervaporation, organic solvent nanofiltration, water purification, radionuclide sequestration, and chiral separations, with particular reference to COF material pore size, host–guest interactions, stability, selectivity, and permeability. This review covers the fabrication strategies of nanosheets, films, and membranes, as well as performance parameters, and provides an overview of the separation landscape with COFs in relation to other porous polymers, while seeking to interpret the future research opportunities in this field.

中文翻译:


分离中的共价有机框架。

在可持续发展之后,材料研究正在经历一场绿色革命,这正在使节能和环保的材料和方法成为人们关注的焦点。在寻求更绿色替代品的过程中,共价有机骨架(COF)作为新一代可设计的结晶多孔聚合物出现,适用于各种清洁能源和环境应用。在此贡献中,我们对各种分离过程中COF散装粉末,纳米片,独立式薄膜/膜和多孔载体上的膜的优缺点进行了分类回顾,包括气体分离,全蒸发,有机溶剂纳米过滤,水净化,放射性核素螯合以及手性分离,特别是涉及COF材料的孔径,主客体相互作用,稳定性,选择性和渗透性。这篇综述涵盖了纳米片,薄膜和膜的制造策略以及性能参数,并概述了与其他多孔聚合物相关的COF的分离前景,同时力图解释该领域的未来研究机会。

更新日期:2020-06-08
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