Fabrication of COF-MOF Composite Membranes and Their Highly Selective Separation of H2/CO2,Journal of the American Chemical Society

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Fabrication of COF-MOF Composite Membranes and Their Highly Selective Separation of H2/CO2
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2016-06-13 , DOI: 10.1021/jacs.6b03348
Jingru Fu ₁ , Saikat Das ₁ , Guolong Xing ₁ , Teng Ben ₁ , Valentin Valtchev _{1,

2} , Shilun Qiu ₁

Affiliation

The search for new types of membrane materials has been of continuous interest in both academia and industry, given their importance in a plethora of applications, particularly for energy-efficient separation technology. In this contribution, we demonstrate for the first time that a metal-organic framework (MOF) can be grown on the covalent-organic framework (COF) membrane to fabricate COF-MOF composite membranes. The resultant COF-MOF composite membranes demonstrate higher separation selectivity of H2/CO2 gas mixtures than the individual COF and MOF membranes. A sound proof for the synergy between two porous materials is the fact that the COF-MOF composite membranes surpass the Robeson upper bound of polymer membranes for mixture separation of a H2/CO2 gas pair and are among the best gas separation MOF membranes reported thus far.

中文翻译：

COF-MOF 复合膜的制备及其对 H2/CO2 的高选择性分离

鉴于新型膜材料在众多应用中的重要性，尤其是在节能分离技术方面，研究新型膜材料一直受到学术界和工业界的关注。在这项贡献中，我们首次证明了金属有机骨架 (MOF) 可以在共价有机骨架 (COF) 膜上生长以制造 COF-MOF 复合膜。由此产生的 COF-MOF 复合膜表现出比单独的 COF 和 MOF 膜更高的 H2/CO2 气体混合物的分离选择性。两种多孔材料之间协同作用的一个可靠证据是，COF-MOF 复合膜超过了聚合物膜的 Robeson 上限，用于混合分离 H2/CO2 气体对，并且是迄今为止报道的最好的气体分离 MOF 膜之一.

更新日期：2016-06-13

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