title: Fabrication of COF-MOF Composite Membranes and Their Highly Selective Separation of H2/CO2.
abstract: 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.
authors.affiliation: Department of Chemistry, Jilin University , 130012 Changchun, China.
authors.forename: Jingru
authors.initials: J
authors.lastname: Fu
authors.affiliation: Department of Chemistry, Jilin University , 130012 Changchun, China.
authors.forename: Saikat
authors.initials: S
authors.lastname: Das
authors.affiliation: Department of Chemistry, Jilin University , 130012 Changchun, China.
authors.forename: Guolong
authors.initials: G
authors.lastname: Xing
authors.affiliation: Department of Chemistry, Jilin University , 130012 Changchun, China.
authors.forename: Teng
authors.initials: T
authors.lastname: Ben
authors.affiliation: Department of Chemistry, Jilin University , 130012 Changchun, China.|Normandie Univ, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie, 14000 Caen, France.
authors.forename: Valentin
authors.initials: V
authors.lastname: Valtchev
authors.affiliation: Department of Chemistry, Jilin University , 130012 Changchun, China.
authors.forename: Shilun
authors.initials: S
authors.lastname: Qiu