title: Nanoconfined Zeolitic Imidazolate Framework Membranes with Composite Layers of Nearly Zero Thickness.
abstract: The key to preparing dense composite membranes is reducing the thickness of the composite layer with stable separation performance. Herein, we report a nanoconfined composite membrane prepared by in situ growth of Zeolitic Imidazolate Framework (ZIF) nanocrystals in the nanoporous layer of the substrate via a fine-tuning contra-diffusion method. The thickness of the composite layer on the membrane surface was nearly zero. The formed ZIF nanoconfined composite membranes showed state-of-art flux and high stability in removing dyes from water. This new strategy is expected to offer great opportunities for the potential practical application of polymer-supported metal-organic framework (MOF) composite membranes.
authors.affiliation: Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology , Beijing, China.
authors.forename: Naixin
authors.initials: N
authors.lastname: Wang
authors.affiliation: Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology , Beijing, China.
authors.forename: Xiaoting
authors.initials: X
authors.lastname: Li
authors.affiliation: Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology , Beijing, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.affiliation: Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology , Beijing, China.
authors.forename: Lilong
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology , Beijing, China.
authors.forename: Guojun
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology , Beijing, China.
authors.forename: Shulan
authors.initials: S
authors.lastname: Ji
keywords: ZIF membrane; high flux; nanoconfined membrane; nanofiltration; polymeric substrate; zero thickness