Design and construction of homogeneous heterogeneity Co–Zn-ZIF-L membranes for efficient H 2 /CO 2 separation

The ZIF-L seeding layer was constructed by interfacial diffusion assisted by PVA–PAH chelated Zn 2+ , and a continuous, defect-free homogeneous heterostructure Co–Zn-ZIF-L membrane was prepared by secondary growth.