Cobalt-Based ZIF Composite Membranes: In Situ Defect Engineering for Enhanced Water Stability and Gas Separation
Journal
Small
ISSN
1613-6810
1613-6829
Date Issued
2024-12-16
Author(s)
DOI
10.1002/smll.202409515
Abstract
Porous coordination polymers with excellent molecular sieving ability, high dispersibility, and good compatibility with engineered polymer matrices hold promise for various industrial applications, such as gas separation and battery separators. Here, an in situ defect engineering approach is proposed for highly processable cobalt (Co)-based zeolitic imidazolate frameworks (ZIFs) with enhanced molecular sieving ability and water stability. By varying alkylamine (AA) modulators, the pore structures and textural properties of ZIFs can be fine-tuned. The resulting high-loading composite membrane exhibits excellent C3H6/C3H8 separation performance and mechanical properties. This in situ defect engineering approach enables efficient interfacial engineering for high-performance composite membranes.
Subjects
defect modulation
defective ZIF-67
hydrocarbon separation
mixed matrix membranes
processability
water stability
SDGs
Publisher
Wiley
Type
journal article