Cobalt‐Based ZIF Composite Membranes: In Situ Defect Engineering for Enhanced Water Stability and Gas Separation

Ki Jin Nam; Amro M. O. Mohamed; Jeongho Seong; Heseong An; Dun‐Yen Kang; Ioannis G. Economou; Jong Suk Lee

doi:10.1002/smll.202409515

Cobalt‐Based ZIF Composite Membranes: In Situ Defect Engineering for Enhanced Water Stability and Gas Separation

Ki Jin Nam, Amro M. O. Mohamed, Jeongho Seong, Heseong An, Dun‐Yen Kang^*, Ioannis G. Economou^*, Jong Suk Lee

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

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.

Original language	English
Article number	2409515
Journal	Small
Volume	21
Issue number	19
Early online date	16 Dec 2024
DOIs	https://doi.org/10.1002/smll.202409515
Publication status	Published - 12 May 2025

Keywords

defect modulation
defective ZIF-67
hydrocarbon separation
mixed matrix membranes
processability
water stability

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10.1002/smll.202409515

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title = "Cobalt‐Based ZIF Composite Membranes: In Situ Defect Engineering for Enhanced Water Stability and Gas Separation",

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.",

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author = "Nam, \{Ki Jin\} and Mohamed, \{Amro M. O.\} and Jeongho Seong and Heseong An and Dun‐Yen Kang and Economou, \{Ioannis G.\} and Lee, \{Jong Suk\}",

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doi = "10.1002/smll.202409515",

language = "English",

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T1 - Cobalt‐Based ZIF Composite Membranes: In Situ Defect Engineering for Enhanced Water Stability and Gas Separation

AU - Nam, Ki Jin

AU - Mohamed, Amro M. O.

AU - Seong, Jeongho

AU - An, Heseong

AU - Kang, Dun‐Yen

AU - Economou, Ioannis G.

AU - Lee, Jong Suk

PY - 2025/5/12

Y1 - 2025/5/12

N2 - 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.

AB - 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.

KW - defect modulation

KW - defective ZIF-67

KW - hydrocarbon separation

KW - mixed matrix membranes

KW - processability

KW - water stability

UR - https://www.scopus.com/pages/publications/85212231257

U2 - 10.1002/smll.202409515

DO - 10.1002/smll.202409515

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SN - 1613-6829

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ER -

Cobalt‐Based ZIF Composite Membranes: In Situ Defect Engineering for Enhanced Water Stability and Gas Separation

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