What question did this study set out to answer?

The study aims to explore how different organic ligands, metal centres, and synthesis methods affect the oxygen adsorption capacity and selectivity of zinc-based frameworks.

April 19, 2026Materials Advances0 citationsOpen Access

Unveiling the oxygen adsorption potential of ZIFs: investigating the impact of organic ligands, metal centres, and synthesis methods

HMHamidreza MahdaviCSIRO Manufacturing LMLeena MelagCommonwealth Scientific and Industrial Research Organisation AKAbdollah KhosravanianCSIRO Manufacturing

Key Points

The study aims to explore how different organic ligands, metal centres, and synthesis methods affect the oxygen adsorption capacity and selectivity of zinc-based frameworks.
Examined mono- and bimetallic zeolitic imidazolate frameworks (ZIFs)
Analyzed the impact of various organic ligands and metal components
Utilized ultrasonication as a synthesis method to improve performance
Partial cobalt substitution in ZIF-8 significantly enhances oxygen capacity
Iron-rich ZIF-8 shows improved selectivity for oxygen adsorption
Ultrasonication improves cycling stability of the materials

Abstract

Mono- and bimetallic ZIFs for oxygen capacity, selectivity, and cyclability as a function of organic ligand, metal centre, and synthesis method are mapped. Partial Co substitution in ZIF-8 maximises capacity, Fe-rich ZIF-8 prioritises selectivity, and ultrasonication enhances cycling stability.

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