Related Experiment Video
Updated: Jan 15, 2026
08:12
Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
Published on: September 5, 2018
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Water-Resistant Defective iMOFs via Halogen Coordination for CO2 Capture and Size-Selective Cycloaddition
Ping Liu1,2, Quanlan Liao1, Tianxiang Zhao1
1School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou, 550025, P.R. China.
Angewandte Chemie (International Ed. in English)
|January 14, 2026
Summary
Researchers developed stable, porous ionic metal-organic frameworks (iMOFs) using a novel ligand engineering approach. These materials show excellent performance in carbon dioxide capture and catalysis.
Area of Science:
- Materials Science
- Chemistry
- Catalysis
Background:
- Metal-organic frameworks (MOFs) offer tunable properties but often lack water stability.
- Developing robust MOFs with accessible active sites is crucial for practical applications.
Purpose of the Study:
- To engineer ionic metal-organic frameworks (iMOFs) with hierarchical porosity and enhanced stability.
- To investigate the catalytic activity of these iMOFs in CO2 utilization.
Main Methods:
- A bottom-up ligand engineering strategy was employed.
- Halogen anion coordination was used to construct iMOFs with abundant unsaturated Cu+ active sites.
- Defect engineering was utilized to enhance framework properties.
Main Results:
- The synthesized iMOFs exhibited hierarchical porosity and exceptional water stability via a Cu─Br stabilization mechanism.
- Defect-engineered frameworks showed enhanced CO2 adsorption and efficient humid CO2 capture.
- Superior catalytic performance in CO2-epoxides coupling reactions was observed, with size-selectivity linked to pore dimensions.
Conclusions:
- The developed ligand engineering strategy successfully created stable, hierarchical porous iMOFs.
- These iMOFs are promising for CO2 capture and catalysis, particularly in humid conditions.
- The Cu─Br stabilization mechanism is key to the observed water stability.
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