Related Experiment Video
Updated: May 21, 2026
11:27
Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
Leveraging Framework Dynamics: Solvent-Triggered Breathing in MOFs for Enhanced CO2 Photoreduction
Chenli Wang1, Chunyin Ye1, Daotong Wei1
1Anhui Provincial Key Laboratory of Advanced Catalysis and Energy Materials, Anhui Ultra High Molecular Weight Polyethylene Fiber Engineering Research Center,School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 261433, P. R. China.
Inorganic Chemistry
|May 20, 2026
Summary
Researchers tuned metal-organic framework (MOF) catalysts for CO2 reduction by exploiting a solvent-induced "breathing" effect. This dynamic structural change optimizes performance, offering a new strategy for designing smart catalytic materials.
Area of Science:
- Materials Science
- Catalysis
- Nanotechnology
Background:
- Metal-organic frameworks (MOFs) offer tunable properties for catalysis.
- Controlling dynamic framework behavior in MOFs for enhanced photocatalysis is challenging.
- Integrating responsive frameworks with catalytic sites is key for intelligent systems.
Purpose of the Study:
- To fine-tune the photocatalytic CO2 reduction (CO2RR) performance of a pyridine-nickel-functionalized MOF (PyNi-MIL-53) using a solvent-induced "breathing" effect.
- To investigate how solvent-driven structural changes in MOFs impact CO2 adsorption and electron transport.
- To demonstrate intelligent tuning of CO2RR activity and selectivity via solvent selection.
Main Methods:
- Synthesized pyridine-nickel-functionalized NH2-MIL-53(Al) (PyNi-MIL-53).
- Investigated solvent-induced reversible "breathing" (structural transformation) in different solvents.
- Evaluated photocatalytic CO2RR activity and selectivity using varying solvents, focusing on CO production.
Main Results:
- PyNi-MIL-53 exhibits reversible "breathing" in response to different solvents, altering pore dimensions and microenvironment.
- Solvent-driven structural changes modulate CO2 adsorption and photogenerated electron transport to Ni active sites.
- Cyclohexanone as solvent yielded the highest CO2 to CO conversion rate (403.3 μmol g⁻¹ h⁻¹) without a photosensitizer.
Conclusions:
- Solvent-induced "breathing" provides a dynamic regulation strategy for flexible MOFs in photocatalysis.
- Intelligent tuning of photocatalytic CO2RR is achievable by simply changing the solvent.
- This work opens avenues for designing responsive, smart catalytic materials for CO2 conversion.
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