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Co@Co Cages Engineered from Hollowing MOFs for Enhanced Hydrogen Evolution Reaction Performance
Chuangwei Jiao1, Zetan Cao1, Jia He1
1Center for Ultrafast Science and Technology, School of Chemistry and Chemical Engineering, and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
The Journal of Physical Chemistry Letters
|June 7, 2023
Summary
Researchers developed hollow metallic cobalt-carbon (Co@Co(C)) cages for catalysis. These novel cages exhibit excellent performance in hydrogen evolution reactions, approaching platinum-based catalyst efficiency.
Area of Science:
- Materials Science
- Nanotechnology
- Catalysis
Background:
- Hollow engineering of metal-organic frameworks (MOFs) is crucial for applications in catalysis, sensors, and batteries.
- Existing hollow MOF derivatives are often limited to specific material types and require environmental elements.
Purpose of the Study:
- To synthesize novel hollow metallic cobalt-carbon (Co@Co(C)) cages.
- To evaluate the catalytic performance of these Co@Co(C) cages, particularly in hydrogen evolution reactions.
Main Methods:
- A facile two-step synthesis strategy was employed to create hollow metallic Co@Co cages.
- Characterization of the synthesized Co@Co(C) cages to identify structural and compositional properties.
Main Results:
- The synthesized Co@Co(C) cages demonstrated excellent catalytic performance.
- The material exhibited abundant exposed active sites and fast charge transfer capabilities.
- A low overpotential of approximately 54 mV at 10 mA cm-2 was achieved for the hydrogen evolution reaction, comparable to Pt/C electrodes.
Conclusions:
- The two-step synthesis strategy is effective for creating advanced hollow nanostructures.
- Co@Co(C) cages offer significant potential for improving catalytic activity and material utilization in energy applications.
- This approach expands the possibilities for designing MOF-based nanostructures with enhanced catalytic properties.
