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O2 Activation by a Heterobimetallic Zr/Co Complex
Hongtu Zhang1, Gillian P Hatzis1, Curtis E Moore1
1Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , United States.
Journal of the American Chemical Society
|June 12, 2019
Summary
This study details a novel two-electron oxygen reduction using a zirconium-cobalt complex. This breakthrough advances renewable fuel cell technology and aerobic oxidation reactions.
Area of Science:
- Inorganic Chemistry
- Catalysis
- Renewable Energy
Background:
- Oxygen reduction is crucial for renewable fuel cells and aerobic oxidation.
- Developing efficient catalysts for oxygen reduction is a significant challenge.
Purpose of the Study:
- To report a novel two-electron oxygen reduction reaction.
- To investigate the cooperative role of a heterobimetallic complex in redox processes.
Main Methods:
- Synthesis of a heterobimetallic Zr/Co complex.
- Reaction of the complex with O2 and O atom transfer reagents.
- Characterization of oxygenated species.
Main Results:
- The d0 ZrIV center with an appended Co-I site facilitates rapid two-electron O2 reduction.
- Reactive oxygenated species, including peroxo and oxo complexes, were generated.
- The bimetallic complex demonstrated cooperative activity in multielectron redox processes.
Conclusions:
- The Zr/Co complex offers a new synthetic pathway for oxygen reduction.
- This system highlights a cooperative mechanism where each metal plays a distinct role.
- The findings contribute to the development of advanced catalysts for energy applications.
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