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Updated: Sep 12, 2025

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Anion controlled selectivity in oxygen reduction catalysed by a dinuclear cobalt N,O-Schiff base complex
Charles A James1, Jessica E Swindells2, Harry Ellis2
1School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK.
None:
A new dinuclear cobalt complex selectively catalyses 4e- reduction of O2 to water in methanol containing acetic acid. Its TOF of 0.031 s-1 and overpotential of 690 mV outperform the few previous Co N,O-chelate based catalysts for the 4e- ORR. Replacing acetic acid with NH4PF6 as proton source induces a complete and unprecedented switch to the H2O2 producing 2e- pathway. Mechanistic studies suggest a peroxo intermediate for both pathways, with acetate coordination/decoordination determining the destination of a key electron transfer.
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