Coupling electrocatalytic redox-active sites in a three-dimensional bimetalloporphyrin-based covalent organic framework for enhancing carbon dioxide reduction and oxygen evolution

The 3D Co/Ni–TPNB-COF couples redox-active sites due to the charge redistribution between Ni( ii )-porphyrin and Co( ii )-porphyrin, and further simultaneously enhances its electrocatalytic carbon dioxide reduction and oxygen evolution performances.