Electroreduction of Carbon Dioxide by Heterogenized Cofacial Porphyrins

Abstract Great attention has been paid to cofacial porphyrins due their many unique advantages over monomeric analogs. However, synthesis is usually complicated. In this work, a facile impregnation method for preparing heterogenized, cofacially stacked proposed. An anionic porphyrin introduced as an underlayer immobilization of cationic cobalt via electrostatic force. The metal center the underlying molecule contributes electronic structure upper porphyrin. Screening reveals iron be most efficient molecule, lowering activation energy barrier CO 2 electroreduction, with improved turnover frequency by 74% 8.0 s −1 at − 0.6 V versus RHE.