Fig. 1
From: CO2 electrochemical catalytic reduction with a highly active cobalt phthalocyanine
Cobalt phthalocyanine catalysts CoPc1 and CoPc2 investigated in this study. a CoPc1 bears no substituents. b CoPc2 bears one trimethyl ammonium group at position 1 of the isoindole subunits, and three tert-butyl groups (positions 2 or 3) of the other subunits
