Non-covalent hybridization of phthalocyanine onto polymeric carbon nitride, enabling visible-light CO2 conversion

Abstract

Cationic imidazolium-functionalized metal phthalocyanine (MPc-Im; M = Fe, Co) was immobilized onto the surface of polymeric carbon nitride (PCN), and the MPc-Im/PCN hybrids were examined as photocatalysts for visible-light CO₂ reduction in a non-aqueous environment. The hybrids produced CO as the main product in the presence of triethanolamine as an electron donor, along with CH₄ formation, as confirmed by tracer experiments with ¹³CO₂.