Photocatalytic CO2 conversion by polymeric carbon nitrides

Abstract

CO₂ is a vital compond for life, and its concentration significantly affects the living environment of the Earth. Extensive effort has been devoted to balance its concentration. Among the developed approaches, photocatalytic CO₂ conversion is considered as an ideal option. Previous reports suggest polymeric carbon nitride (PCN) can be effectively used as a metal-free photocatalyst to convert CO₂. Herein, the recent developments of PCN and the related photocatalysts for CO₂ conversion are summarized from the fundamental of using PCN, and their extended applications through molecular modification and physical/chemical coupling with other substances. The concluding remarks finally indicate the future challenges of using PCN materials for relevant solar-driven applications.