Photocatalytic CO2 conversion by polymeric carbon nitrides.

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.

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