Graphitic Carbon Nitride Polymers toward Sustainable Photoredox Catalysis

Abstract

Abstract As a promising two‐dimensional conjugated polymer, graphitic carbon nitride (g‐C 3 N 4 ) has been utilized as a low‐cost, robust, metal‐free, and visible‐light‐active photocatalyst in the field of solar energy conversion. This Review mainly describes the latest advances in g‐C 3 N 4 photocatalysts for water splitting. Their application in CO 2 conversion, organosynthesis, and environmental purification is also briefly discussed. The methods to modify the electronic structure, nanostructure, crystal structure, and heterostructure of g‐C 3 N 4 , together with correlations between its structure and performance are illustrated. Perspectives on the challenges and opportunities for the future exploration of g‐C 3 N 4 photocatalysts are provided. This Review will promote the utilization of g‐C 3 N 4 materials in the fields of photocatalysis, energy conversion, environmental remediation, and sensors.