Visible-Light-Driven g-C₃N₄/TiO₂ Based Heterojunction Nanocomposites for Photocatalytic Degradation of Organic Dyes in Wastewater: A Review

Water pollution by organic contaminants is one of the most severe issues confronting world today as a result rapid increase industrialization, urbanization, human population growth, and advances in agricultural technologies. Several attempts have been made to address global water utilizing conventional wastewater treatment However, methods several limitations such low efficiency, high operation costs, generation secondary waste, require additional chemicals oxidants extra energy. Therefore, Heterogeneous photocatalysis has gained lot attention degradation persistent pollutants because it combines environmental friendliness, cheap cost, safety. Subsequently, designing novel nanocomposite photocatalysts with strong visible light-harvesting ability, efficient charge separation transportation, superb stability imminently desired for treatment. Recently, notion combining g-C 3 N 4 TiO 2 design photocatalytic performance heterojunction photoactive nanocomposites pollutant received attention. Meanwhile, construction /TiO -based may enhance ability harvesting light, boost transfer robust activity. Firstly, this review concisely explained main sources pollution, well potential approaches fundamental mechanism heterogeneous photocatalysis. details properties, synthesis techniques, photoactivity modification strategies, applications , 2, are presented. Following that, recent aimed at improving various types visible-light-driven presented detail. Finally, some concluding remarks perspectives on challenges opportunities constructing different heterostructured