Enhanced Photocatalytic Performance of Systematically Designed g-C<sub>3</sub>N<sub>4</sub>/rGO/TiO<sub>2</sub> Ternary Nanocomposite

Graphitic carbon nitride (g-C3N4) has become a favorable photocatalyst due to its unique optoelectronic properties, however high recombination rate and low separation efficiency of the photogenerated charge carriers restrict their practical usage. To minimize the recombination rate, we synthesized a ternary nanocomposite, g-C3N4/rGO/TiO2 via a facile, simple, and cost-effective mechanochemistry technique. The ternary nanocomposite effectively degrades Rhodamine B (RhB) dye mainly due to higher visible light utilization and multi-step charge transfer mechanism. The optimal rGO plays an essential role in effective photocatalytic performance due to its unique electrical, large surface area, and optical properties. The synthesized nanocomposite degrades 80% RhB dye compared to pristine g-C3N4 and binary which degrades 39.6 and 64.8% respectively in 2h. This study showcases a simple, low-cost method for the effective degradation of dyes.