Pt doped TiO2/g-C3N4 for photocatalytic degradation dye and hydrogen production

The study focuses on the synthesis and characterization of Pt doped TiO2/g-C3N4, composite aimed at photocatalytic dye degradation and hydrogen production under visible light. The composite was created through sol-gel and thermal polymerization techniques and followed by photodeposition of platinum. Techniques for characterization including XRD, FTIR-ATR, FESEM and UV-Vis/DRS were employed to verify the structural, morphological and optical characteristics of the materials. Methylene blue (MB) and Reactive Red 4 (RR4) were chosen as model dyes to assess the photocatalytic effectiveness. The addition of Pt improved charge separation and the absorption of visible light via the Surface Plasmon Resonance (SPR) effect, whereas the Z-scheme heterojunction formed between TiO2 and g- C3N4 facilitated efficient redox processes. Findings showed that Pt doped TiO2/g- C3N4, composite displayed outstanding dye degradation capability and notable hydrogen production, highlighting its promise for concurrent wastewater remediation and renewable energy creation.