Achieving Highly Efficient Photocatalytic Hydrogen Evolution through the Construction of g-C₃N₄@PdS@Pt Nanocomposites

Selective supported catalysts have emerged as a promising approach to enhance carrier separation, particularly in the realm of photocatalytic hydrogen production. Herein, a pioneering exploration involves the loading of PdS and Pt catalyst onto g-C₃N₄ nanosheets to construct g-C₃N₄@PdS@Pt nanocomposites. The photocatalytic activity of nanocomposites was evaluated under visible light and full spectrum irradiation. The results show that g-C₃N₄@PdS@Pt nanocomposites exhibit excellent properties. Under visible light irradiation, these nanocomposites exhibit a remarkable production rate of 1289 μmol·g^-1·h^-1, marking a staggering 60-fold increase compared to g-C₃N₄@Pt (20.9 μmol·g^-1·h^-1). Furthermore, when subjected to full spectrum irradiation, the hydrogen production efficiency of g-C₃N₄@PdS@Pt-3 nanocomposites reaches an impressive 11,438 μmol·g^-1·h^-1, representing an eightfold enhancement compared to g-C₃N₄@Pt (1452 μmol·g^-1·h^-1) under identical conditions. Detailed investigations into the microstructure and optical properties of g-C₃N₄@PdS catalysts were conducted, shedding light on the mechanisms governing photocatalytic hydrogen production. This study offers valuable insights into the potential of these nanocomposites and their pivotal role in advancing photocatalysis.