Au surface plasmon resonance promoted charge transfer in Z-scheme system enables exceptional photocatalytic hydrogen evolution

Highly efficient photocatalytic water reduction to evolve hydrogen can be achieved by the construction of Z-scheme systems that mimics natural photosynthesis. However, coupling appropriate semiconductors with suitable potential still remains challenging. Herein, we report a novel system, based on Au decorated 5,10,15,20-tetrakis(4-trimethylammoniophenyl) porphyrin tetra(p-toluene sulfonate) functionalized iron-doped carbon nitride. We prepared nitride varying amount iron dopant and then obtain heterostructure photocatalyst. Owing strong interfacial contact proper band alignment, system is fabricated. Finally, deposited nanoparticles over surface as-fabricated promote redox properties via charge carrier’s separation transfer. The 3Au-3 P/30Fe-CN photocatalyst excellent H2 evolution activity producing 3172.20 µmol h−1 g−1 under UV–visible irradiation. calculated quantum efficiencies for at 365 420 nm irradiation wavelengths are 7.2% 3.26%, respectively. experimentally observed efficiency our supported density functional theory simulations in terms lowest work function electrostatic interaction among constituents system.