Fabricating of multi-interfacial charge transfer paths in the novel noble-metal-free Ni2P/ZnS/g-C3N4 ternary nanocomposite for enhanced charge separation and transfer for photocatalytic H2 generation

• Main Authors: Rameshbabu R., Paw J.K.S., Ajaijawahar K., Vinoth V., Jadoun S., Pugazhenthiran N., Kiong T.S.
• Other Authors: 55621066400
• Format: Article
• Published: Elsevier Ltd 2025
• Subjects: Ball milling; Carbon nitride; Charge transfer; Hydrogen production; Hydrothermal synthesis; Nanocomposites; Photocatalytic activity; Precious metals; Solar light; Solar power generation; Carrier transfer; Co-catalyse; Energy; H 2 production; Interfacial charge transfer; Metal free; Ni2P/ZnS/g-C3N4; Photo-catalytic; Synthesised; Ternary nanocomposites; Sulfur compounds

This work reports the development of a novel Ni?P/ZnS/C?N? ternary nanocomposite photocatalyst for efficient hydrogen (H?) production. The nanocomposite was synthesized using a facile approach combining hydrothermal synthesis, ball milling, and wet impregnation methods then characterized using various techniques. Photocatalytic H? generation was evaluated under simulated solar irradiation with sodium sulfite (Na?SO?)/sodium sulfide (Na?S) as sacrificial reagents. The optimized 3NP/ZnS-8CN (3% Ni2P/ZnS/8% C3N4) catalyst displayed an exceptional H? generation rate of 3991 �mol h?? g??, exceeding both pristine g-C3N4 (by 10.2 times) and 3% Ni2P/ZnS (by 1.2 times). This represents the highest reported rate of H? evolution for a graphitic carbon nitride (g-C3N4) based ternary nanocomposite under simulated solar radiation. Furthermore, the 3NP/ZnS-8CN photocatalyst exhibited good stability over four reaction cycles. This study provides valuable insights for designing efficient noble metal-free g-C3N4-based photocatalysts, which can significantly contribute to the transition to solar-driven hydrogen generation. The results of this study suggest that the synthesized composite materials hold significant promise for the advancement of new energy technologies. ? 2024 Elsevier B.V.