Improved charge transfer by binary Ni3S2-NiS2 for boosting the photocatalytic hydrogen generation over g-C3N4

Developing efficient, cheap and robust photocatalysts for hydrogen evolution is promising to solve the issues of energy shortage and environmental degradation. In this work, binary Ni3S2-NiS2 was in-situ grown on g-C3N4 (CN) through a one-pot hydrothermal method. The optimal hydrogen evolution activity (1206.6 mu mol g(-1)h(-1)) was achieved from Ni3S2-NiS2/CN-3 with excellent stability under visible light irradiation. Improved light absorption and superior interfacial charge transfer properties including suppressed photogenerated carrier recombination and efficient separation of photogenerated electron-hole pairs have been observed, which account for the enhanced photocatalytic performance.

Automated summary

In this study, binary Ni3S2-NiS2 was grown on g-C3N4 through a hydrothermal method, achieving optimal hydrogen evolution activity. Improved light absorption and superior interfacial charge transfer properties were observed, leading to enhanced photocatalytic performance.