Abstract
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 μmol g-1h−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.
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