Abstract
To improve the low photocatalytic efficiency of Cu2O caused by the serious photo-generated electron-hole recombination, in this work, MoS2 is proposed to combine with Cu2O to form a nanohybrid as a photo-electrocatalytic catalyst for hydrogen generation. It is found that the optimized hybrid catalyst of 50M-C exhibits the best performance with a current density of 3700 µA cm−2 at −1.2 V (vs SCE), which is approximately 18-fold and 8-fold higher than those of single MoS2 (200 µA cm−2) and Cu2O (450 µA cm−2), respectively. Moreover, the enhancement mechanism is also discussed, and a synergistic effect between MoS2 and Cu2O is verified, which can reduce the charge transfer resistance and accelerate the separation of photo-generated electrons and holes.
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