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A series of nickel hydroxide-modified cadmium sulfide/reduced graphene oxide (Ni(OH) 2 -CdS/rGO) nanocomposites were synthesized and characterized. The photocatalytic activity of the as-prepared Ni(OH) 2 -CdS/rGO materials for hydrogen production from water under visible light irradiation (λ > 420 nm) was investigated. The results demonstrated that Ni(OH) 2 is an efficient cocatalyst for photocatalytic hydrogen production and rGO can significantly enhance the rate of photocatalysis. The optimal Ni(OH) 2 loading was found to be 1.0 wt %, giving a rate for hydrogen production of 4731 μmol·h –1 ·g –1, which is nearly 10 times higher than that of CdS/rGO photocatalyst under the same condition. This work demonstrated the synergetic effect of Ni(OH) 2 and rGO to enhance catalytic activity for visible light-driven hydrogen production.
Yan et al. (Thu,) studied this question.