Rapid microwave-assisted syntheses of reduced graphene oxide (RGO)/ZnIn2S4 microspheres as superior noble-metal-free photocatalyst for hydrogen evolutions under visible light

- Flower-like RGO/ZnIn2S4 microspheres were prepared by a rapid microwave-assisted method.
- RGO/ZnIn2S4 microspheres are consisted of interwoven ultrathin nanosheets of ZnIn2S4 and RGO.
- Flower-like RGO/ZnIn2S4 microspheres show superior photocatalytic activity for hydrogen evolution.
- The optimum activity over 1.0 wt% RGO/ZnIn2S4 is comparable to that over 1.0 wt%-Pt/ZnIn2S4.