▎ 摘　　要

The nanomaterials of vanadium oxide, nanocomposites of vanadium oxide and reduced graphene oxide have been synthesized using the hydrothermal method. Here, the modified Hummer's method is used to synthesize the reduced graphene oxide (RGO). The nanocomposites of VO + RGO-I and VO + RGO-II have been prepared with different masses of vanadium oxide and reduced graphene oxide. The structural, morphological, optical and hydrogen evolution properties were studied, analyzed and discussed in the manuscript. Remarkably, the band gap of the composite is reduced with an increase in the RGO concentration and the hydrogen evolution effect is more in nanocomposites compared to pristine vanadium oxide and graphene oxide.