Reduced graphene oxide (rGO) decorated with high density Ag nanorods has been prepared by reduction of GO and AgNO₃ using ethylene glycol as reducing agent and solvent. The resulting hybrids exhibit good performance for the non-enzymatic detection of hydrogen peroxide, with a linear detection range of 0.1 to 70 mM (r = 0.9996), and a detection limit of 2.04 μM at a signal-to-noise ratio of 3.