Figure 8

(a) CVs of 3D-graphene/Pt, RGO/Pt nanocomposite and Pt/C electrodes in 0.5 M H2SO4 solution; scan rate: 50 mV s−1, (b) CVs of 3D-graphene/Pt, RGO/Pt nanocomposite and Pt/C electrodes in 0.5 M H2SO4 + 1.0 M methanol solution; scan rate: 50 mV s−1 and (c) Current-time curves of the 3D-graphene/Pt nanocomposite, the RGO/Pt nanocomposite and Pt/C electrodes in a solution of 0.5 M H2SO 4+ 1.0 M methanol at +0.7 V.