Electrochemical Detection of H₂O₂ on Graphene Nanoribbons/Cobalt Oxide Nanorods-Modified Electrode

Figure 4

(a) CVs were recorded at different scan rates from 10 to 200 mV/s using a GNR/Co₃O₄/GCE in 0.1 M PBS (pH 7.4) containing 30 μM H₂O₂. (b) A linear plot was made between oxidation peak currents of H₂O₂ and square root of scan rates.

(a)

(b)