Fig. 4From: A Facile One-Pot Synthesis of Au/Cu2O Nanocomposites for Nonenzymatic Detection of Hydrogen Peroxide a CVs of the Au/Cu2O/GCE in the presence of 0.5 mM H2O2 at different scan rates in 0.1 M PBS (pH = 7.0). b The linear relationship between the cathodic current at −0.30 V and the square root of scan ratesBack to article page