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Cyclic voltammetry (CV) curves of bare GCE obtained in the presence of 3 mM H2O2 (a); CV curves of AuNPs/RGO modified electrode obtained in the absence (b) and presence of 3 mM H2O2 (d); and Ag-AuNPs/RGO modified electrode in the absence (c) and presence of 3 mM H2O2 (e). Scan rate: 50 mV·s−1.
