Facile Synthesis of Copper-Coated-Reduced-Graphene-Oxide and Its Application as a Highly Sensitive Electrochemical Sensor for Hydroquinone

Figure 5

CV of GCE (a), rGO/GCE (b), and Cu/rGO/GCE (c) in PBS containing 5.0 μM HQ; scanning rate, 120 mV·s⁻¹.