an electrochemical sensor based on nickel oxides nanoparticle/graphene composites for electrochemical detection of epinephrine

the combination of graphene (gr) and nickel oxide nanoparticles (nio nps) yields nanostructured electrochemical sensor formed a novel kind of structurally uniform and electrocatalytic activity material. in cyclic voltammetry (cv) studies, in the presence of ep, nio/gr composite modified electrode shows a significantly higher current response for ep oxidation. based on differential pulse voltammetry (dpv) technique, the oxidation of ep exhibited the dynamic range between 1.0–1800.0 μm and the detection limit was 0.42 μm. finally, the resulting sensor was used to detect ep and ac simultaneously in human serum samples. the combination of graphene (gr) and nickel oxide nanoparticles (nio nps) yields nanostructured electrochemical sensor formed a novel kind of structurally uniform and electrocatalytic activity material. in cyclic voltammetry (cv) studies, in the presence of ep, nio/gr composite modified electrode shows a significantly higher current response for ep oxidation. based on differential pulse voltammetry (dpv) technique, the oxidation of ep exhibited the dynamic range between 1.0–1800.0 μm and the detection limit was 0.42 μm. finally, the resulting sensor was used to detect ep and ac simultaneously in human serum samples.