University of Kashan Journal of Nanostructures 2251-7871 6 4 2016 10 01 An Electrochemical Sensor Based on Nickel Oxides Nanoparticle/ Graphene Composites for Electrochemical Detection of Epinephrine 293 300 38482 10.22052/jns.2016.38482 EN Mohammad Mazloum-Ardakani Department of Chemistry, Faculty of Science, Yazd University, Yazd, Iran Fatemeh Farbod Department of Chemistry, Faculty of Science, Yazd University, Yazd, Iran Laleh Hosseinzadeh Department of Chemistry, Faculty of Science, Yazd University, Yazd, Iran Journal Article 2016 07 16 The combination of graphene and nickel oxide nanoparticles yields nanostructured electrochemical sensor formed a novel kind of structurally uniform and electrocatalytic activity material. In cyclic voltammetry studies, in the presence of epinephrine, nickel oxide / graphene  composite modified electrode shows a significantly higher current response for epinephrine oxidation. Based on differential pulse voltammetry technique, the oxidation of epinephrine 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 epinephrine and AC simultaneously in human serum samples. https://jns.kashanu.ac.ir/article_38482_6b6e78f82ccd2f5c80fe71ab246dc90a.pdf