▎ 摘　　要

A hybrid nanocomposite of MoS2 nanosheets and reduced graphene oxide (rGO) was fabricated by a facile and effective method. The morphology and structure of the nanocomposite (MoS2-rGO) were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, electrochemical impedance spectroscopy and cyclic voltammetry. The MoS2 nanosheets were uniformly anchored on the rGO framework with strong adhesion. A glassy carbon electrode modified by drop-casting with MoS2-rGO was used for the electrochemical oxidation of cysteamine (CA) in the presence of uric add (UA). Under optimum conditions, the anodic peak current of CA shows a linear relation with the CA concentration between 0.01 and 20 mu M with a detection limit of 7 nM. The proposed electrochemical sensor was used for determination of CA in human plasma. (C) 2016 Elsevier B.V. All rights reserved.