▎ 摘　　要

Chitosan (CS) decorated reduced graphene oxide-Ferrocene nanocomposite (RGO-Fc-CS) was synthesized by a one-pot reaction. In the synthesis process of RGO-Fc-CS, GO-Fc was successfully self-assembled via the pi-pi interaction, which had the features of large surface area and the high load. Then GO-Fc and CS linked via one-pot under alkaline conditions. The FT-IR, TGA, SEM were employed to characterize the successful synthesis of RGO-Fc-CS composites. A miniature electrochemical system was fabricated by RGO-Fc-CS modified glassy carbon electrode (expressed as RGO-Fc-CS/GCE) for the sensitive detection of RhB enantiomers via DPV. Electrochemical results revealed that the RGO-Fc-CS/GCE exhibited high molecular recognition toward RhB. Due to the synergy between the RGO-Fc and CS, the RGO-Fc-CS/GCE showed a linear range of 0.001-70 mu M with a LOD of 0.5 nM, indicating that RGO-Fc-CS/GCE has broad application prospects to simplify monitor RhB real-time.