▎ 摘　　要

Non-enzymatic voltammetric analysis of epinephrine (EP) was conducted based on three-dimensional rosette vanadium sulfide nanosheet spheres-reduced graphene oxide nanosheets/indium tin oxide (VS2 NSSs-RGO/ITO) electrode. The results show that the diameter of VS2 NSSs is about 5 mu m and the thickness of nanosheet is 200 nm, and the RGO is a transparent sheet structure with some folds. The electrode exhibits an enhanced electrochemical response in EP analyte, which shows a high sensitivity of 1.39 mu A.mu M-1 towards EP (0-60 mu M) and the lowest detection limit obtained is 0.017 mu M (S/N = 3). The electrode also exhibits an excellent selectivity, repeatability and stability. The prepared sensor has been successfully applied in real samples and it has a great potential to be used in clinical test.