▎ 摘　　要

NOVELTY - A functionalized graphene-modified glassy carbon electrodes preparing method involves electrochemically activating a polished glassy carbon electrode, and modifying the surface of the polished glassy carbon electrode with a modifier containing an effective concentration of metal-doped gamma-uretyl triethoxysilane functionalized graphene oxide to obtain the finished product. USE - Method for preparing functionalized graphene-modified glassy carbon electrodes for detecting epinephrine concentration in electrochemical method (claimed). ADVANTAGE - The method enables preparing functionalized graphene-modified glassy carbon electrodes with better repeatability and stability.