▎ 摘　　要

NOVELTY - Preparing molecularly imprinted electrode for electrochemical sensor, comprises polishing glassy carbon electrode, ultrasonically cleaning, drying naturally to obtain pretreated glassy carbon electrode, dispersing reduced graphene oxide and magnetic nanomaterial iron oxide-silicon dioxide in ultrapure water, ultrasonically mixing to obtain dispersion, taking dispersed droplets and applying to the surface of the pretreated glassy carbon electrode, coating the surface of iron oxide-silicon dioxide-reduced graphene oxide/glassy carbon electrode with naphthol solution, and drying naturally, adding the imprinted molecule solution and the functional monomer solution into phosphate buffer solution to prepare the imprinted solution, using electrochemical polymerization method, placing electrode in the imprinting solution, and scanning to obtain imprinted polymer modified electrode and placing electrode in the elution solution to remove the imprinted molecules by potentiostatic oxidation. USE - The molecularly imprinted electrode is useful in the detection of hydroxy radicals (claimed). ADVANTAGE - The method enables to prepare molecular imprinted electrode for electrochemical sensor, which has large specific surface area, good electronic transmission performance and strong adsorption capacity, high porosity, high conductivity, high sensitivity and good stability, and is capable of online detecting the hydroxy free radical in real time, without sampling and simplifying the detection process.