▎ 摘　　要

NOVELTY - A molecularly imprinted electrochemical sensor comprises a glassy carbon electrode, a thioindigo-platinum nanoparticle-nitrogen-doped graphene composite nanomaterial layer and molecularly imprinted polymer layer, where the a thioindigo-platinum nanoparticle-nitrogen-doped graphene composite nanomaterial layer is coated on surface of the glassy carbon electrode and the molecularly imprinted polymer layer is coated on surface a thioindigo-platinum nanoparticle-nitrogen-doped graphene composite nanomaterial layer. USE - Molecularly imprinted electrochemical sensor for detecting patulin. ADVANTAGE - The molecularly imprinted electrochemical sensor has improved detection efficiency, can be prepared in simple, accuracy, rapid and cost effective manner. DETAILED DESCRIPTION - A molecularly imprinted electrochemical sensor for detecting patulin comprises a glassy carbon electrode, a thioindigo-platinum nanoparticle-nitrogen-doped graphene composite nanomaterial layer and molecularly imprinted polymer layer, where the a thioindigo-platinum nanoparticle-nitrogen-doped graphene composite nanomaterial layer is coated on surface of the glassy carbon electrode and the molecularly imprinted polymer layer is coated on surface a thioindigo-platinum nanoparticle-nitrogen-doped graphene composite nanomaterial layer, a thioindigo-platinum nanoparticle-nitrogen-doped graphene composite nanomaterial layer is prepared by preparing a mixture aqueous solution platinum chloride and aqueous hydrochloric acid, dispersing nitrogen-doped graphene in mixed solution, centrifuging, collecting black reaction product is collected, washing with acetonitrile, water and drying to obtain a platinum nanoparticle-nitrogen-doped graphene composite nanomaterial, mixing thiopurine, adding dimethylformamide and centrifuging to obtain the finished product and the molecularly imprinted polymer layer is a molecularly imprinted polymer layer formed by electropolymerization using thioindole as a polymerization monomer and patulin as a template molecule.