▎ 摘　　要

NOVELTY - A molecularly imprinted photoelectrochemical sensor comprises a working electrode, a graphene oxide-based, cadmium sulfide-based quantum dot heterostructure photoelectric conversion layer and a molecularly imprinted polymer film layer sequentially coated on the surface of the electrode. USE - Molecularly imprinted photoelectrochemical sensor for detection of fumonisin B1 toxin (claimed). ADVANTAGE - The molecularly imprinted photoelectrochemical sensor has high sensitivity, better selectivity and better reproducibility. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for preparing a molecularly imprinted photoelectrochemical, involving determining an energy band of graphene oxide and cadmium sulfide quantum dots, spraying a uniform mixed droplet containing graphene oxide, cadmium sulfide quantum dots and chitosan on surface of a clean working electrode and drying to form a photoelectric conversion layer based on graphene oxide and cadmium sulfide quantum dot heterostructure, applying a molecularly imprinted polymerization droplet containing FB1 toxin to the surface of the heterostructure photoelectric conversion layer, forming a molecularly imprinted polymer film layer by photopolymerization and eluting template molecule with an ethanol solution to obtain the finished product (2) use of a molecularly imprinted photoelectrochemical sensor for detection of fumonisin B1 toxin.