▎ 摘　　要

NOVELTY - Preparing carbon paste electrode modified by graphene and ion imprinting membrane, comprises taking tetrapyrrole isophthalaldehyde as ligand, alpha -methacrylic acid as functional monomer, performing self-assembly in the presence of uranyl ions, adding the functional monomer 3-aminopropyltrimethoxysilane as a stabilizer and ethyl orthosilicate as a crosslinking agent to form a polymer, forming a film on the surface of the carbon paste electrode modified with graphene on the surface of the polymer, and removing the uranyl ions on the membrane to make graphene and ion-imprinted membrane modified carbon paste electrodes. USE - The membrane and IPTP sensor are useful for detecting uranium or uranyl ions (all claimed). ADVANTAGE - The method has detection limit of uranyl ions is 1.81 nmol/l, and has good reproducibility and recovery rate. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) carbon paste electrode modified by graphene and ion imprinting membrane obtained by method as mentioned above; (2) 4'-(4-(Imidazol-1-yl)phenyl)-2,2':6',2''-terpyridine (IPTP) sensor for ion blot recognition, comprising a carbon paste electrode (IIP/GR/CPE) modified with graphene and ion-imprinted membrane as a working electrode, a platinum electrode as a counter electrode, and a saturated calomel electrode as a reference electrode; and (3) UO22 + detection method, comprising the platinum electrode as the counter electrode, the saturated calomel electrode is a reference electrode, the graphene and the carbon paste electrode modified by an ion-imprinted membrane are working electrodes, using CHI-660C electrochemical workstation as the detection platform, and using differential pulse voltammetry for detection.