▎ 摘　　要

NOVELTY - A metal zinc porphyrin covalent organic framework material/graphene oxide modified electrode preparing method involves preparing a metal zinc porphyrin covalent organic framework material by dissolving a metal zinc porphyrin and terephthalaldehyde in chlorobenzene, n-butanol, acetic acid in a mixed solution, under nitrogen protection, refluxing at 85-135 degrees C for 70-72 hours, centrifugal washing, vacuum drying, to obtain metal zinc porphyrin covalent organic framework material. Modified electrode is prepared by dispersing metal zinc porphyrin covalent organic framework material and graphene oxide in N, N-dimethylformamide, sonicating for 24 hours, to obtain a mixed dispersion followed by applying mixed dispersion droplets on the surface of the cleaned glassy carbon electrode, forming uniform covalent organic framework material/graphene oxide composite film on the surface of the glassy carbon electrode after the solvent is completely evaporated. USE - Method for preparing metal zinc porphyrin covalent organic framework material/graphene oxide modified electrode that is utilized for detecting catechol and hydroquinone (claimed). ADVANTAGE - The method enables preparing metal zinc porphyrin covalent organic framework material/graphene oxide modified electrode with mild reaction condition, better chemical stability in simple and cost effective manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a use of metal zinc porphyrin covalent organic framework material/graphene oxide modified electrode for detecting catechol and hydroquinone.