▎ 摘　　要

NOVELTY - A graphene oxide-polyaniline o-palladium composite modified glassy carbon electrode preparing method involves using graphite oxide modified glassy carbon as working electrode, platinum electrode as counter electrode and saturated glycine as reference electrode, and phosphoric acid buffer solution, using cyclic voltammetry reductive graphene oxide and taking out graphite oxide modified glassy carbon electrode after reduction is finished. The modified glassy carbon electrode is washed with de-ionized water to obtain reduced graphene modified glassy carbon electrode. USE - Method for preparing graphene oxide-polyaniline o-palladium composite modified glassy carbon electrode for detecting bromate in water (claimed). ADVANTAGE - The method enables preparing the electrode with better catalytic performance. DETAILED DESCRIPTION - A graphene oxide-polyaniline o-palladium composite modified glassy carbon electrode preparing method involves using graphite oxide modified glassy carbon as working electrode, platinum electrode as counter electrode and saturated glycine as reference electrode, and phosphoric acid buffer solution with PH of 3.0-6.0 and concentration of 0.05-2.0 mol.dm3, using cyclic voltammetry reductive graphene oxide, and taking out graphite oxide modified glassy carbon electrode, after reduction is finished. The modified glassy carbon electrode is washed with de-ionized water to obtain reduced graphene modified glassy carbon electrode, followed by using three-electrode reduced graphene modified glassy carbon electrode as working electrode, platinum electrode as counter electrode and saturated glycol as reference electrode. The three-electrode is placed in mixed solution comprising aniline, o-aminophenol and hydrochloric acid, followed by carrying out polymerization method for preparing poly-o-aminophenol. The working electrode is removed after the polymerization is finished. The obtained electrode is washed with de-ionized water to obtain reduced graphene polyaniline o-aminophenol modified glassy carbon electrode, which is taken as working electrode, followed by using platinum electrode as counter electrode and saturated glycine as reference electrode of three-electrode. The three-electrode is placed in mixed aqueous solution of palladium chloride and potassium chloride to carry out electrolytic process. The working electrode is washed with de-ionized water after electrolysis to obtain finished product. An INDEPENDENT CLAIM is also included for a method for utilizing the graphene oxide-polyaniline o-palladium composite modified glassy carbon electrode.