▎ 摘　　要

NOVELTY - A peroxide poly 3,4-ethylenedioxy thiophene (PEDOT)/graphene oxide (GO) modified electrode preparing method involves utilizing glassy carbon electrode as substrate, conductive polymer PEDOT and GO composition. The glassy carbon electrode is grinded with alumina abrasive and washed. The GO is dissolved in mixed solvent of ethanol and water, and added with EDOT. Electrochemical polymerization method is performed by using saturated calomel electrode as reference electrode, followed by placing PEDOT/GO electrode modified electrode in buffer, introducing nitrogen to obtain finished product. USE - Method for preparing peroxide poly 3,4-ethylenedioxy thiophene/graphene oxide modified electrode for detecting imidacloprid pesticide (claimed). ADVANTAGE - The modified electrode has high sensitivity, simple operation, easy preparation, stability and good repeatability for detecting imidacloprid. DETAILED DESCRIPTION - A peroxide poly 3,4-ethylenedioxy thiophene (PEDOT)/graphene oxide (GO) modified electrode preparing method involves utilizing glassy carbon electrode as substrate, conductive polymer PEDOT and GO composition. The glassy carbon electrode is grinded with alumina abrasive, washed by using water and acetone for further use. The GO is dissolved in a mixed solvent of ethanol and water, and added with EDOT, dark brown solution is dispersed after the formation of brown mixed solution, and added into electrolytic tank device, through nitrogen to remove oxygen. Electrochemical polymerization method is performed by using a three-electrode system, saturated calomel electrode as reference electrode, platinum electrode as counter electrode, glassy carbon electrode as the working electrode, with low potential of -0.2-0.2V, high potential of 1-2V, the scanning speed of 50-200 mV s-1, to obtain modified electrode, washed by using using ethanol and water, and dried by nitrogen to obtain the PEDOT/GO electrode, followed by placing PEDOT/GO electrode modified electrode in buffer pH 3-8, introducing nitrogen gas to remove oxygen, under the potential use of the constant potential to obtain finished product.