▎ 摘　　要

NOVELTY - An electric sensor material preparing method involves preparing graphene oxide by utilizing conventionally reported methods, slowly adding a certain amount of ferric chloride hexahydrate and terephthalic acid to 50 mL of N, N-dimethylformamide solution, stirring the solution at room temperature for 30 minutes to obtain a clear and transparent mixed solution A, adding graphene oxide to the mixed solution A under the mass ratio of graphene oxide to the amount of ferric chloride hexahydrate substance is 1: 0.5-1: 2000, ultrasonically dispersing the solution for 20 minutes, stirring and dispersing for 30 minutes, and transferring the obtained mixed solution to a reaction kettle for solvothermal reaction under the reaction temperature at 100-180 degrees C, and the reaction time for 4-14 hours, after the reaction, cooling to room temperature, collecting the product, washing and drying to obtain the final product. USE - Method for preparing electric sensor material for detecting cadmium ion, lead ion, copper ion and manganese ion. ADVANTAGE - The method enables preparing electric sensor material with high detection sensitivity, better stability and strong anti-interference performance, in simple preparation method and cost effective manner. DETAILED DESCRIPTION - An electric sensor material preparing method involves preparing graphene oxide by utilizing conventionally reported methods, slowly adding a certain amount of ferric chloride hexahydrate and terephthalic acid to 50 mL of N, N-dimethylformamide solution under the amount of ferric chloride hexahydrate ranges from 1-20 mmol and the amount of terephthalic acid is 1-20 mmol, stirring the solution at room temperature for 30 minutes to obtain a clear and transparent mixed solution A, adding graphene oxide to the mixed solution A under the mass ratio of graphene oxide to the amount of ferric chloride hexahydrate substance is 1: 0.5-1: 2000, ultrasonically dispersing the solution for 20 minutes, stirring and dispersing for 30 minutes, and transferring the obtained mixed solution to a reaction kettle for solvothermal reaction under the reaction temperature at 100-180 degrees C, and the reaction time for 4-14 hours, after the reaction, cooling to room temperature, collecting the product, washing and drying to obtain the final product.