▎ 摘　　要

NOVELTY - Preparation of electrochemical sensor material involves adding graphite powder, potassium manganate, sulfuric acid and phosphoric acid to a single-mouth bottle, injecting quickly into frozen deionized water, mixing by mechanical agitation, adding hydrogen peroxide while stirring, maintaining, removing supernatant, washing lower layer solution by adding deionized water, maintaining the solution, washing, obtaining graphene oxide, dispersing graphene oxide in deionized water, adding polyvinylpyrrolidone to graphene solution, stirring, centrifuging with deionized water, adding obtained solution to silver nitrate solution, heating, adding aqueous solution of sodium citrate, condensing, refluxing, washing resultant solution using deionized water, obtaining silver-reduced graphene oxide, dispersing in deionized water, ultrasonically processing, adding chloroplatinic acid solution, stirring, adding palladium dichloride, and centrifugally concentrating. USE - Preparation of electrochemical sensor material. ADVANTAGE - The method efficiently provides electrochemical sensor material by simple method.