▎ 摘　　要

NOVELTY - A polypyrrole-graphene-Prussian blue nano-composite material preparing method involves adding 0.1-1 mol hydrochloric acid with 0.1-1 mol pyrrole solution to obtain mixed solution, dispersing graphene in the mixed solution ultrasonically to obtain solution-M, adding 0.001-0.1 mol ferric chloride, potassium ferricyanide and hydrochloric acid to 50 ml water solution to obtain solution-N. The solution-M is added with the solution-N and stirred by using magnetic stirrer to obtain mixture. The mixture is reacted for 2 hours, filtered, washed and dried to obtain a finished product. USE - Method for preparing polypyrrole-graphene-Prussian blue nano-composite material that is utilized in biological sensor for determining glucose (claimed). ADVANTAGE - The method enables preparing the polypyrrole-graphene-Prussian blue nano-composite material with increased stability and good conductivity, in a simple, rapid and cost-effective manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a use of polypyrrole-graphene-Prussian blue nano-composite material in biological sensor for determining glucose.