▎ 摘　　要

NOVELTY - A manganese dioxide/graphene/titanium dioxide modified glassy carbon electrode preparing method involves processing glassy carbon electrode by polishing the electrode by polishing powder and aluminum oxide powder to make electrode surface to be smooth. The electrode is cleaned with pure water, anhydrous ethyl alcohol and pure water ultrasonically and dried, followed by preparing manganese dioxide/graphene/titanium dioxide solution. The prepared manganese dioxide/graphene/titanium dioxide solution is coated on the electrode and dried under an infrared lamp to obtain finished product. USE - Method for preparing manganese dioxide/graphene/titanium dioxide modified glassy carbon electrode for electrochemical detection of hydrogen peroxide. ADVANTAGE - The method enables preparing the carbon electrode with high catalytic activity, good stability and high sensitivity. DETAILED DESCRIPTION - A manganese dioxide/graphene/titanium dioxide modified glassy carbon electrode preparing method involves processing glassy carbon electrode by taking glassy carbon electrode comprising polishing plate with diameter of 0.05 micron and polishing the electrode by polishing powder and aluminum oxide powder to make electrode surface to be smooth. The electrode is cleaned with pure water, anhydrous ethyl alcohol and pure water ultrasonically for 3 minutes and dried, followed by preparing manganese dioxide/graphene/titanium dioxide solution by mixing 5 ml graphene oxide water solution with concentration of 1 mg/ml and 1 mg titanium dioxide ultrasonically under UV light irradiation for 1 hours, adding 0.6 mg potassium permanganate uniformly, using UV light irradiation for 30 minutes, preparing modified glassy carbon electrode by placing the processed glassy carbon electrode under infrared lamp for 5 minutes. The 5 mu l prepared manganese dioxide/graphene/titanium dioxide solution is coated on the glassy carbon electrode and dried under an infrared lamp to obtain finished product. An INDEPENDENT CLAIM is also included for a method for utilizing manganese dioxide/graphene/titanium dioxide modified glassy carbon electrode for electrochemical detection of hydrogen peroxide.