▎ 摘　　要

NOVELTY - The structure has electrically conductive graphene network electrode that is provided with three-dimensional porous structure provided with macroscopic entirety of continuous graphene films. The grapheme films are provided with several pores. One electroactive material is deposited on three-dimensional grapheme network electrode, and is configured to function as electrochemical sensor to detect hydrogen peroxide. One material is selected from group consisted of platinum nanoparticles, multi-walled carbon nanotubes and manganese dioxide nanowalls. USE - Three-dimensional graphene network composite structure for detecting hydrogen peroxide. ADVANTAGE - Since the three-dimensional graphene network composite structure can be provided with multiple electron paths, the rapid and sensitive detection of analyte can be achieved. Since the structure can be provided with the three-dimensional porous structure, the electrolyte and the analyte can be accessed easily. DETAILED DESCRIPTION - The structure has one electroactive material that is comprised with multi-walled carbon nanotubes, and another electroactive material is comprised with platinum nanoparticles. A response time is less than or equal to 1.5 seconds. A detection limit of structure is less than 0.009 micro meter, when calculated in terms of signal-to-noise ratio. A linear detection range of the structure is about 0.025 micro meter to about 6.3 micro meter. An INDEPENDENT CLAIM is included for a method of synthesizing a three-dimensional graphene network composite structure for detecting hydrogen peroxide involves synthesizing the electrically conductive graphene network electrode via chemical vapor deposition. The multi-walled carbon nanotubes are deposited on the three-dimensional graphene network electrode to form a three-dimensional graphene network/multi-walled carbon nanotubes composite electrode. The platinum nanoparticles are deposited on the three-dimensional graphene network/multi-walled carbon nanotubes composite electrode. The manganese dioxide nanowalls are deposited on the three-dimensional graphene network electrode, using cathodic deposition. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical view illustrating the Raman spectrum of three-dimensional graphene network composite structure.