▎ 摘　　要

NOVELTY - The method involves dissolving nitrogen-containing sulfur compound in graphene oxide water solution. The nitrogen-containing sulfur compound is mixed uniformly and stirred to completely dissolve for drying and forming film after high temperature annealing to obtain nitrogen and sulfur co-doped film precursor. The obtained nitrogen and sulfur co-doped film precursor is soaked in the metal salt water solution. Load reaction is carried out for washing and drying to obtain a nitrogen sulfur co-doped porous graphene film of load metal nano particles. USE - Method for preparing nitrogen sulfur co-doped porous graphene film loaded with metal nano particles. ADVANTAGE - The method is simple, the whole process does not need to additionally introduce reducing agent, the production efficiency is high, and the reaction condition is mild and controllable, it does not require complex reaction device, it is suitable for popularization and application, and has low production cost. The obtained graphene film has porous structure, flexibility, self-supporting, excellent electro-catalysis performance and so characteristics, and it has a certain pushing action for development of high-sensitivity enzyme-free electrochemical biological sensor. The graphene film catalytic electrode performance of the control and sensitization electrode interface, it not only can realize (doped) graphene porous framework structure and metal nano particle multi-level combination, but also can fully develop the excellent electrical and chemical graphene, mechanical property. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating the method for preparing nitrogen sulfur co-doped porous graphene film loaded with metal nano particles.