▎ 摘　　要

NOVELTY - Forming three-dimensional graphene by doping method involves oxidizing graphite raw material and using Hummers method to form graphene oxide nanoparticles; uniformly dispersing nanoparticles in graphite oxide aqueous solution, arranging solution in certain concentration, processing nanoparticles by using activator, adding nanoparticles to oxide solution, stirring; forming two-dimensional mesh-shaped graphite solution by adding graphene oxide doped nanoparticles to Teflon (RTM: polytetrafluoroethylene), conducting hydrothermal reaction to form three-dimensional mesh-like graphene. USE - For the preparation of three-dimensional graphene (claimed) used in sensor and biological fields. ADVANTAGE - The method through regulating reaction temperature and graphene oxide solution concentration effectively forms three-dimensional graphene nanoparticles that can be widely applied to the fields of super-capacitors, oil industry, and seawater desalination and so on. The nanoparticles are light weight, exhibit high intensity, high transparency, good conductivity and so on. DETAILED DESCRIPTION - Preparation of three-dimensional graphene by doping method involves forming three-dimensional graphene nanoparticles by oxidizing graphite raw material, and using Hummers method for forming graphene oxide nanoparticles; uniformly dispersing graphene oxide nanoparticles in quantitative amount of ultrasonic graphite oxide aqueous solution, arranging graphene oxide solution in certain concentration, processing the nanoparticles by using activator, after processing, adding the nanoparticles to the graphene oxide solution and stirring to form solution of graphene oxide doped nanoparticles; forming two-dimensional mesh-shaped graphite dilute solution by adding the solution of graphene oxide doped nanoparticles to reaction kettle containing Teflon (RTM: polytetrafluoroethylene), conducting hydrothermal reaction between the oxide layer of graphene sheet and conducting self-assembling reaction to form three-dimensional mesh-like graphene, at this time, doping the nanoparticles in the three-dimensional mesh-like graphene so as to improve performance of three-dimensional graphene, adjusting reaction temperature and graphene oxide concentration, and conducting reaction at each temperature for 4-16 hours thereby forming three-dimensional graphene.