▎ 摘　　要

NOVELTY - A copper sulfite/graphene oxide/multi-walled carbon nanotubes composite nanoparticle modified electrode preparing method involves activating multi-walled carbon nanotubes in a mixed solution of sulfuric acid/nitic acid, diluting, filtering and drying, weighing the activated multi-walled carbon nanotubes in water, adding graphene oxide sol and ultrasonically dispersing to obtain a uniform solution, adding copper nitrate, polyvinylpyrrolidone and thiourea, stirring, carrying out by heating, washing and drying to obtain the finished product. USE - Method for preparing copper sulfite/graphene oxide/multi-walled carbon nanotubes composite nanoparticle modified electrode. ADVANTAGE - The method enables preparing copper sulfite/graphene oxide/multi-walled carbon nanotubes composite nanoparticle modified electrode with better detection effect and high detection sensitivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a copper sulfite/graphene oxide/multi-walled carbon nanotubes composite nanoparticle modified electrode prepared by the method.