▎ 摘　　要

NOVELTY - Ternary composite is prepared by mixing cobalt nitrate hexahydrate and aqueous graphene oxide solution, and then adding aqueous ammonia solution and surface active agent i.e. polyvinyl pyrrolidone to the mixture. The mixture is refluxed, and then cobalt(II) hydroxide crystals are added to the refluxed material. The mixture is treated in a reaction kettle, and zinc hydroxide is added to the product, and then processed the mixture to obtain the desired product. USE - Ternary composite. ADVANTAGE - The ternary composite exhibits excellent gas sensing performances, and shows good prospects in the field of gas sensors.