材料結(jié)構(gòu)及其性能(英文版)(已修改)
2025-01-08 21:38 本頁(yè)面
【正文】 OneDimensional Nanomaterials——Carbon NanotubesReporter : Teammates: Wan jun Wu Yuanhe Wang Binbin Yang Yongzhu11423OutlineIntroductionStructure and PropertiesPreparationApplications IntroductionSumio IijimaCarbon nanotubes (CNTs) was first discovered by Iijima in 1991CNTs: rolling up a thin graphene sheet. CNTsSWCNTs MWCNTsProduction Methods method Vaporization method Vapor Deposition (CVD)PreparationCVD methods have been successfully applied in making carbon nanotubes. The growth process with this method involves heating a catalyst material to high temperatures in a tube furnace and flowing a hydrocarbon gas through the tube reactor for a period of time. Materials grown over the catalyst are collected upon cooling the system to room temperature. parameters: hydrocarbons, catalysts: such as transitionmetal nanoparticles growth temperature. Left diagram: base growth mode. Right diagram: tip growth modeCVD growth mechanism Process : Dissociation of hydrocarbon molecules catalyzed by the transition metal. Dissolution and saturation of c
教學(xué)課件相關(guān)推薦
鄂ICP備17016276號(hào)-1