碳纳米管
材料科学
双金属片
乙炔
热重分析
催化作用
拉曼光谱
化学气相沉积
衍射仪
化学工程
碳纳米管负载催化剂
扫描电子显微镜
碳纤维
纳米技术
金属
碳纳米纤维
复合材料
化学
冶金
有机化学
工程类
光学
复合数
物理
作者
Ayşegül Çağla Gerçek,Gökçen Gökçeli,Reha Yavuz,Nilgün Karatepe
摘要
Carbon nanotubes (CNTs) are known for a wide range of applications due to their various properties. Because these unique properties of the carbon nanotubes strongly depend on the structure, the primary aim is high efficiency and controlling the nanotube diameter during the production. In this study, single-walled carbon nanotubes (SWCNTs) were synthesized by chemical vapor deposition of acetylene (C2H2) on the Co–Mo/MgO catalyst. The effects of different catalyst preparation methods, Co/Mo, and support material ratios on the SWCNT growth efficiency were investigated by thermogravimetric analysis. Raman spectroscopy, scanning electron microscopy, and an x-ray diffractometer were also used for the structural and morphological characterization of the SWCNTs. As a result of the experimental studies, the optimum Co:Mo and metal/support ratio was determined as 1:3.5 and 15%, respectively. Considerable CNT growth efficiency (73%) has been achieved with the Co:Mo = 1:3.5/15% MgO catalyst prepared by the solgel method.
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