Synthesis of aligned carbon nanotube with straight-chained alkanes by nebulization method  

作　　者：刘云泉 陈小华 杨植 蒲玉兴 易斌 

机构地区：[1]College of Materials Science and Engineering,Hunan University

出　　处：《Transactions of Nonferrous Metals Society of China》2010年第6期1012-1016,共5页中国有色金属学报（英文版）

基　　金：Projects(50772033, 50972043) supported by the National Natural Science Foundation of China;Project(2007FJ3003) supported by the Natural Science Foundation of Hunan Province, China

摘　　要：Aligned carbon nanotubes(CNTs)were synthesized by nebulized spray pyrolysis of solutions of organometallics in carbon precursor solvents.Four types of straight-chained alkanes including n-pentane,n-hexane,n-heptane and n-octane were used as precursor solvents for synthesis of aligned CNTs.The results from scanning electron microscopy,transmission electron microscopy and Raman spectroscopy show that the CNTs obtained from them have different diameters and degrees of graphitization. It is found that the n-heptane is the most suitable for the growth of aligned CNTs with high quality and yield.The thermodynamic properties of precursory carbon sources such as boiling point and formation enthalpy are considered to play a decisive role in the synthesis of CNTs.It will be very helpful for the controllable preparation of aligned CNTs at relatively low cost.Aligned carbon nanotubes（CNTs）were synthesized by nebulized spray pyrolysis of solutions of organometallics in carbon precursor solvents.Four types of straight-chained alkanes including n-pentane,n-hexane,n-heptane and n-octane were used as precursor solvents for synthesis of aligned CNTs.The results from scanning electron microscopy,transmission electron microscopy and Raman spectroscopy show that the CNTs obtained from them have different diameters and degrees of graphitization. It is found that the n-heptane is the most suitable for the growth of aligned CNTs with high quality and yield.The thermodynamic properties of precursory carbon sources such as boiling point and formation enthalpy are considered to play a decisive role in the synthesis of CNTs.It will be very helpful for the controllable preparation of aligned CNTs at relatively low cost.

关 键 词：aligned carbon nanotubes NEBULIZATION straight-chained alkanes thermodynamic property 

分 类 号：TB383.1[一般工业技术—材料科学与工程]