【摘要】 用直流碳弧法在Ｈｅ气氛和Ａｒ气氛（压强为１０—８０ｋＰａ）下制备碳纳米管，在７７０℃下将阴极沉积物氧化至原重量的１％，得到纯的碳纳米管，测量不同气氛及压强下制备的碳纳米管的室温电子自旋共振（ＥＳＲ）谱，讨论了不同惰性气氛及压强对所制备碳纳米管的直径分布及ＥＳＲ谱线型、ｇ因子、线宽和相对自旋浓度的影响更多还原

【Abstract】 Abstract The nanotubes were produced by dc arc discharge method through helium and argon gas at a controlled pressure ranging from 10kPa to 80kPa.The crude nanotubes were oxidized at 770℃ until about 1% of the weight remained and the purified nanotubes were obtained.The electron spin resonance (ESR) of purified carbon nanotubes prepared under different inert gases with different pressures has been measured.The dependence of ESR line shape,linewidth, g value and spin density of the purified nanotubes on different inert gases and pressure is found and discussed.更多还原