| 氮掺杂长竹节状碳纳米管的制备及其生长机理 | |
| Preparation of N-Doped Long Bamboo-Like Carbon Nanotubes and Their Growth Mechanism | |
| 摘要: 采用电弧放电法，通过阳极棒与不锈钢片的共蒸发，制备了氮掺杂长竹节状碳纳米管（NDLBLCNTs）。借助扫描电子显微镜（SEM）、场发射高分辨透射电子显微镜（HRTEM）及其附带能量色散X射线（EDX）光谱仪和电子能量损失谱（EELS）、透射电子显微镜（TEM）等表征方法，对产物的形貌、结构和组成进行表征。表征结果表明，NDLBLCNTs的长度在640~835nm之间，其内径在23~35nm之间，外径在28~47nm之间；且在每一节“竹节”与另一节“竹节”的连接处形成的内腔中均有一个黑色纳米颗粒，其直径尺寸以及产物中的NDLBLCNTs的含量均与熔化、蒸发的不锈钢片的面积有关。对NDLBLCNTs的生长机理进行了简单的探讨。 | |
| 关键词: 电弧放电 氮掺杂 长竹节状碳纳米管 共蒸发 生长机理 | |
| 基金项目: | |
| Abstract: N-doped long bamboo-like carbon nanotubes(NDLBLCNTs) were prepared by DCarc-discharge with the coevaporation of anode and stainless steel sheet(SSS). The morphology, structure, and composition of the products were characterized by using scanning electron microscope(SEM), field emission high resolution transmission electron microscope(HRTEM), energy dispersive X-ray(EDX) spectrometer, electron energy loss spectroscopy (EELS), and transmission electron microscope(TEM). The results show that the lengths of the NDLBLCNTs are between 640 nm and 835 nm, the inner diameters are in the range of 23~35 nm, and the outer diameters are in the range of 28~47 nm. In each of the inner cavities formed at the "bamboo joints" there is a black nanoparticle. Both the diameters of such black nanoparticles and the content of NDLBLCNTs in the product are related with the melted and evaporated area of the SSS. The temperature gradient between the SSSand the center of arc discharge zone is about 87.5~94.4 ℃·mm-1. The coevaporation of the SSS together with the anode is the sufficient and necessary condition for the formation NDLBLCNTs. The growth mechanism of the NDLBLCNTs is discussed briefly. | |
| Keywords: arc-discharge N-doped long bamboo-like carbon nanotubes coevaporation growth mechanism | |
| 投稿时间：2013-10-08 修订日期：2013-12-17 | |
| 摘要点击次数: 1188 | |
| 全文下载次数: 2009 | |
| 李玲,林奎,张帆,崔兰,王慧,陈小平,张丽爽,Sayyar Ali Shah,崔屾.氮掺杂长竹节状碳纳米管的制备及其生长机理[J].无机化学学报,2014,30(5):1097-1103. | |
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