Single-wall carbon nanotubes (SWNTs) were mass-produced by a newly developed DC arc plasma jet method for the evaporation of a metal-doped carbon anode.The production rate of the cottonlike soot was significantly higher than that by conventional DC arc discharge evaporation,and the highest yield was 1.24 g/min.Investigations by scanning electron microscopy,high-resolution transmission electron microscopy and Raman spectroscopy indicated that more than 50% of the cottonlike carbon soot was composed of fibrous bundles of SWNTs.Through analysis of the breathing modes in the Raman spectra of the cottonlike soot,the diameter of each SWNT was determined to range from 1.28 to 1.52 nm.
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机译:单壁碳纳米管(SWNTs)通过新开发的直流电弧等离子体喷射方法大量生产,用于蒸发金属掺杂的碳阳极,棉状碳黑的生产率明显高于传统的直流电弧放电蒸发,最高产量为1.24 g / min。通过扫描电子显微镜,高分辨率透射电子显微镜和拉曼光谱研究表明,棉状碳黑中有50%以上由SWNTs的纤维束组成。在棉烟灰的拉曼光谱中,每个SWNT的直径确定为1.28至1.52nm。
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