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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >High-Crystalline Single- and Double-Walled Carbon Nanotube Mats Grown by Chemical Vapor Deposition
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High-Crystalline Single- and Double-Walled Carbon Nanotube Mats Grown by Chemical Vapor Deposition

机译:化学气相沉积法生长的高结晶度单壁和双壁碳纳米管垫

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摘要

High-quality mats of single- and double-walled carbon nanotubes (SWNT, DWNT) have been grown by the catalytic chemical vapor deposition (CVD) technique. Field-emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), and Raman spectroscopy revealed densely packed mats made by SWNTs, a small fraction of DWNTs, and bundles of both. Tube diameters range from 0.72 to 6 nm. Remarkably, Raman measurements show a very high ratio between the G-band and the D-band peak intensities, a clear indication that structural defects and amorphous carbon are largely absent, without any post-growth treatment.
机译:通过催化化学气相沉积(CVD)技术已经生长了高质量的单壁和双壁碳纳米管垫(SWNT,DWNT)。场发射扫描电子显微镜(FESEM),高分辨率透射电子显微镜(HRTEM)和拉曼光谱显示出由SWNT,一小部分DWNT以及两者捆绑而成的密集堆积的垫子。管直径范围为0.72至6 nm。值得注意的是,拉曼测量显示出G波段和D波段峰值强度之间的比率非常高,这清楚地表明,在不进行任何生长后处理的情况下,基本上不存在结构缺陷和无定形碳。

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