Abstract Bamboo-type carbon nanotubes (BCNTs) doped with nitrogen were produced by catalytic chemical vapor deposition from the effluent gases resulting from pyrolysis of polyamide 6.6. This polymer provides the carbon and nitrogen source and allows to obtain enough hydrogen during its decomposition for the carbon nanotubes (CNTs) production without prior catalyst reduction. The influence of pyrolysis and growth temperatures was studied in order to obtain the best quality CNTs. Transmission electron microscopy, X-ray diffraction, and Raman spectrometry showed that the best results were obtained at 900 °C pyrolysis temperature and 750 °C growth temperature, since the presence of amorphous carbon was negligible and the best crystalline degree was obtained. These BCNTs had from 5 to 20 layers and their arcs of bamboo-like compartments had from 3 to 15 layers. They had 20 nm in diameter and lengths typically on the order of micrometers.

中文翻译：

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聚酰胺热解气制氮掺杂竹型碳纳米管

摘要 掺氮的竹型碳纳米管 (BCNT) 是通过催化化学气相沉积从聚酰胺 6.6 热解产生的废气中制备的。这种聚合物提供碳源和氮源，并允许在其分解过程中获得足够的氢，用于碳纳米管 (CNT) 的生产，而无需事先进行催化剂还原。研究热解和生长温度的影响以获得最佳质量的碳纳米管。透射电子显微镜、X 射线衍射和拉曼光谱表明，在 900 °C 热解温度和 750 °C 生长温度下获得了最好的结果，因为无定形碳的存在可以忽略不计，获得了最好的结晶度。这些 BCNT 有 5 到 20 层，它们的竹状隔间弧有 3 到 15 层。它们的直径为 20 纳米，长度通常为微米级。