初始温度及碳源对碳纳米管气相爆轰法合成的影响
发布时间：2018-07-24 09:40
【摘要】：改变初始温度以及分别使用甲烷和乙炔气体作碳源时气相爆轰合成碳纳米管,研究了初始温度与不同碳源对碳纳米管的影响。利用X射线衍射(XRD)、透射电镜(TEM)、拉曼(Raman)光谱等对碳纳米管进行表征。结果表明,随着初始温度的升高,所合成的碳纳米管的产量减少且石墨化程度降低,但管壁会变得光滑且管径有所增加。当使用乙炔时,所合成的产物中没有碳纳米管,而是合成了石墨化程度较高的无定形碳,随着催化剂量的增加,产物中碳包覆颗粒增多且包覆层清晰可见,但存在结构缺陷。当初始温度在110~130℃时,使用甲烷气体运用气相爆轰的手段是合成碳纳米管的较佳方案。
[Abstract]:The effects of initial temperature and different carbon sources on carbon nanotubes were investigated by gas phase detonation with methane and acetylene as carbon source. Carbon nanotubes were characterized by X-ray diffraction (XRD),) transmission electron microscopy (TEM),) Raman (Raman) spectroscopy. The results show that with the increase of initial temperature, the yield and graphitization degree of the synthesized CNTs decrease, but the wall becomes smooth and the diameter increases. When acetylene was used, no carbon nanotubes were synthesized, but amorphous carbon with higher graphitization degree was synthesized. With the increase of catalyst amount, the carbon coating particles in the product increased and the coating layer was clearly visible, but there were structural defects. When the initial temperature is 110 ~ 130 鈩，
本文编号：2140969
[Abstract]:The effects of initial temperature and different carbon sources on carbon nanotubes were investigated by gas phase detonation with methane and acetylene as carbon source. Carbon nanotubes were characterized by X-ray diffraction (XRD),) transmission electron microscopy (TEM),) Raman (Raman) spectroscopy. The results show that with the increase of initial temperature, the yield and graphitization degree of the synthesized CNTs decrease, but the wall becomes smooth and the diameter increases. When acetylene was used, no carbon nanotubes were synthesized, but amorphous carbon with higher graphitization degree was synthesized. With the increase of catalyst amount, the carbon coating particles in the product increased and the coating layer was clearly visible, but there were structural defects. When the initial temperature is 110 ~ 130 鈩，
本文编号：2140969
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