In this study, Fe–Mo–MgO catalysts for the synthesis of carbon nanotubes (CNTs) were prepared using the combustion method and CNTs were synthesized through catalytic chemical vapor deposition. The combustion time was controlled to 0.5, 1, 2, 3, 5, 10, and 24 h in the catalyst preparation stage. The residual carbon contents after the combustion stage and the morphologies of synthesized CNTs were also analyzed. The diameter, yield, and crystallinity of the synthesized CNTs were found to remarkably vary according to the combustion time in the catalyst preparation process. The amount of residual carbon in the catalyst considerably affects the purity, crystallinity, diameter and its distribution, and wall number of CNTs. Based on the yield and crystallinity, CNTs synthesized using the catalyst with a combustion time of 3 h were determined to be the most appropriate for application in field emitters

在这项研究中，使用燃烧方法制备了用于碳纳米管合成的Fe–Mo–MgO催化剂，并通过催化化学气相沉积法合成了CNT。在催化剂制备阶段，将燃烧时间控制为0.5、1、2、3、5、10和24小时。还分析了燃烧阶段后的残余碳含量和合成的CNT的形态。发现合成的CNT的直径，产率和结晶度根据催化剂制备过程中的燃烧时间而显着变化。催化剂中残留的碳量会显着影响CNT的纯度，结晶度，直径及其分布和壁数。根据产量和结晶度，