The degree of graphitization and diameter of cnts increased with elevated temperature , which showed that high temperature improved the catalysis of catalyst , and was attributed to uniform arrangement of atomic carbon , and hindered amorphous carbon 隨著生長溫度的升高,催化劑的活性提高,有利于碳的有序排列,生長的碳納米管直徑增大。氨氣對納米碳管的定向排列影響顯著,而氫氣、氮氣則無影響。