摘要
本文提出了一个唯象模型,用于解释常压生长条件下碳纳米管阵列高度分布变化的原因,分析的结果指出由于更多的碳源分子在催化剂的边缘吸附,一方面促进了碳纳米管的生长,另一方面也会带来更多的裂解产物在催化剂边缘吸附,使得边缘的催化剂受到的毒化作用增强,这两方面的共同作用导致了常压生长条件下碳纳米管阵列呈现出不同的形貌特征。
In this report,a phenomenological model was proposed to uncover the height distribution within carbon nanotube array grown under the atmospheric pressure,the model analysis shows that more carbon source,compare to that at array center,absorbed at array edge not only promoted the carbon nanotube growth,but also hindered the growth due to more pyrolysis caused the catalyst deactivation,which together leads to different carbon nanotube array profile.
作者
李儒
Ru Li(Key Laboratory of Nano-Devices and Applications,Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Ruoshui Road 398,Suzhou 215123,China;University of Chinese Academy of Sciences,Yuquan Road 19,Beijing 100049,China)
基金
受国家自然科学基金支持资助(21273269)。
关键词
碳纳米管阵列
高度分布
碳源
裂解产物
Carbon Nanotube Array
Height Distribution
Carbon Source
Pyrolysis