Effects of Growth Parameters on the Morphology of CNTs/Cu Composite Powder Prepared Using Cr/Cu Catalyst by Chemical Vapor Deposition

摘要:

采用化学共沉淀法制备了Cr/Cu复合粉体催化剂，并用化学气象沉淀法（CVD）原位合成CNTs/Cu复合粉末。利用SEM, TEM和Raman光谱分别对其微观形貌和结构进行表征。结果表明：采用化学气相沉淀法，使用10 wt%Cr/Cu 的催化剂，在混合气体(Ar/H2/C2H4) 流量2450/300 mL/min下，于1073 K 温度生长30 min，可以得到优质、结晶良好的 CNTs/Cu 复合粉末

Abstract:

Based on the in-situ polymerization and chemical vapor deposition method (CVD), the synthesis method of CNTs/Cu composite powder was developed by Cr/Cu catalyst via CVD. The crystal phase and micro morphologies of the as-synthesized materials were characterized using scanning electron microscopy (SEM) and Raman spectrum as well as transmission electron microscopy (TEM), respectively. The results show that the superior quality and well-crystallized CNTs/Cu composite powder can be produced by CVD using 10wt% Cr/Cu catalyst at growth temperature as low as 1073 K, for growth time of 30 min and under mixture gas of H2/C2H4 with a flow rate of 2450/300 mL/min