Preparation and Characterization of Y-type Carbon Nanotubes by Using Anodized Alumina Oxide (AAO) Template  

作　　者：张静[1] 高泉涌[1] 杨勇[1] 

机构地区：[1]固体表面物理化学国家重点实验室厦门大学化学系,福建厦门361005

出　　处：《电化学》2003年第4期381-386,共6页Journal of Electrochemistry

基　　金：The authors are grateful for the financial support of this work from National Natural Science Foundation of China(No.20021002,29925310,29833090);Ministry of Science and Technology(2001CB610506).

摘　　要：　利用两步氧化法,通过对氧化直流电压进行周期性调制可制备出带有Y型孔道的氧化铝模板;然后以金属钴为催化剂,乙炔为碳源,通过CVD法制取得到具有规则Y型分支的碳纳米管阵列.已制备出的碳管分支角度在20°～120°的范围内.实验表明,两段分支所成的角度以及分支的长度与合成氧化铝模板的脉冲电压调节规律有关,短脉冲,高氧化电压有利于生长出的短而密集的分支构型.In this work, potential_modulation method was used in two_step anodization process to make an AAO template with Y_type nanochannels. Then Y_type carbon nanotubes with controlled length and branch angle were prepared in the template based on chemical vapor decomposion (CVD) method with Co particles as catalyst and C2H2 as carbon source. The Y_type nanotube branches exhibit the angle distribution ranging from 20° to 120°. The results demonstrated that the oxidation potential should be responsible for the angles and length of the branches. Short pulse and high oxidation potential will result in the short and dense nanotube branches. 

关 键 词：Y型分支 碳纳米管 氧化铝模板法 制备 表征 脉冲电压 电化学 

分 类 号：O646[理学—物理化学]