金属铈催化剂对单壁纳米碳管生长和结构的影响  

Influence of cerium metal as catalyst on the growth and structure of single-walled carbon nanotubes

作　　者：李振华[1] 王琴妹[2] 王淼[2] 

机构地区：[1]浙江大学力学系,杭州310027 [2]浙江大学物理系,杭州310027

出　　处：《物理学报》2005年第5期2158-2161,共4页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :60 2 710 0 9)资助的课题 .~~

摘　　要：研究了一种利用新型催化剂制备单壁纳米碳管 (SWNTs)的工艺方法 .将金属铈的氧化物 (CeO2 )与石墨粉按一定比例混合 ,填充到已打好孔的石墨棒中制成复合石墨电极 ,以其为阳极在高温氦电弧中实施电弧放电 .放电后的生成物经高分辨透射电子显微镜 (HRTEM)和拉曼光谱 (Raman)的观察及分析表明 :生成物中含有大量呈束状存在的单壁纳米碳管 ,管径均匀 ,平均直径为 1. 2 0— 1 .32nm .A method to prepare single-walled carbon nanotubes (SWNTs) by using a new type of catalyst is presented. With a certain proportion, cerium oxide (CeO2) and graphite powders were mixed. The mixture was then filled into the longitudinal holes of graphite sticks used as composite graphite electrode. With it as the anode, are discharge was carried out in He atmosphere. The resultant collected was observed and analyzed by using HRTEM and Raman spectroscopic analysis, indicating that a large amount of SWNTs with a uniform diameter were close-packed in bundles and the average diameter of SWNTs was about 1.20nm-1.32nm.

关 键 词：单壁纳米碳管 电弧放电 透射电子显微镜 拉曼光谱 薄膜工艺 

分 类 号：TB383[一般工业技术—材料科学与工程] O484.1[理学—固体物理]