PARAMETRIC STUDY FOR THE PREPARATION OF ALIGNED SINGLE-WALLED CARBON NANOTUBES BY ANODE-ARC DISCHARGE METHOD

查看全文 作　　者：[1]J.F.Dai;[1]Q.Wang;[1]W.X.Li;[1]Z.Q.Wei;[2]G.J.Xu

机构地区：[1]StateKeyLaboratoryofNewNonferrousMetalMaterials,DepartmentofPhysics,LanzhouUniversityofTechnology,Lanzhou730050,China;[2]StateKeyLaboratoryofNewNonferrousMetalMaterials,InstituteofMaterials,LanzhouUniversityofTechnology,Lanzhou730050,China

出　　处：《Acta Metallurgica Sinica(English Letters)》索引2005年第18卷第3期,共8页

基　　金：This work was supported by Natural Science Foundation of Gansu province;the Tackle Key Problems Foundation of Gansu pronince,China. 摘　　要：Well aligned quasi-straight single-walled carbon nanotubes (SWCNTs) and straight SWCNTs bundle have been prepared in large scale by anode-arc vaporization of gr aphite with metallic catalysts. Various parameters such as the catalyst preparat ion, the kinds and pressure of the buffer gases, the quantity of anode-arc curre nt intensity, and the method of purification have been examined. The influence o f these parameters on the deposited carbon yield is reported, together with obse rvations of the produced material. Improvement in synthetic techniques has resul ted in the optimal conditions for the production of large quantities of high qua lity SWCNTs in our semi-continuous synthesis method. The formation of carbon nan otubes (CNTs) was studied briefly in this paper. Owing to the magnetic pinching effect of arc current, the CNTs arrange in parallel lines along the arc current direction. 关键词：碳纳米管阳极电弧制备工艺催化剂半导体

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PARAMETRIC STUDY FOR THE PREPARATION OF ALIGNED SINGLE-WALLED CARBON NANOTUBES BY ANODE-ARC DISCHARGE METHOD

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