Clean double-walled carbon nanotubes synthesized by CVD

被引：115

作者：

Li, WZ

Wen, JG

Sennett, M

Ren, ZF ^{[1
]}

机构：

[1] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA

[2] USA, Soldier & Biol Chem Command, Natick Soldier Ctr, Mat Sci Team, Natick, MA 01760 USA

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 368卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0009-2614(02)01862-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High quality double-walled carbon nanotubes (DWNTs) were synthesized by decomposition of methane over cobalt (Co) nanoparticles supported on porous MgO nanoparticles. The growth was significantly influenced by catalyst concentration and MgO type. Catalysts with 2.5-5 wt% Co loaded MgO (pore size: similar to4 nm) efficiently grow DWNTs with diameters of 2-4 nm, high graphitization, clean surfaces, and clean inside channels. The preliminary separation of DWNTs from MgO, Co and other carbonaceous nanoparticles has been carried out. Energy dispersive X-ray spectroscopy and X-ray diffraction were employed to analyze the chemical composition of the material's before and after purification. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：299 / 306

页数：8

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