Growth of carbon nanotubes by the catalytic decomposition of methane over Fe-Mo/Al2O3 catalyst: effect of temperature on tube structure

被引：18

作者：

Song Jin-ling ^{[1
,2
]}

Wang Li ^{[1
,2
]}

Feng Shou-ai ^{[1
]}

Zhao Jiang-hong ^{[1
]}

Zhu Zhen-ping ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

NEW CARBON MATERIALS | 2009年 / 24卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Carbon nanotubes; Nanostructure; Vapor deposition; RAMAN-SCATTERING; ELECTRONIC-STRUCTURE; VIBRATIONAL-MODES; CVD SYNTHESIS; SINGLE; NANOPARTICLES; SPECTROSCOPY; COALESCENCE;

D O I：

10.1016/S1872-5805(08)60054-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of temperature, reaction time, and flow rate on the structure of carbon nanotubes (CNTs) were studied using catalytic chemical vapor deposition of methane over an Fe-Mo/Al2O3 catalyst. Results show that the temperature is a key parameter to control the wall thickness of the CNTs. Low temperature leads to the formation of multi-walled carbon nanotubes (MWCNTs) with wall thickness of 2-7 nm. Relatively high temperature is in favor of the growth of double-walled carbon nanotubes (DWCNTs), whereas high temperature promotes the generation of single-walled carbon nanotubes (SWCNTs). A further increase of temperature results in the generation of MWCNTs with a wall thickness of 3-15 nm and large carbon particles.

引用

页码：307 / 313

页数：7

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