文献类型：期刊文献

中文题名：气体流量对化学气相沉积法制备碳纳米管的影响

英文题名：Effects of Gas Flow Rate on the Preparation of Multi-walled Carbon Nanotubes Using Chemical Vapor Deposition

作者：姚运金[1];张素平[1];颜涌捷[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2006

卷号：23

期号：6

起止页码：536

中文期刊名：精细化工

外文期刊名：Fine Chemicals

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：上海市科委纳米专项基金(0352nm087)

语种：中文

中文关键词：多壁碳纳米管;气体流量;化学沉积法

外文关键词：MWNT; gas flow rate ; chemical vapor deposition

摘要：用化学气相沉积法裂解乙炔制备无序多壁碳纳米管,以Fe/SiO2粉状物作为催化剂,考察了气体流量等环境因素对碳纳米管生长的影响.通过TEM和SEM分析得出,当N2流量分别为200、500和800 mL/min时,碳纳米管的平均直径分别为20、36和82 nm,即碳纳米管的直径随着N2流量的升高而增大.当N2流量增加到800 mL/min时,还生成了大量的直径约为20～30 nm的碳纳米球.不通H2制备不出碳纳米管.
Muhi-walled carbon nanotubes（MWNT） were synthesized using a method based on chemical vapor deposition catalyzed by iron nanoparticles embedded in mesoporous silica. MWNT were deposited with different gas flow rate so as to systematically investigate the effect of environment on the growth behavior of MWNT. TEM and SEM results showed that the diameter of MWNT was 20 nm,36 nm and 82 nm respectively at N2 flow rate of 200 mL/min, 500 mL/min and 800 mL/min, i. e. , the average diameter increased with the N2 flow rate. When N2 flow rate increased to 800 mL/min, many carbon balls of 20 -30 nm in diameter were obtained. Moreover, MWNT could not be obtained without H2 flow.