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| INTERACTION-MEDIATED GROWTH OF CARBON NANOTUBES ON ACICULAR SILICA-COATED α-Fe CATALYST BY CHEMICAL VAPOR DEPOSITION | |
| 引用本文： | QixiangWang GuoqingNing FeiWei GuohuaLuo. INTERACTION-MEDIATED GROWTH OF CARBON NANOTUBES ON ACICULAR SILICA-COATED α-Fe CATALYST BY CHEMICAL VAPOR DEPOSITION[J]. 中国颗粒学报, 2003, 1(6): 253-257. DOI: 10.1016/S1672-2515(07)60004-9 |
| 作者姓名： | QixiangWang GuoqingNing FeiWei GuohuaLuo |
| 作者单位： | DapartmentofChemicalEngineening,TsinghuaUniversity,Beijing100084,P.R.China |
| 基金项目： | 国家高技术研究发展计划(863计划)，国家高技术研究发展计划(863计划) |
| 摘 要： | Multi-walled carbon nanotubes (MWNTs) with 20 nm outer diameter were prepared by chemical vapor deposition of ethylene using ultrafine surface-modified acicular α-Fe catalyst particles.The growth mechanism of MWNTs on the larger catalyst particles are attributed to the interaction between the Fe nanoparticles with the surface-modified silica layer.This interaction-mediated growth mechanism is illustrated by studying the electronic,atomic and crystal properties of surface-modified catalysts and MWNTs products by characterization with X-ray diffraction (XRD),transmission electron microscopy (TEM),high resolution transmission electron microscopy (HRTEM),thermal gravimetric analysis (TGA) and Raman spectra. |
| 关 键 词： | 碳纳米管 多壁碳纳米管 MWNTs 表面修正 成长机制 纳米材料 |
| 收稿时间： | 2003-09-08 |
INTERACTION-MEDIATED GROWTH OF CARBON NANOTUBES ON ACICULAR SILICA-COATED α-Fe CATALYST BY CHEMICAL VAPOR DEPOSITION |
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| Qixiang Wang,Guoqing Ning,Fei Wei,Guohua Luo. INTERACTION-MEDIATED GROWTH OF CARBON NANOTUBES ON ACICULAR SILICA-COATED α-Fe CATALYST BY CHEMICAL VAPOR DEPOSITION[J]. China Particuology, 2003, 1(6): 253-257. DOI: 10.1016/S1672-2515(07)60004-9 | |
| Authors: | Qixiang Wang Guoqing Ning Fei Wei Guohua Luo |
| Affiliation: | 1. Facultad de Ingeniería Mecánica, Universidad Michoacana de San Nicolás de Hidalgo, Francisco J. Mujica s/n C.P. 58030, Morelia-Michoacán, México;2. Laboratoire de Génie Chimique, Université de Toulouse, CNRS/INPT-UPS, 4, allée Emile Monso BP 44362, 31030 Toulouse Cedex 4, France;3. Laboratorio de Ingeniería y Procesos Costeros, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Puerto de Abrigo S/N, Sisal, Yucatán 97355, México;4. Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Apdo, Postal 70-360, México D.F., 04510, México |
| Abstract: | Multi-walled carbon nanotubes (MWNTs) with 20 nm outer diameter were prepared by chemical vapor deposition of ethylene using ultrafine surface-modified acicular α-Fe catalyst particles. The growth mechanism of MWNTs on the larger catalyst particles are attributed to the interaction between the Fe nanoparticles with the surface-modified silica layer. This interaction-mediated growth mechanism is illustrated by studying the electronic, atomic and crystal properties of surface-modified catalysts and MWNTs products by characterization with X-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), thermal gravimetric analysis (TGA) and Raman spectra. |
| Keywords: | carbon nanotubes surface modification growth mechanism |
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