Knowledge Management System Of Institute of metal research,CAS
In Situ TEM Observations on the Sulfur-Assisted Catalytic Growth of Single-Wall Carbon Nanotubes | |
L. L. Zhang; P. X. Hou; S. S. Li; C. Shi; H. T. Gong; C. Liu; H. M. Cheng | |
2014 | |
Source Publication | Journal of Physical Chemistry Letters
![]() |
ISSN | 1948-7185 |
Volume | 5Issue:8Pages:1427-1432 |
Abstract | The effect of sulfur on the catalytic nucleation and growth of single-wall carbon nanotubes (SWCNTs) from an iron catalyst was investigated in situ by transmission electron microscopy (TEM). The catalyst precursor of ferrocene and growth promoter of sulfur were selectively loaded inside of the hollow core of multiwall CNTs with open ends, which served as a nanoreactor powered by applying a voltage inside of the chamber of a TEM. It was found that a SWCNT nucleated and grew perpendicularly from a region of the catalyst nanoparticle surface, instead of the normal tangential growth that occurs with no sulfur addition. Our in situ TEM observation combined with CVD growth studies suggests that sulfur functions to promote the nucleation and growth of SWCNTs by forming inhomogeneous local active sites and modifying the interface bonding between catalysts and precipitated graphitic layers, so that carbon caps can be lifted off from the catalyst particle. |
description.department | [zhang, lili ; hou, peng-xiang ; li, shisheng ; shi, chao ; gong, hong-tao ; liu, chang ; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; liu, c (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; cliu@imr.ac.cn |
Keyword | Chemical-vapor-deposition Nanoparticles Nucleation Mechanism Dynamics Surface Fibers Phase |
URL | 查看原文 |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.imr.ac.cn/handle/321006/72963 |
Collection | 中国科学院金属研究所 |
Recommended Citation GB/T 7714 | L. L. Zhang,P. X. Hou,S. S. Li,et al. In Situ TEM Observations on the Sulfur-Assisted Catalytic Growth of Single-Wall Carbon Nanotubes[J]. Journal of Physical Chemistry Letters,2014,5(8):1427-1432. |
APA | L. L. Zhang.,P. X. Hou.,S. S. Li.,C. Shi.,H. T. Gong.,...&H. M. Cheng.(2014).In Situ TEM Observations on the Sulfur-Assisted Catalytic Growth of Single-Wall Carbon Nanotubes.Journal of Physical Chemistry Letters,5(8),1427-1432. |
MLA | L. L. Zhang,et al."In Situ TEM Observations on the Sulfur-Assisted Catalytic Growth of Single-Wall Carbon Nanotubes".Journal of Physical Chemistry Letters 5.8(2014):1427-1432. |
Files in This Item: | There are no files associated with this item. |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment