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题名: Rational control on floating catalysts for the growth of carbon nanotube assemblies: From vertically aligned carbon nanotube arrays to carbon nanotube films
作者: Chen, HY(陈宏源); Chen, MH(陈名海); Zhang, YY(张永毅); Li, QW(李清文)
通讯作者: Chen, MH (陈名海)
关键词: Carbon nanotube ; Floating catalyst ; Vertically aligned array ; Film ; Growth control
刊名: APPLIED SURFACE SCIENCE
发表日期: 2015
DOI: 10.1016/j.apsusc.2015.06.009
卷: 353, 页:11
收录类别: SCI
部门归属: 先进材料研究部
英文摘要: Floating catalyst chemical vapor deposition (FCCVD) has been widely used for the growth of various carbon nanotube (CNT) macrostructures, mainly including vertically aligned CNT (VACNT) arrays and none-woven CNT films. However, it is still unclear for the reason why these CNT macrostructures with largely different morphologies were received via the similar method. In this research, it revealed that the growth temperature largely affected the nucleation status of floating catalysts and thus controlled the morphologies of CNT macrostructures from VACNT arrays to none-woven CNT films. In low temperatures (below 800 degrees C), VACNTs were grown by bottom-up mechanism with several CNTs, but not one individual from bottom to up along the array height direction. Furthermore, VACNT arrays were only grown on some substrates that can induce iron atoms aggregating to catalyst particles with a suitable size. When increasing the growth temperature higher than 800 degrees C, more catalyst particles were nucleated in the gas flow, which induced the formation of none-woven CNT films composed of thin CNTs (single-walled CNTs and double-walled CNTs). This research was significative for understanding CNT growth mechanism via FCCVD process and the synthesis of different CNT macrostructures by this strategy. (C) 2015 Elsevier B.V. All rights reserved.
语种: 英语
JCR小类分区: 二区
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内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/3287
Appears in Collections:先进材料研究部_李清文团队_期刊论文

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Recommended Citation:
Chen, HY,Chen, MH,Zhang, YY,et al. Rational control on floating catalysts for the growth of carbon nanotube assemblies: From vertically aligned carbon nanotube arrays to carbon nanotube films[J]. APPLIED SURFACE SCIENCE,2015,353:11.
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