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Enhanced growth of carbon nanotube bundles in a magnetically assisted fluidized bed chemical vapor deposition
Tian, Gui-Li1; Huang, Jia-Qi1; Li, Jun2; Zhang, Qiang1; Wei, Fei1
2016-11-01
发表期刊CARBON
ISSN0008-6223
卷号108期号:NOV页码:404-411
摘要

The efficient fabrication of carbon nanotube (CNT) bundles is the prerequisite for their bulk applications. However, the poor fluidization behavior of metal nanoparticle catalysts hinders the effective growth of high quality CNT bundles. Herein magnetically assisted fluidized bed (MFB) chemical vapor deposition was proposed for bulk growth of long CNT arrays. By introducing a uniform magnetic field into the fluidized bed reactor, the fluidization behavior of the ultrafine catalyst particles derived from FeMgAl layered double hydroxides (LDHs) was significantly improved with reduced bed pressure drop and increased bed expansion. Possibly, the magnetic LDH-catalyst flakes were arranged orderly in a magnetic field, which facilitated the steady and durative growth of CNT bundles. Compared with the CNT products grown in a routine fluidized bed reactor, the as-produced CNTs in the MFB reactor were with a much higher yield of 9.1 g(CNT)/g(catal), improved graphitic degree, increased length up to similar to 100 mu m, together with smaller diameters and narrower diameter distribution as well. A gradient-magnetically assisted fluidized bed reactor was also explored for facile fabrication of very long CNT bundles over 100 mu m. (C) 2016 Elsevier Ltd. All rights reserved.

文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.carbon.2016.07.036
收录类别SCI
语种英语
关键词[WOS]LAYERED DOUBLE HYDROXIDE ; CATALYST ; FIELD ; NANOPARTICLES ; ARRAYS ; NANOMATERIALS ; POWDERS ; FILMS ; VIBRATION ; PARTICLES
WOS研究方向Chemistry ; Materials Science
WOS类目Chemistry, Physical ; Materials Science, Multidisciplinary
项目资助者Natural Scientific Foundation of China(21306102 ; Ministry of Science and Technology of the People's Republic of China(2016YFA0200100 ; 21422604) ; 2016YFA0202500)
WOS记录号WOS:000382246300044
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21444
专题多相复杂系统国家重点实验室
作者单位1.Tsinghua Univ, Beijing Key Lab Green Chem React Engn & Technol, Dept Chem Engn, Beijing 100084, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Tian, Gui-Li,Huang, Jia-Qi,Li, Jun,et al. Enhanced growth of carbon nanotube bundles in a magnetically assisted fluidized bed chemical vapor deposition[J]. CARBON,2016,108(NOV):404-411.
APA Tian, Gui-Li,Huang, Jia-Qi,Li, Jun,Zhang, Qiang,&Wei, Fei.(2016).Enhanced growth of carbon nanotube bundles in a magnetically assisted fluidized bed chemical vapor deposition.CARBON,108(NOV),404-411.
MLA Tian, Gui-Li,et al."Enhanced growth of carbon nanotube bundles in a magnetically assisted fluidized bed chemical vapor deposition".CARBON 108.NOV(2016):404-411.
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