Efficient synthesis of aligned nitrogen-doped carbon nanotubes in a fluidized-bed reactor

IMR OpenIR

	Efficient synthesis of aligned nitrogen-doped carbon nanotubes in a fluidized-bed reactor
	J. Q. Huang; M. Q. Zhao; Q. Zhang; J. Q. Nie; L. D. Yao; D. S. Su; F. Wei
	2012
发表期刊	Catalysis Today
ISSN	0920-5861
卷号	186 期号:1 页码:83-92
摘要	Vertically aligned nitrogen-doped carbon nanotubes (NCNTs) with uniform size distribution, large aspect ratio, good orientation, and high purity were employed as novel platforms to understand the dopant-induced perturbations and found widely applications in catalysis, electrochemistry, energy conversion and storages. However, the efficient way to synthesis CNTs with ordered alignment in large scale is still a challenge. We reported NCNTs were efficiently synthesized on a lamellar vermiculite catalyst in a fluidized-bed reactor. The catalysts and as-grown products can maintain good fluidization state during the whole growth process. The intercalated growth mode prevented the NCNT arrays from the disturbance of particle collisions in the fluidized bed. With the introduction of nitrogen precursor, N atoms were doped into CNTs and formed NCNTs with bamboo-like structure. The content of N doping can be tuned in a range of 1.55-4.23% and the distribution of N-containing functional groups can also be modified by changing either the growth temperatures or nitrogen sources (NH3, 1,2-ethylenediamine, and pyridine). We explored the growth temperature ranging from 650 to 800 degrees C. High growth temperature led to a high NCNT yield (2.95 g(NCNT)/g(cat) h), large NCNT diameter (about 20 nm), and high graphitization degree. This provides a potential way for the controllable mass production of aligned NCNTs for applications in catalysis, materials science, energy conversion and storage, etc. (C) 2011 Elsevier B. V. All rights reserved.
部门归属	[huang, jia-qi; zhao, meng-qiang; zhang, qiang; nie, jing-qi; wei, fei] tsinghua univ, dept chem engn, beijing key lab green chem react engn & technol, beijing 100084, peoples r china. [zhang, qiang; yao, li-de; su, dang sheng] max planck soc, fritz haber inst, dept inorgan chem, d-14195 berlin, germany. [su, dang sheng] chinese acad sci, inst met res, shenyang natl lab mat sci, catalysis & mat div, shenyang 110016, peoples r china.;wei, f (reprint author), tsinghua univ, dept chem engn, beijing key lab green chem react engn & technol, beijing 100084, peoples r china.;wf-dce@tsinghua.edu.cn
关键词	Carbon Nanotubes Fluidized Bed Doped Materials Chemical Vapor Deposition Nanotechnology Chemical-vapor-deposition Oxygen Reduction Reaction Mass-production Catalytic Decomposition Functional-groups Arrays Growth Cvd Nanofibers Oxidation
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60011
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Q. Huang,M. Q. Zhao,Q. Zhang,et al. Efficient synthesis of aligned nitrogen-doped carbon nanotubes in a fluidized-bed reactor[J]. Catalysis Today,2012,186(1):83-92.
APA	J. Q. Huang.,M. Q. Zhao.,Q. Zhang.,J. Q. Nie.,L. D. Yao.,...&F. Wei.(2012).Efficient synthesis of aligned nitrogen-doped carbon nanotubes in a fluidized-bed reactor.Catalysis Today,186(1),83-92.
MLA	J. Q. Huang,et al."Efficient synthesis of aligned nitrogen-doped carbon nanotubes in a fluidized-bed reactor".Catalysis Today 186.1(2012):83-92.