Catalyst effects of fabrication of carbon nanotubes synthesized by chemical vapor deposition

被引：14

作者：

Tian, F. ^{[1
]}

Li, H. P. ^{[1
]}

Zhao, N. Q. ^{[1
]}

He, C. N. ^{[1
]}

机构：

[1] Acad Mil Med Sci, Inst Med Equipment, Tianjin 300161, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2009年 / 115卷 / 2-3期

关键词：

Fullerness; Nanostructures; Chemical vapor deposition (CVD); Thermogravimetric analysis (TGA); PURIFICATION; ALUMINUM;

D O I：

10.1016/j.matchemphys.2009.01.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Catalytic effects of the fabrication of carbon nanotubes (CNTs) by chemical vapor deposition of methane were investigated by thermogravimetric analysis. More specifically, the total yield and thermal stability characteristics of the product were examined with respect to physicochemical characteristics of the catalyst. Three kinds of Ni/Al catalysts with 5wt%, 10wt% and 15wt% Ni, respectively were employed to synthesize CNTs. It was determined that an optimal Ni content of the catalyst resulted in maximum yield and most stable product. With increasing the Ni content, the CNT yield increased but they became less stable during heat treatment in air. According to transmission electron microscopy observations, the defect sites along the walls and at the ends of the raw CNTs facilitated the thermal oxidative destruction of the CNTs. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：493 / 495

页数：3

共 13 条

[1] Thermogravimetric analysis of the oxidation of multiwalled carbon nanotubes: Evidence for the role of defect sites in carbon nanotube chemistry [J].

Bom, D ;

Andrews, R ;

Jacques, D ;

Anthony, J ;

Chen, BL ;

Meier, MS ;

Selegue, JP .

NANO LETTERS, 2002, 2 (06) :615-619

[2] Purification of multi-walled carbon nanotubes by microwave digestion method [J].

Chen, CM ;

Chen, M ;

Leu, FC ;

Hsu, SY ;

Wang, SC ;

Shi, SC ;

Chen, CF .

[3] Purification of single-walled carbon nanotubes synthesized by the hydrogen arc-discharge method [J].

Hou, PX ;

Liu, C ;

Tong, Y ;

Xu, ST ;

Liu, M ;

Cheng, HM .

JOURNAL OF MATERIALS RESEARCH, 2001, 16 (09) :2526-2529

[4] HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].

IIJIMA, S .

NATURE, 1991, 354 (6348) :56-58

[5] Research on the combustion properties of propellants with low content of nano metal powders [J].

Jiang, Z ;

Li, SF ;

Zhao, FQ ;

Liu, ZR ;

Yin, CM ;

Luo, Y ;

Li, SW .

PROPELLANTS EXPLOSIVES PYROTECHNICS, 2006, 31 (02) :139-147

[6] EFFECT OF SURFACE RECONSTRUCTION ON STABILITY AND REACTIVITY OF SI CLUSTERS [J].

KAXIRAS, E .

PHYSICAL REVIEW LETTERS, 1990, 64 (05) :551-554

[7] NANOCAPILLARITY IN FULLERENE TUBULES [J].

PEDERSON, MR ;

BROUGHTON, JQ .

PHYSICAL REVIEW LETTERS, 1992, 69 (18) :2689-2692

[8] Large-scale purification of single-wall carbon nanotubes: process, product, and characterization [J].

Rinzler, AG ;

Liu, J ;

Dai, H ;

Nikolaev, P ;

Huffman, CB ;

Rodriguez-Macias, FJ ;

Boul, PJ ;

Lu, AH ;

Heymann, D ;

Colbert, DT ;

Lee, RS ;

Fischer, JE ;

Rao, AM ;

Eklund, PC ;

Smalley, RE .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1998, 67 (01) :29-37

[9] Ignition of single nickel-coated aluminum particles [J].

Shafirovich, E ;

Bocanegra, PE ;

Chauveau, C ;

Gökalp, I ;

Goldshleger, U ;

Rosenband, V ;

Gany, A .

PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2005, 30 :2055-2062

[10] Thermal explosion in Ni-Al system: Influence of reaction medium microstructure [J].

Thiers, L ;

Mukasyan, AS ;

Varma, A .

COMBUSTION AND FLAME, 2002, 131 (1-2) :198-209

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