Effect of organic additives in catalyst preparation on the growth of single-wall carbon nanotubes prepared by catalyst-assisted chemical vapour deposition

被引:11
作者
Shen, LH [1 ]
Zhang, XB [1 ]
Li, Y [1 ]
Yang, XF [1 ]
Luo, JH [1 ]
Xu, GL [1 ]
机构
[1] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China
关键词
D O I
10.1088/0957-4484/15/3/018
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The effect of organic additives, including citric acid, PEG (2000) and PEG (200). on the yield and quality of single-wall carbon nanotubes (SWNTs) synthesized by a Fe-Mo catalyst dispersed on an alumina matrix prepared by the sol-gel process in assisted chemical vapour deposition (CVD) has been investigated by transmission electron microscopy (TEM), thermo-gravimetric analysis (TGA) and Raman spectroscopy. Different morphologies of catalyst including big flakes, spherical particles and porous supporting materials were obtained using citric acid, PEG (2000) and PEG (200) as dispersant., respectively. SWNT yields of 10 wt%, 16 wt% and 33 wt% were obtained using citric acid, PEG (2000) and PEG (200) as the dispersants, respectively, which implies that the PEG (200) is the most effective at improving the yield of SWNTs due to the effect of additives on the specific surface area of the catalyst. The as-grown SWNTs are mostly in large bundles with diameters of 0.5-2 nm, but in some cases, isolated tubes with much larger diameters can also be found. Finally a preliminary explanation for the increased SWNT yield using PEG (200) is presented.
引用
收藏
页码:337 / 340
页数:4
相关论文
共 14 条
[1]   Resonant Raman study of the structure and electronic properties of single-wall carbon nanotubes [J].
Alvarez, L ;
Righi, A ;
Guillard, T ;
Rols, S ;
Anglaret, E ;
Laplaze, D ;
Sauvajol, JL .
CHEMICAL PHYSICS LETTERS, 2000, 316 (3-4) :186-190
[2]   Large-scale synthesis of single-wall carbon nanotubes by catalytic chemical vapor deposition (CCVD) method [J].
Colomer, JF ;
Stephan, C ;
Lefrant, S ;
Van Tendeloo, G ;
Willems, I ;
Kónya, Z ;
Fonseca, A ;
Laurent, C ;
Nagy, JB .
CHEMICAL PHYSICS LETTERS, 2000, 317 (1-2) :83-89
[3]   Single-wall nanotubes produced by metal-catalyzed disproportionation of carbon monoxide [J].
Dal, HJ ;
Rinzler, AG ;
Nikolaev, P ;
Thess, A ;
Colbert, DT ;
Smalley, RE .
CHEMICAL PHYSICS LETTERS, 1996, 260 (3-4) :471-475
[4]   Nanotechnology - New tricks with nanotubes [J].
Dresselhaus, MS .
NATURE, 1998, 391 (6662) :19-20
[5]   HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].
IIJIMA, S .
NATURE, 1991, 354 (6348) :56-58
[6]   Large-scale production of single-walled carbon nanotubes by the electric-arc technique [J].
Journet, C ;
Maser, WK ;
Bernier, P ;
Loiseau, A ;
delaChapelle, ML ;
Lefrant, S ;
Deniard, P ;
Lee, R ;
Fischer, JE .
NATURE, 1997, 388 (6644) :756-758
[7]   Controlled production of single-wall carbon nanotubes by catalytic decomposition of CO on bimetallic Co-Mo catalysts [J].
Kitiyanan, B ;
Alvarez, WE ;
Harwell, JH ;
Resasco, DE .
CHEMICAL PHYSICS LETTERS, 2000, 317 (3-5) :497-503
[8]   Bulk production of multi-wall carbon nanotube bundles on sol-gel prepared catalyst [J].
Ning, YS ;
Zhang, XB ;
Wang, YW ;
Sun, YL ;
Shen, LH ;
Yang, XF ;
Van Tendeloo, G .
CHEMICAL PHYSICS LETTERS, 2002, 366 (5-6) :555-560
[9]   Carbon nanotubes grown in situ by a novel catalytic method [J].
Peigney, A ;
Laurent, C ;
Dobigeon, F ;
Rousset, A .
JOURNAL OF MATERIALS RESEARCH, 1997, 12 (03) :613-615
[10]   RADIAL DEFORMATION OF CARBON NANOTUBES BY VAN-DER-WAALS FORCES [J].
RUOFF, RS ;
TERSOFF, J ;
LORENTS, DC ;
SUBRAMONEY, S ;
CHAN, B .
NATURE, 1993, 364 (6437) :514-516