Selective purification of multiwalled carbon nanotubes by dielectrophoresis within a large array

被引：17
作者：
Liu, Xianming
Spencer, John L.
Kaiser, Alan B.
Arnold, W. Mike
机构：
[1] Ind Res Ltd, Gracefield Res Ctr, Lower Hutt, New Zealand
[2] Victoria Univ Wellington, SCPS, MacDiarmid Inst Adv Mat & Nanotechnol, Wellington, New Zealand
来源：
CURRENT APPLIED PHYSICS | 2006年 / 6卷 / 03期
关键词：
dielectrophoresis; carbon nanotubes; purification; Raman spectroscopy;
D O I：
10.1016/j.cap.2005.11.034
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A prototype device was made to scale up a method for the wet purification of multiwalled carbon nanotubes (MWCNTs). The device consists of a fluid-flow chamber, which facilitates the flow of MWCNT suspensions across a large array of interdigitated electrodes (IDEs). A radio-frequency voltage provides the electric field for dielectrophoresis. Electric parameters of the array were monitored during the running of the process and were observed to reflect the increase of conductance caused by accumulation of MWCNTs. SEM and Raman spectroscopy showed a decrease in the D-band to G-band ratio for the material accumulated on the array. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：427 / 431
页数：5
相关论文
共 18 条
[1]   Structure of carbon fibres found on carbon arc anodes. [J].
Abrahamson, J ;
Wiles, PG ;
Rhoades, BL .
CARBON, 1999, 37 (11) :1873-1874
[2]  
ARNOLD WM, 2002, P 9 EL NZ C ENZCON 0, P1
[3]   Purification and size-selection of carbon nanotubes [J].
Bonard, JM ;
Stora, T ;
Salvetat, JP ;
Maier, F ;
Stockli, T ;
Duschl, C ;
Forro, L ;
deHeer, WA ;
Chatelain, A .
ADVANCED MATERIALS, 1997, 9 (10) :827-&
[4]   Aligning single-wall carbon nanotubes with an alternating-current electric field [J].
Chen, XQ ;
Saito, T ;
Yamada, H ;
Matsushige, K .
APPLIED PHYSICS LETTERS, 2001, 78 (23) :3714-3716
[5]   Purification and opening of carbon nanotubes via bromination [J].
Chen, YJ ;
Green, MLH ;
Griffin, JL ;
Hammer, J ;
Lago, RM ;
Tsang, SC .
ADVANCED MATERIALS, 1996, 8 (12) :1012-1015
[6]  
Dresselhaus M. S., 1996, SCI FULLERENES CARBO
[7]   PURIFICATION OF NANOTUBES [J].
EBBESEN, TW ;
AJAYAN, PM ;
HIURA, H ;
TANIGAKI, K .
NATURE, 1994, 367 (6463) :519-519
[8]   HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].
IIJIMA, S .
NATURE, 1991, 354 (6348) :56-58
[9]   Raman characterization of aligned carbon nanotubes produced by thermal decomposition of hydrocarbon vapor [J].
Li, WZ ;
Zhang, H ;
Wang, CY ;
Zhang, Y ;
Xu, LW ;
Zhu, K ;
Xie, SS .
APPLIED PHYSICS LETTERS, 1997, 70 (20) :2684-2686
[10]  
LIU X, 2002, C EL INS DIEL PHEN I, P31
12