A multi-step treatment to effective purification of single-walled carbon nanotubes

被引：64

作者：

Montoro, Luciano Andrey ^{[1
]}

Rosolen, Jose Mauricio ^{[1
]}

机构：

[1] Univ Sao Paulo, Dept Quim, FFCLRP, BR-14040930 Ribeirao Preto, Brazil

来源：

CARBON | 2006年 / 44卷 / 15期

基金：

巴西圣保罗研究基金会;

关键词：

carbon nanotubes; chemical vapor deposition; transmission electron microscopy; thermal analysis;

D O I：

10.1016/j.carbon.2006.06.018

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An efficient procedure for the purification of single-walled carbon nanotubos (SWCNTs) based on chemical treatment and physical separation is proposed and studied step-by-step by high-resolution transmission electron microscopy, thermogravimetric analyses, and nitrogen adsorption techniques. Impure raw samples prepared by the are-discharge method containing SWCNTs, amorphous carbon, graphitic particles, carbon shells, metallic catalysts, and fullerenes were employed in this study. The procedure reported herein was used to remove each impurity of the sample in a step-by-step way. Gas-phase oxidation and the popular oxidation by heating in nitric acid were avoided to minimize damages to structure of the SWCNTs and to keep eventual chemical modifications of sample to a minimum. This new procedure is efficient and appropriate for the obtention of highly pure SWCNTs with minimal damage to the walls and minimal modification in the length of the tubes. The amount of each kind of impurity present in the raw material yielded in an arc-reactor was quantitatively estimated. Results of specific surface area and t-plots are also discussed. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：3293 / 3301

页数：9

共 32 条

[1] Charge transfer effects in acid treated single-wall carbon nanotubes [J].

Barros, EB ;

Souza, AG ;

Lemos, V ;

Mendes, J ;

Fagan, SB ;

Herbst, MH ;

Rosolen, JM ;

Luengo, CA ;

Huber, JG .

CARBON, 2005, 43 (12) :2495-2500

[2] COBALT-CATALYZED GROWTH OF CARBON NANOTUBES WITH SINGLE-ATOMIC-LAYERWALLS [J].

BETHUNE, DS ;

KIANG, CH ;

DEVRIES, MS ;

GORMAN, G ;

SAVOY, R ;

VAZQUEZ, J ;

BEYERS, R .

NATURE, 1993, 363 (6430) :605-607

[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] Intercalation and partial exfoliation of single-walled carbon nanotubes by nitric acid [J].

Bower, C ;

Kleinhammes, A ;

Wu, Y ;

Zhou, O .

CHEMICAL PHYSICS LETTERS, 1998, 288 (2-4) :481-486

[5] Complete elimination of metal catalysts from single wall carbon nanotubes [J].

Chattopadhyay, D ;

Galeska, I ;

Papadimitrakopoulos, F .

CARBON, 2002, 40 (07) :985-988

[6] Purification and characterization of single-wall carbon nanotubes [J].

Chiang, IW ;

Brinson, BE ;

Smalley, RE ;

Margrave, JL ;

Hauge, RH .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (06) :1157-1161

[7] Pore structure of raw and purified HiPco single-walled carbon nanotubes [J].

Cinke, M ;

Li, J ;

Chen, B ;

Cassell, A ;

Delzeit, L ;

Han, J ;

Meyyappan, M .

CHEMICAL PHYSICS LETTERS, 2002, 365 (1-2) :69-74

[8]

Dillon AC, 1999, ADV MATER, V11, P1354, DOI 10.1002/(SICI)1521-4095(199911)11:16<1354::AID-ADMA1354>3.0.CO

[9]

2-N

[10]

Du WF, 2002, NANO LETT, V2, P343, DOI [10.1021/nl010096a, 10.1021/n1010096a]

← 1 2 3 4 →