Dispersing single-walled carbon nanotubes with surfactants: A small angle neutron scattering study

被引：278

作者：

Wang, H ^{[1
]}

Zhou, W

Ho, DL

Winey, KI

Fischer, JE

Glinka, CJ

Hobbie, EK

机构：

[1] Michigan Technol Univ, Dept Mat Sci & Engn, Houghton, MI 49931 USA

[2] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[3] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

来源：

NANO LETTERS | 2004年 / 4卷 / 09期

关键词：

D O I：

10.1021/nl048969z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have investigated the dispersion of single-walled carbon nanotubes (SWNTs) in heavy water with the surfactant octyl-phenol-ethoxy late (Triton X-100) using small angle neutron scattering. The results indicate an optimal surfactant concentration for dispersion, which we suggest results from competition between maximization of surfactant adsorption onto SWNT surfaces and a depletion interaction between SWNT bundles mediated by surfactant micelles. The latter effect drives SWNT reaggregation above a critical volume fraction of micelles. These behaviors could be general in dispersing SWNTs using amphiphilic surfactant. The data also reveal significant incoherent scattering from hydrogen in SWNTs, most likely due to acid and water residues from the purification process.

引用

页码：1789 / 1793

页数：5

共 35 条

[1] ON INTERACTION BETWEEN 2 BODIES IMMERSED IN A SOLUTION OF MACROMOLECULES [J].

ASAKURA, S ;

OOSAWA, F .

JOURNAL OF CHEMICAL PHYSICS, 1954, 22 (07) :1255-1256

[2] Functionalization of carbon nanotubes by electrochemical reduction of aryl diazonium salts: A bucky paper electrode [J].

Bahr, JL ;

Yang, JP ;

Kosynkin, DV ;

Bronikowski, MJ ;

Smalley, RE ;

Tour, JM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (27) :6536-6542

[3] Stabilization of individual carbon nanotubes in aqueous solutions [J].

Bandyopadhyaya, R ;

Nativ-Roth, E ;

Regev, O ;

Yerushalmi-Rozen, R .

NANO LETTERS, 2002, 2 (01) :25-28

[4] Carbon nanotubes - the route toward applications [J].

Baughman, RH ;

Zakhidov, AA ;

de Heer, WA .

SCIENCE, 2002, 297 (5582) :787-792

[5] Solution properties of single-walled carbon nanotubes [J].

Chen, J ;

Hamon, MA ;

Hu, H ;

Chen, YS ;

Rao, AM ;

Eklund, PC ;

Haddon, RC .

SCIENCE, 1998, 282 (5386) :95-98

[6] Noncovalent sidewall functionalization of single-walled carbon nanotubes for protein immobilization [J].

Chen, RJ ;

Zhang, YG ;

Wang, DW ;

Dai, HJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (16) :3838-3839

[7] Phase Behavior and rheology of SWNTs in superacids [J].

Davis, VA ;

Ericson, LM ;

Parra-Vasquez, ANG ;

Fan, H ;

Wang, YH ;

Prieto, V ;

Longoria, JA ;

Ramesh, S ;

Saini, RK ;

Kittrell, C ;

Billups, WE ;

Adams, WW ;

Hauge, RH ;

Smalley, RE ;

Pasquali, M .

MACROMOLECULES, 2004, 37 (01) :154-160

[8] Effect of chemical functionalization on the mechanical properties of carbon nanotubes [J].

Garg, A ;

Sinnott, SB .

CHEMICAL PHYSICS LETTERS, 1998, 295 (04) :273-278

[9] SMALL-ANGLE NEUTRON-SCATTERING STUDY OF MICELLAR STRUCTURE AND INTERPARTICLE INTERACTIONS IN TRITON X-100 SOLUTIONS [J].

GOYAL, PS ;

MENON, SVG ;

DASANNACHARYA, BA ;

THIYAGARAJAN, P .

PHYSICAL REVIEW E, 1995, 51 (03) :2308-2315

[10] Determination of the acidic sites of purified single-walled carbon nanotubes by acid-base titration [J].

Hu, H ;

Bhowmik, P ;

Zhao, B ;

Hamon, MA ;

Itkis, ME ;

Haddon, RC .

CHEMICAL PHYSICS LETTERS, 2001, 345 (1-2) :25-28

← 1 2 3 4 →