Aqueous Nanosilica Dispersants for Carbon Nanotube

被引：24

作者：

Matsuda, Takafumi ^{[1
]}

Minami, Daiki ^{[2
]}

Khoerunnisa, Fitri ^{[2
,3
]}

Sunaga, Motoo ^{[1
]}

Nakamura, Masahiro ^{[4
]}

Utsumi, Shigenori ^{[4
]}

Itoh, Tsutomu ^{[5
]}

Fujimori, Toshihiko ^{[1
]}

Hayashi, Takuya ^{[6
]}

Hattori, Yoshiyuki ^{[8
]}

Endo, Morinobu ^{[7
]}

Isobe, Hiroshi ^{[1
]}

Onodera, Hiroshi ^{[1
]}

Kaneko, Katsumi ^{[2
]}

机构：

[1] Fuji Chem Co Ltd, Ctr Tech, Nakatsugawa 5099132, Japan

[2] Shinshu Univ, Ctr Energy & Environm Sci, Nagano 3808553, Japan

[3] Indonesia Univ Educ, Dept Chem, Bandung 40154, Indonesia

[4] Tokyo Univ Sci, Dept Mech Syst Engn, Suwa, Chino 3910292, Japan

[5] Chiba Univ, Ctr Chem Anal, Inage Ku, Chiba 2638522, Japan

[6] Shinshu Univ, Fac Engn, Dept Elect Engn, Nagano 3808553, Japan

[7] Shinshu Univ, Inst Carbon Sci & Technol, Nagano 3808553, Japan

[8] Shinshu Univ, Fac Text Sci & Technol, Div Chem & Mat, Ueda, Nagano 3868567, Japan

来源：

LANGMUIR | 2015年 / 31卷 / 10期

关键词：

SURFACE; SOLUBILIZATION; NANOPARTICLES; ADSORPTION; FIBERS; SILICA; SIO2;

D O I：

10.1021/la504599b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanosilicas can disperse single-wall carbon nanotube (SWCNT) in aqueous solution efficiently; SWCNTs are stably dispersed in aqueous media for more than 6 months. The SWCNT dispersing solution with nanosilica can produce highly conductive transparent films which satisfy the requirements for application to touch panels. Even multiwall carbon nanotube can be dispersed easily in aqueous solution. The highly stable dispersion of SWCNTs in the presence of nanosilica is associated with charge transfer interaction which generates effective charges on the SWCNT particles, giving rise to electrostatic repulsion between the SWCNTs in the aqueous solution. Adhesion of charged nanosilicas on SWCNTs in the aqueous solution and a marked depression of the S-11 peak of optical absorption spectrum of the SWCNT with nanosilicas suggest charge transfer interaction of nanosilicas with SWCNT. Thus-formed isolated SWCNTs are fixed on the flexible three-dimensional silica jelly structure in the aqueous solution, leading to the uniform and stable dispersion of SWCNTs.

引用

页码：3194 / 3202

页数：9

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