A method for the coating of silica spheres with an ultrathin layer of pristine single-walled carbon nanotubes

Tsuyohiko Fujigaya, Jongtae Yoo, Naotoshi Nakashima

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

We describe a method to fabricate silica gel particles coated with a monolayer of pristine single-walled carbon nanotubes (SWCNTs). SWCNTs dissolved in 1-methyl-2-pyrrolidinone (NMP) are mixed with amino-functionalized silica gels having different diameters. Strong interaction between the amino group and the SWCNT surfaces induces the adsorption of the SWCNTs on the silica, while the stable solvation in NMP hampers further adsorption of the tubes. This approach enables the production of a homogeneous, nondestructive and high-yield coating of the SWCNTs onto the silica surfaces, especially for larger sphere with a diameter over 1 μm. The density and bundling degree of the SWCNTs on the silica gel surfaces are finely controlled by simply changing the ratios of the SWCNTs to the silica gels as well as the SWCNT concentrations. We also describe the coating of the silica gels with metallic SWCNTs. The SWCNT-coated silica gels are useful for a wide range of materials, such as the stationary phase for liquid chromatography and catalyst supporting materials.

Original languageEnglish
Pages (from-to)468-476
Number of pages9
JournalCarbon
Volume49
Issue number2
DOIs
Publication statusPublished - Feb 1 2011

Fingerprint

Single-walled carbon nanotubes (SWCN)
Silicon Dioxide
Silica
Silica Gel
Silica gel
Coatings
1-methyl-2-pyrrolidinone
Adsorption
Liquid chromatography
Solvation
Monolayers
Catalysts

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

A method for the coating of silica spheres with an ultrathin layer of pristine single-walled carbon nanotubes. / Fujigaya, Tsuyohiko; Yoo, Jongtae; Nakashima, Naotoshi.

In: Carbon, Vol. 49, No. 2, 01.02.2011, p. 468-476.

Research output: Contribution to journalArticle

@article{e29b4c1887d74f6b8d2d0c48ca375e70,
title = "A method for the coating of silica spheres with an ultrathin layer of pristine single-walled carbon nanotubes",
abstract = "We describe a method to fabricate silica gel particles coated with a monolayer of pristine single-walled carbon nanotubes (SWCNTs). SWCNTs dissolved in 1-methyl-2-pyrrolidinone (NMP) are mixed with amino-functionalized silica gels having different diameters. Strong interaction between the amino group and the SWCNT surfaces induces the adsorption of the SWCNTs on the silica, while the stable solvation in NMP hampers further adsorption of the tubes. This approach enables the production of a homogeneous, nondestructive and high-yield coating of the SWCNTs onto the silica surfaces, especially for larger sphere with a diameter over 1 μm. The density and bundling degree of the SWCNTs on the silica gel surfaces are finely controlled by simply changing the ratios of the SWCNTs to the silica gels as well as the SWCNT concentrations. We also describe the coating of the silica gels with metallic SWCNTs. The SWCNT-coated silica gels are useful for a wide range of materials, such as the stationary phase for liquid chromatography and catalyst supporting materials.",
author = "Tsuyohiko Fujigaya and Jongtae Yoo and Naotoshi Nakashima",
year = "2011",
month = "2",
day = "1",
doi = "10.1016/j.carbon.2010.09.043",
language = "English",
volume = "49",
pages = "468--476",
journal = "Carbon",
issn = "0008-6223",
publisher = "Elsevier Limited",
number = "2",

}

TY - JOUR

T1 - A method for the coating of silica spheres with an ultrathin layer of pristine single-walled carbon nanotubes

AU - Fujigaya, Tsuyohiko

AU - Yoo, Jongtae

AU - Nakashima, Naotoshi

PY - 2011/2/1

Y1 - 2011/2/1

N2 - We describe a method to fabricate silica gel particles coated with a monolayer of pristine single-walled carbon nanotubes (SWCNTs). SWCNTs dissolved in 1-methyl-2-pyrrolidinone (NMP) are mixed with amino-functionalized silica gels having different diameters. Strong interaction between the amino group and the SWCNT surfaces induces the adsorption of the SWCNTs on the silica, while the stable solvation in NMP hampers further adsorption of the tubes. This approach enables the production of a homogeneous, nondestructive and high-yield coating of the SWCNTs onto the silica surfaces, especially for larger sphere with a diameter over 1 μm. The density and bundling degree of the SWCNTs on the silica gel surfaces are finely controlled by simply changing the ratios of the SWCNTs to the silica gels as well as the SWCNT concentrations. We also describe the coating of the silica gels with metallic SWCNTs. The SWCNT-coated silica gels are useful for a wide range of materials, such as the stationary phase for liquid chromatography and catalyst supporting materials.

AB - We describe a method to fabricate silica gel particles coated with a monolayer of pristine single-walled carbon nanotubes (SWCNTs). SWCNTs dissolved in 1-methyl-2-pyrrolidinone (NMP) are mixed with amino-functionalized silica gels having different diameters. Strong interaction between the amino group and the SWCNT surfaces induces the adsorption of the SWCNTs on the silica, while the stable solvation in NMP hampers further adsorption of the tubes. This approach enables the production of a homogeneous, nondestructive and high-yield coating of the SWCNTs onto the silica surfaces, especially for larger sphere with a diameter over 1 μm. The density and bundling degree of the SWCNTs on the silica gel surfaces are finely controlled by simply changing the ratios of the SWCNTs to the silica gels as well as the SWCNT concentrations. We also describe the coating of the silica gels with metallic SWCNTs. The SWCNT-coated silica gels are useful for a wide range of materials, such as the stationary phase for liquid chromatography and catalyst supporting materials.

UR - http://www.scopus.com/inward/record.url?scp=78650027176&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78650027176&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2010.09.043

DO - 10.1016/j.carbon.2010.09.043

M3 - Article

AN - SCOPUS:78650027176

VL - 49

SP - 468

EP - 476

JO - Carbon

JF - Carbon

SN - 0008-6223

IS - 2

ER -