FA EN

banner zamini

Carbon Nanotubes

 

single-walled nanotubes (SWNT) have a diameter of close to 1 nanometer, with a tube length that can be many millions of times longer. The structure of a SWNT can be conceptualized by wrapping a one-atom-thick layer of graphite called graphene into a seamless cylinder.
Single-walled nanotubes are an important variety of carbon nanotube because they exhibit electric properties that are not shared by the multi-walled carbon nanotube (MWNT) variants. In particular, their band gap can vary from zero to about 2 eV and their electrical conductivity can show metallic or semiconducting behavior, whereas MWNTs are zero-gap metals. Single-walled nanotubes are the most likely candidate for miniaturizing electronics beyond the micro electromechanical scale currently used in electronics. The most basic building block of these systems is the electric wire, and SWNTs can be excellent conductors.

 

 

Products

 Property Purity OD Length SSA EC Tap Density -OH Content -COOH Content
Unit       Wt%            nm    Micron  m2/g  s/cm       g/cm3              Wt%              Wt%
Method TGA & TEM HRTEM,Raman TEM BET XPS & Titration XPS & Titration

Single-walled carbon nanotube

SWCNT

>90

              1-2

10-30

>380

>100

0.14

-

-

Hydroxy Single-walled carbon nanotube

SWCNT -OH

>90

1-2

10-30

>380

>100

0.14

3.96

-

Carboxy Single-walled carbon nanotube

SWCNT -COOH

>90

1-2

10-30

>380

>100

0.14

-

2.73

 

Our Multi Walled Carbon Nanotubes are made by CCVD and purified using concentrated acid chemistry.carbon Nanotubes (CNTs) have proven to offer a unique properties of stiffness and strength largely due to their high aspect ratio and all carbon structure. The thermal and electrical conductivity found in CNTs is much higher than that of other conductive or fibrous additive materials. Surfactants are used to stabilize dispersions in DI Water or other aqueous solvent mixtures.

The most common surfactants used are PVP, SDS, or SDBS. The carbon atoms in CNTs are arranged in a planar honeycomb lattice structure in which each atom is connected via a strong chemical bond to the three neighboring atoms. These strong bonds are the reason that the basal plane elastic modulus of graphite is one of the largest of any known material. Having such strong bonds at the atomic level as well as a high aspect ratio, Carbon Nanotubes are expected to be the ultimate high-strength fibers.

 

 

Multi-walled carbon nanotubes < 8nm

   

Products

 Property Purity OD Length SSA EC Tap Density -OH Content -COOH Content
Unit Wt% nm Micron m2/g s/cm g/cm3 Wt% Wt%
Method TGA & TEM HRTEM,Raman TEM BET XPS & Titration XPS & Titration

Multi-walled carbon nanotubes <8

MWCNT<8

>98

 <8

10-30

>350

>100

0.27

-

-

Hydroxy Multi-walled carbon nanotubes <8

MWCNT-OH <8

>98

<8

10-30

>350

>100

0.27

5.58

-

Carboxy Multi-walled carbon nanotubes <8

MWNT-COOH <8

>98

<8

10-30

>350

>100

0.27

-

3.86

 

 

 

Multi-walled carbon nanotubes 8-15nm

 

Products

 Property Purity OD Length SSA EC Tap Density -OH Content -COOH Content
Unit Wt% nm Micron m2/g s/cm g/cm3 Wt% Wt%
Method TGA & TEM HRTEM,Raman TEM BET XPS & Titration XPS & Titration

Multi-walled carbon nanotubes 8-15

MWCNT 8-15

>95

8-15

50

233

>100

0.27

-

-

Hydroxy Multi-walled carbon nanotubes 8-15

MWCNT-OH 8-15

>95

8-15

50

233

>100

0.27

3.7

-

Carboxy Multi-walled carbon nanotubes 8-15

MWNT-COOH 8-15

>95

8-15

50

233

>100

0.27

-

2.56

 

 

 

Multi-walled carbon nanotubes 10-20nm

 

Products

 Property Purity OD Length SSA EC Tap Density -OH Content -COOH Content
Unit Wt% nm Micron m2/g s/cm g/cm3 Wt% Wt%
Method TGA & TEM HRTEM,Raman TEM BET XPS & Titration XPS & Titration

Multi-walled carbon nanotubes 10-20

MWCNT 10-20

>95

10-20

10-30

200

>100

0.22

-

-

Hydroxy Multi-walled carbon nanotubes 10-20

MWCNT-OH 10-20

>95

10-20

10-30

200

>100

0.22

3.06

-

Carboxy Multi-walled carbon nanotubes 10-20

MWNT-COOH 10-20

>95

10-20

10-30

200

>100

0.22

-

2.00

 

 

 

Multi-walled carbon nanotubes 20-30nm

 

Products

 Property Purity OD Length SSA EC Tap Density -OH Content -COOH Content
Unit Wt% nm Micron m2/g s/cm g/cm3 Wt% Wt%
Method TGA & TEM HRTEM,Raman TEM BET XPS & Titration XPS & Titration

Multi-walled carbon nanotubes 20-30

MWCNT 20-30

>98

20-30

10-30

110

>100

0.28

-

-

Hydroxy Multi-walled carbon nanotubes 20-30

MWCNT-OH 20-30

>98

20-30

10-30

110

>100

0.28

1.76

-

Carboxy Multi-walled carbon nanotubes 20-30

MWNT-COOH 20-30

>98

20-30

10-30

110

>100

0.28

-

1.23

 

 

 

Multi-walled carbon nanotubes 30-50nm

 

Products

 Property Purity OD Length SSA EC Tap Density -OH Content -COOH Content
Unit Wt% nm Micron m2/g s/cm g/cm3 Wt% Wt%
Method TGA & TEM HRTEM,Raman TEM BET XPS & Titration XPS & Titration

Multi-walled carbon nanotubes  30-50

MWCNT 30-50

>98

30-50

10-20

100

>100

0.22

-

-

Hydroxy Multi-walled carbon nanotubes 30-50

MWCNT-OH 30-50

>98

30-50

10-20

100

>100

0.22

1.06

-

Carboxy Multi-walled carbon nanotubes 30-50

MWNT-COOH 30-50

>98

30-50

10-20

100

>100

0.22

-

0.73

 

 

 

Multi-walled carbon nanotubes >50nm

 

Products

 Property Purity OD Length SSA EC Tap Density -OH Content -COOH Content
Unit Wt% nm Micron m2/g s/cm g/cm3 Wt% Wt%
Method TGA & TEM HRTEM,Raman TEM BET XPS & Titration XPS & Titration

Multi-walled carbon nanotubes >50

MWCNT >50

>98

>50

10-20

>60

>100

0.18

-

-

Hydroxy Multi-walled carbon nanotubes >50

MWCNT-OH >50

>98

>50

10-20

>60

>100

0.18

0.71

-

Carboxy Multi-walled carbon nanotubes >50

MWNT-COOH >50

>98

>50

10-20

>60

>100

0.18

-

0.49