COSMOSIL CNT series are ideal for separation of soluble carbon nanotubes based on sizes. COSMOSIL CNT series are packed with hydrophilic group-bonded silica packing material. The columns are specially designed to avoid adsorption of carbon nanotubes to silica support and thus ensure high resolution and maximum recovery of carbon nanatubes. COSMOSIL CNT series are available in three different pore sizes, 300 Å, 1000 Å and 2000 Å, respectively.
Features of COSMOSIL CNT: |
– Size-based separation of soluble carbon nanotubes |

MATERIAL CHARACTERISTICS
|
|||
CNT-300
|
CNT-1000
|
CNT-2000
|
|
Silicagel
|
high purity porous spherical silica
|
||
Average particle size
|
5µm
|
||
Average pore size
|
approx. 300Å
|
approx. 1000Å
|
approx. 2000Å
|
Stationary phase
|
hydrophilic group (neutral)
|
||
pH Range
|
2-7.5
|
||
Pressure
|
15 MPa and below
|
Size-based separation of carbon nanotubes
COSMOSIL CNT columns offered improved separation for DNA wrapped carbon nanotubes by connecting three columns with different pore sizes.

Condition | |
Column | COSMOSIL CNT-300 7.5 mm I.D. x 300 mm |
COSMOSIL CNT-1000 7.5 mm I.D. x 300 mm | |
COSMOSIL CNT-2000 7.5 mm I.D. x 300 mm | |
Mobile phase | 0.5 mmol/l EDTA, 200 mmol/l NaCl, 40 mmol/l Tris-Tris HCl(pH 7.0) |
Flow rate | 1.0 ml/min |
Temperature | 40 °C |
Detection | UV 260 nm (x 1), 350 nm (x 20) |
Sample | DNA-wrapped CNT (CNT-DNA) |
Injection vol. | 500 µl |
Pressure | 8.1 MPa |
Sample courtesy of Prof. H. Shinohara, Department of Chemistry & Institute for Advanced Research, Nagoya University |
AFM (Atomic Force Microscope) Analysis

Cosmosil CNT Column
Item | Catalog | Price ($U.S.) | Buy |
---|---|---|---|
CNT-1000 Guard Column 7.5 mm I.D. x 50 mm | 091-9661 | $659.00 | Add to cart |
CNT-2000 Guard Column 7.5 mm I.D. x 50 mm | 091-9841 | $659.00 | Add to cart |
CNT-300 Guard Column 7.5 mm I.D. x 50 mm | 091-9481 | $659.00 | Add to cart |
CNT-2000 Packed Column 7.5 mm I.D. x 300 mm | 091-9931 | $2,575.00 | Add to cart |
CNT-300 Packed Column 7.5 mm I.D. x 300 mm | 091-9571 | $2,575.00 | Add to cart |
CNT-1000 Packed Column 7.5 mm I.D. x 300 mm | 091-9751 | $2,575.00 | Add to cart |