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Home » Double Walled CNT (DWCNTs-CVD, Purity: >75%)


Stock No. CAS MSDS Specification COA
NS6130-14-1137 308068-56-6 MSDS pdf Specification pdf

Double Walled CNT

(DWCNTs-CVD, Purity: >75%)

Available Pack Size: 10Gms, 25Gms, 50Gms, 100Gms, 250Gms, 500Gms, 1Kg & Bulk orders
Product Double Walled CNT
Stock No NS6130-14-1137
CAS 308068-56-6 Confirm
Outside Diameter < 15nm (±5 nm) Confirm
Length 5-15µm Confirm
Purity (Carbon basis) >75% Confirm
DWCNT basis >10% Confirm
Molecular Formula C Confirm
Molecular Weight 12.01g/mol Confirm
Color Black Confirm
Form Solid Confirm
Density 1.7-2.1g/cm³ Confirm
Amorphous carbon <5wt% Confirm
Bulk density ~0.23 g/cm³ Confirm
Charging * 2180 (Capacity: mA h/g) Confirm
Discharging* 534 (Capacity: mA h/g) Confirm
Electrical Conductivity >10-2 S/cm Confirm
Method of production CVD or Electric arc. Confirm
Volume Resistivity 0.1-0.15 Confirm
Quality Control Each lot of Double Walled CNT was tested successfully.
Main Inspect Verifier Manager QC

Expert Reviews

Dr. Ms. Kelley Johnson, Ph.D, (Adam Mickiewicz University in Poznań, Poland)

Double-walled carbon nanotubes are coaxial nanostructures composed of exactly two single-walled carbon nanotubes, one nested in another. This double-wall structure makes DWNTs the simplest system for studying the effects of inter-wall coupling on the physical properties of carbon nanotubes (CNTs). Compared to single-walled carbon nanotubes (SWNTs), DWNTs have higher mechanical strength and thermal stability and they also possess interesting electronic and optical properties.

Dr. Richard Harper, Ph.D, (National Polytechnic Institute (IPN), Mexico)

DWNTS are used in applications such as: Field effect transistors, mass sensors, ultra-fast optical switches, nanomotor/nanobearing, capacitors, solar cells etc. DWNTS exhibit higher stability, which can be a substantial help in high-current and high-field experiments as, e.g., in field emission applications.

Dr. Juan Yang, (Seoul National University Seoul, South Korea)

DWCNTS possess enhanced properties compared to those of single-walled carbon nanotubes (SWCNTs). DWCNTs are more thermally stable than SWCNTs, as they can withstand temperatures as high as 2000 °C without experiencing considerable morphological changes.

Dr. Steve Chesney, Ph.D, (Ludwig Maximilian University of Munich,Germany)

Double wall carbon nanotubes have been considered as potential candidate for ultra-high frequency oscillator. The DWCNTs are separated into four categories wherein the inner–outer nanotubes are metal–metal, metal–semiconductor, semiconductor–metal and semiconductor– semiconductor single-wall nanotubes.

Dr. Ms. Mia Liao, (National Taipei University of Technology, Taiwan)

The band structure of a DWCNT depends on the combination of the configurations of the inner and outer tubes and their stability depends only on their inter layer spacing. The presence of a shielding outer wall is especially appealing for chemical and biological sensors, as it allows for chemical modification of the outer shell while maintaining the electrical properties of the inner pristine core.

Double Walled CNT

Double Walled CNT

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