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659258

Sigma-Aldrich

Carbon nanotube, multi-walled

>90% carbon basis, D × L 110-170 nm × 5-9 μm

All Photos(2)
Synonym(s):
MWCNT, MWNT, Multiwall carbon nanotube
CAS Number:
308068-56-6
NACRES:
NA.23

Assay

>90% carbon basis

form

powder

composition

carbon, >90%

D × L

110-170 nm × 5-9 μm

mp

3652-3697 °C (lit.)

density

1.7 g/mL at 25 °C
~2.1 g/mL at 25 °C (lit.)

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Carbon nanotube, multi-walled >90% carbon basis, D × L 110-170 nm × 5-9 μm

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Carbon nanotube, multi-walled 50-90 nm diameter, >95% carbon basis

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Carbon nanotube, multi-walled

Carbon nanotube, multi-walled flake of bundled CNTs, >95% carbon basis, O.D. × L 10-40 nm × 0.5-1.5 mm

Sigma-Aldrich

901002

Carbon nanotube, multi-walled

assay

>90% carbon basis

assay

>98% carbon basis

assay

>95% carbon basis

assay

>95% carbon basis

form

powder

form

powder

form

-

form

-

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

composition

carbon, >90%

composition

carbon, >98% (total metals impurities)

composition

-

composition

-

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

greener alternative product characteristics

-

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

D × L

110-170 nm × 5-9 μm

D × L

-

D × L

-

D × L

-

General description

Multi walled carbon nanotubes (MWNTs, CNTs) were prepared by chemical vapor deposition (CVD). In chemical vapor deposition (CVD), a volatile precursor undergoes thermal decomposition at elevated temperatures to form a solid deposit on a substrate. 1 The diameter of the tube ranges between 110-170nm and the length is between 5-9μm. The multiwalled nanotubes are stable in inert atmosphere upto a temperature of 3697oC.

Application

Carbon nanotube, multi-walled (MWNT) belongs to the class of carbonaceous materials with excellent physiochemical, thermo-mechanical and electrochemical properties. This material can be used in a variety of sustainable energy applications such as solar cells, photocatalysis, biosensor, gas sensor, supercapacitor and as a filler that acts as a reinforcement to improve the mechanical property of composites.
Toxic and immunological effects of carbon nanotubes on human colorectal cancer cell line (Caco-2), the human breast adenocarcinoma cell line(MCF-7), Calu-3 cells from human lung adenocarcinoma and serous cells of proximal bronchial airways was investigated. These multiwalled carbon nanotubes were used to design a 3D, free standing porous carbon structure. The self-supporting structures could find potential uses in energy storage, supercapacitors, photovoltaic cells, field emission devices, sensors and high performance catalysts.Polystyrene/MWNTs nanocomposites have been fabricated and studied for its electrical and optical properties. Preparation of platinum/MWNTs/cobaltite nanocomposites has also been reported.

Preparation Note

Chemical Vapor Deposition (CVD) Method

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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