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Merck
CN

773840

Sigma-Aldrich

Carbon nanotube, multi-walled

≥98% carbon basis, O.D. × I.D. × L 10 nm ± 1 nm × 4.5 nm ± 0.5 nm × 3-~6 μm, TEM, avg. no. of layers, 6 ‑ 8

Synonym(s):

SMW200, MWCNT, MWNT, Multiwall carbon nanotube

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About This Item

CAS Number:
308068-56-6
UNSPSC Code:
12352103

Key Documents

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Assay

≥98% carbon basis

form

powder

feature

avg. no. of layers 6 ‑ 8

O.D. × I.D. × L

10 nm ± 1 nm × 4.5 nm ± 0.5 nm × 3-~6 μm, TEM

surface area

280-350 m2/g , BET

mp

3652-3697 °C (lit.)

density

~2.1 g/mL at 25 °C (lit.)

bulk density

0.068 g/cm3

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General description

Aspect ratio: > 350-550 (determined by AFM)
Number of Walls: 6-8 tube walls (typically). Multi walled carbon nanotubes (MWNTs, CNTs) were prepared by chemical vapor deposition (CVD) using cobalt and molybdenum as catalysts (CoMoCAT).In chemical vapor deposition (CVD), a volatile precursor undergoes thermal decomposition at elevated temperatures to form a solid deposit on a substrate. Compared to other techniques CVD produces greater yield of carbon nanotubes. Morphology and structure of the nanotubes can be easily tuned using CVD technique. The CNTs formed can be formed in bundles over a catalyst support or in patterns over substrates.1

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.
New generation of specialty multi-walled carbon nanotubes enable polymer composites with higher conductivity;easier to disperse and mechanical properties for advanced applications like conductive polymers or Li-ion battery cathodes.

Preparation Note

CoMoCAT™ Catalytic Chemical Vapor Deposition (CVD) Method

Legal Information

Product of SouthWest NanoTechnologies;Inc. CoMoCAT® is a Registered Trademark of SouthWest NanoTechnologies;Inc.
 
SWeNT is a registered trademark of Southwest NanoTechnologies;Inc.
CoMoCAT is a trademark of Chasm Advanced Materials

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
MKBV2390V
MKBT6481V
MKBS8791V
MKBS8792V
MKBQ0051V

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B. Jin et al.
Electrochemical Communications, 10, 10537-11540 (2008)
Olli Pitkänen et al.
Nanotechnology, 31(49), 495403-495403 (2020-09-26)
There is ever increasing demand for flexible energy storage devices due to the development of wearable electronics and other small electronic devices. The electrode flexibility is best provided by a special set of nanomaterials, but the required methodology typically consists
K. Sheem et al.
Journal of Power Sources, 158, 1425-1430 (2006)
S.K. Martha et al.
Journal of Power Sources, 189, 288-296 (2009)
Claudia Angélica Ramírez-Herrera et al.
Nanomaterials (Basel, Switzerland), 9(2) (2019-02-13)
The demand for multifunctional requirements in aerospace, military, automobile, sports, and energy applications has encouraged the investigation of new composite materials. This study focuses on the development of multiwall carbon nanotube (MWCNT) filled polypropylene composites and carbon nanofiber composite mats.
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Articles

Carbon Nanotubes: Manufacturing & Applications

CoMoCAT® technique improves multi-walled carbon nanotubes, applied in batteries, water filters, and conducting polymer composites.

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