Skip to Content
Merck
All Photos(4)

Key Documents

View All Documentation

406074

Sigma-Aldrich

Carbon nanotube, multi-walled

powdered cylinder cores, 20-30% MWCNT basis, O.D. × L 7-12 nm × 0.5-10 μm, avg. no. of layers, 5 ‑ 20

Synonym(s):

MWCNT, MWNT, Multiwall carbon nanotube

Sign Into View Organizational & Contract Pricing
All Photos(4)

About This Item

CAS Number:
308068-56-6
UNSPSC Code:
12352103
NACRES:
NA.23

Quality Level

100

Assay

20-30% MWCNT basis

form

powder

feature

avg. no. of layers 5 ‑ 20

composition

carbon content, >99% TGA

O.D. × L

7-12 nm × 0.5-10 μm

avg. part. size

−270 mesh
<53 μm

mp

3652-3697 °C (lit.)

density

~2.1 g/mL at 25 °C (lit.)

Looking for similar products? Visit Product Comparison Guide

General description

Multi-walled carbon nanotube core surrounded by a fused carbon shell, the remainder being multi-layer polygonal carbon nanoparticles and amorphous and graphitic carbon nanoparticles.It contains approximately 5-20 graphitic layers. Carbon nanotubes produced by arc discharge technique contain very low impurity and possesses very high crystallinity. 4

Application

Bundles of MWNTs were trapped and manipulated to form nanotube ropes using optical tweezer. MWNTs were calcined and sonicated to form carbon nanoribbons. The nanoribbons were used to fabricate array of 98 source and drain electrodes on a 300 nm SiO2/p++Si substrates.2 A MWNT probe was fabricated on Si cantilevers.
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.

Physical form

Approximately 5-20 graphitic layers. Contains approximately 10-40% tubes, the remainder being multi-layer polygonal carbon nanoparticles and amorphous and graphitic carbon nanoparticles.

Preparation Note

Electric Arc Discharge Method

Other Notes

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

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

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCL3023
MKCH1108
MKBS4463V
MKBR5086V
MKBK0074V

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Simple and reliable method of conductive SPM probe fabrication using carbon nanotubes
Dremov V, et al.
arXiv null
Processing carbon nanotubes with holographic optical tweezers
Plewa J, et al.
Optics Express, 12(9), 1978-1981 (2004)
Alice Marcotte et al.
Nature materials, 19(10), 1057-1061 (2020-07-15)
Fluid and ionic transport at the nanoscale has recently demonstrated a wealth of exotic behaviours1-14. However, artificial nanofluidic devices15-18 are still far from demonstrating the advanced functionalities existing in biological systems, such as electrically and mechanically activated transport19,20. Here, we
Mechanical behavior and microstructure of cement composites incorporating surface-treated multi-walled carbon nanotubes
Li GY, et al.
Carbon, 43(6), 1239-1245 (2005)
Preparation of multi-walled carbon nanotube supported TiO2 and its photocatalytic activity in the reduction of CO2 with H2O
Xia X, et al.
Carbon, 45(4), 717-721 (2007)

Articles

Sorting Carbon Nanotubes and Their Biological Applications

Carbon nanotubes (CNTs) have received much attention since their discovery in 1991 by Sumio lijima1 due to their excellent mechanical, electrical, and optical properties.

3D Printable Conductive Nanocomposites of PLA and Multi-walled Carbon Nanotubes

A nanocomposite is typically defined as a mixture between a host material (e.g., polymer matrix) and nanofillers with at least one dimension of less than 100 nm.

Graphene Nanoribbons: Production and Applications

Graphene is a one-atomic-layer thick two-dimensional material made of carbon atoms arranged in a honeycomb structure. Its fascinating electrical, optical, and mechanical properties ignited enormous interdisciplinary interest from the physics, chemistry, and materials science fields.

Building and Engineering Micro/Nano Architectures of Single-Walled Carbon Nanotubes for Electronic Applications

Building and Engineering Micro/Nano Architectures of Single-Walled Carbon Nanotubes for Electronic Applications

See All

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service