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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

Synonyme(s) :

MWCNT, MWNT, Multiwall carbon nanotube

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About This Item

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

Pureté

20-30% MWCNT basis

Forme

powder

Caractéristiques

avg. no. of layers 5 ‑ 20

Composition

carbon content, >99% TGA

D.E. × L

7-12 nm × 0.5-10 μm

Taille moy. des particules

−270 mesh
<53 μm

Pf

3652-3697 °C (lit.)

Densité

~2.1 g/mL at 25 °C (lit.)

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Description générale

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.

Forme physique

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

Notes préparatoires

Electric Arc Discharge Method

Autres remarques

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.

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

dust mask type N95 (US), Eyeshields, Gloves

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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
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)
Nanostructured Pt decorated graphene and multi walled carbon nanotube based room temperature hydrogen gas sensor
Kaniyoor A, et al.
Nanoscale, 1(3), 382-386 (2009)
Polyaniline/multi-walled carbon nanotube composites with core-shell structures as supercapacitor electrode materials
Zhou Y, et al.
Electrochimica Acta, 55(12), 3904-3908 (2010)
Afficher tous les articles scientifiques apparentés

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 & Applications

Graphene's unique properties spark interdisciplinary interest; its honeycomb structure offers electrical, optical, and mechanical marvels.

Polymer-Sorted Carbon Nanotubes

SWCNTs show promise in FETs, solar cells, and photodetectors due to their ultrafast charge transport mobility.

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