Graphitised Multi-Walled Carbon Nanotubes (G-MWCNT)

CAS Number 308068-56-6

Anode Materials, Carbon Nanotubes (CNTs), Low Dimensional Materials

Graphitised Multi-Walled Carbon Nanotubes (G-MWCNT) MSDS

Graphitised Multi-Walled Carbon Nanotubes (G-MWCNT) CAS 308068-56-6

Graphitised Multi-walled Carbon Nanotubes (G-MWCNT) (-OH and -COOH functionalised)

High purity MWCNT annealed under inert gas at high temperature – used for applications in biosensors, drug delivery, catalytic reactions, supercapacitors, energy storage and batteries.

Graphitised multi-walled carbon nanotubes (G-MWCNT), CAS number 308068-56-6, are multi-walled carbon nanotubes graphitized by annealing under inert gas at high temperatures. The graphitization procedure can remove residual metal catalyst in the nanotubes and reduce the wall defects. High purity over 99.9% can be achieved by the annealing process however the the graphitization process is also known to reduce the specific surface area by half.

Graphitised carbon nanotubes thus can be considered as a new hybrid of graphitic foliates grown along the sidewalls of multi-walled carbon nanotubes (CNTs). The high temperature thermal treatment produces multi-walled carbon nanotubes with the highest graphite crystallization, electrical conductivity, and the best oxidization resistance.

Aluminum-Graphitic MWCNT cell with graphitic MWCNT serves as an active cathode for rechargeable Al-ion battery exhibits good electrochemical performance with a specific capacity of 64 mAh·g^-1 at a current density of 200 mA·g^-1, and delivers 58 mAh·g^-1 with ~100% retention over 1000 cycles. Graphitised carbon nanotubes also finds applications in the following areas:

Biosensors
Electrodes for batteries and supercapacitors
Hydrogen storage
Flat panel displays
Transistor
Catalysis
Drug delivery

Reduced wall defects

Graphitization purifies the MWCNTs

Various Applications

Used in batteries, hydrogen storage, transistors, catalysis, biosensers and drug delivery

Worldwide shipping

Quick and reliable shipping

High purity

>99.9% High purity

Literature and Reviews

Purification and structural annealing of multiwalled carbon nanotubes at graphitization temperatures, R. Andrews et al., Carbon, 39 (11), 1681-1687 (2001); DOI: 10.1016/S0008-6223(00)00301-8.
Graphitic multi-walled carbon nanotube cathodes for rechargeable Al-ion batteries with well-defined discharge plateaus, M. Han et al., J. Power Sources, 451, 227769 (2020); DOI: 10.1016/j.jpowsour.2020.227769.
99.9% purity multi-walled carbon nanotubes by vacuum high-temperature annealing, W. Huang et al., Carbon 41. 2585–2590 (2003); DOI: 10.1016 / S0008-6223(03)00330-0.
Hydrogen uptake by graphitized multi-walled carbon nanotubes under moderate pressure and at room temperature, X. Li et al., Carbon 39, 2077–2079 (2001); DOI:10.1016/S0008-6223(01)00183-X.
Adsorption characteristics of organics in the effluent of ultra-short SRT wastewater treatment by single-walled, multi-walled, and graphitized multi-walled carbon nanotubes, Y. Zha et al., Sci. Rep., 8, 17245 (2018); DOI: 10.1038/s41598-018-35374-8

General Information

CAS Number	308068-56-6
Chemical Formula	C
Full Name	Graphitised Multi-walled Carbon Nanotubes
Synonyms	G-MWCNT, Graphitised MWCNT
Classification / Family	Graphite, Carbon Nanotubes, 1D Materials, Carbon Nanomaterials

Physical Properties

Product Code	M2374A1	M2374B1	M2374C1
Purity	>99.9%	>99.99%	>99.99%
Function Group	N/A	-OH	-COOH
Function Group Content	N/A	0.55 wt%	0.35 wt%
Form	Black powder	Black powder	Black powder
Electrical Conductivity	98 s/cm	98 s/cm	98 s/cm
Surface Area	35 m²/g	35 m²/g	35 m²/g
External Diameter	28 nm – 48 nm	28 nm – 48 nm	28 nm – 48 nm
Internal Diameter	5 nm – 10 nm	5 nm – 10 nm	5 nm – 10 nm
Size	5 μm – 10 μm	10 μm – 30 μm	10 μm – 30 μm
Synthetic Method	CVD	CVD, processed at 800 ℃	CVD, processed at 800 ℃