Graphitised Multi-Walled Carbon Nanotubes (G-MWCNT)
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) 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.
Aluminium-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:
- Electrodes for batteries and supercapacitors
- Hydrogen storage
- Flat panel displays
- Drug delivery
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
|Full Name||Graphitised Multi-walled Carbon Nanotubes|
|Synonyms||G-MWCNT, Graphitised MWCNT|
|Classification / Family||Graphite, Carbon Nanotubes, 1D Materials, Carbon Nanomaterials|
|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 ℃|
To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, military, pharmaceuticals, cosmetics, food, or commercial applications.