Dual Role of Purification and Functionalisation of Single Walled CNT by Electron Cyclotron Resonance (ECR) Nitrogen Plasma

GRS Iyer, P Papakonstantinou, G Abbas, PD Maguire, D Bakirtzis

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Abstract

The Electron Cyclotron Resonance (ECR) plasma is a relatively new and scalable technique which opens up possibilities for a more environmentally friendly and rapid method of nanotube purification. We report a single step, dual purification and functionalisation technique using nitrogen-ECR plasma and compare results to those from standard RF plasma via Raman, Thermal Gravimetric Analysis (TGA), X-ray Photon spectroscopy (XPS) and static contact angle measurement. The purity of the nanotubes was evaluated by TGA which showed »96% for the N-ECR treated and »91% for the N-CCRF. Defects introduced by plasma exposure acted to functionalise the nanotubes by nitrogen attachment as evidenced by Raman, XPS and static contact angle measurements. The impact of nitrogen ion bombardment with two different plasma ion energies is fingerprinted by the defects induced in the nanotube matrix.
LanguageEnglish
Pages337-340
Journale-Journal of Surface Science and Nanotechnology
Volume7
DOIs
Publication statusPublished - 2009

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Nitrogen plasma
Cyclotrons
Electron cyclotron resonance
nitrogen plasma
Nanotubes
electron cyclotron resonance
purification
Purification
Nitrogen
carbon nanotubes
Electrons
nanotubes
Plasmas
Gravimetric analysis
Angle measurement
Photons
Contact angle
Spectrum Analysis
thermal analysis
Hot Temperature

Cite this

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abstract = "The Electron Cyclotron Resonance (ECR) plasma is a relatively new and scalable technique which opens up possibilities for a more environmentally friendly and rapid method of nanotube purification. We report a single step, dual purification and functionalisation technique using nitrogen-ECR plasma and compare results to those from standard RF plasma via Raman, Thermal Gravimetric Analysis (TGA), X-ray Photon spectroscopy (XPS) and static contact angle measurement. The purity of the nanotubes was evaluated by TGA which showed »96{\%} for the N-ECR treated and »91{\%} for the N-CCRF. Defects introduced by plasma exposure acted to functionalise the nanotubes by nitrogen attachment as evidenced by Raman, XPS and static contact angle measurements. The impact of nitrogen ion bombardment with two different plasma ion energies is fingerprinted by the defects induced in the nanotube matrix.",
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AU - Abbas, G

AU - Maguire, PD

AU - Bakirtzis, D

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