Purification of Multi Walled Carbon Nanotubes (Mwcnts) Synthesized by Arc Discharge Set Up

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon Letters / 11권 / 3호
ㆍ저자명 : Y.Malathi, Balaji Padya, K.V.P.Prabhakar, P.K.Jain

목차

1. Introduction
2. Experimental
3. Results and Discussions
4. Conclusions
Acknowledgements
References

한국어 초록

Carbon nanotubes are unique tubular structures of nanometer diameter and large length/diameter ratio. The nanotubes may consist
of one up to tens and hundreds of concentric shells of carbons with adjacent shells separation of ~0.34 nm. Multiwalled carbon
nanotubes were synthesized by arc-discharge technique. MWCNTs were formed at the cathode deposit along with other
carbonaceous materials like amorphous carbon, graphite etc. However, to get the best advantage of carbon nanotubes in various
advanced applications, these undesired carbonaceous materials to be removed which is a challenging task. In the present study,
various techniques were tried out for purifying MWCNTs such as physical filtration, chemical treatment and thermal annealing.
SEM, FTIR, TGA and BET techniques were used to characterize the CNTs at various stages. Results shows that suitable chemical
treatment followed by thermal annealing under controlled flow of oxygen gives the better route for purification of carbon nanotubes.

영어 초록

Carbon nanotubes are unique tubular structures of nanometer diameter and large length/diameter ratio. The nanotubes may consistof one up to tens and hundreds of concentric shells of carbons with adjacent shells separation of ~0.34 nm. Multiwalled carbonnanotubes were synthesized by arc-discharge technique. MWCNTs were formed at the cathode deposit along with othercarbonaceous materials like amorphous carbon, graphite etc. However, to get the best advantage of carbon nanotubes in variousadvanced applications, these undesired carbonaceous materials to be removed which is a challenging task. In the present study,various techniques were tried out for purifying MWCNTs such as physical filtration, chemical treatment and thermal annealing.SEM, FTIR, TGA and BET techniques were used to characterize the CNTs at various stages. Results shows that suitable chemicaltreatment followed by thermal annealing under controlled flow of oxygen gives the better route for purification of carbon nanotubes.

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