Carbon nanofibers synthesis by a glow-electric arc at high frequencies and low power supply

Author

Pacheco, M. ; Pacheco, J. ; Valdivia, R. ; Santana, A. ; Velazquez, S. ; Juanico, A. ; Estrada, N.

Author_Institution

Inst. Nac. de Investig. Nucl., Mexico City, Mexico

fYear

2008

fDate

7-12 Sept. 2008

Firstpage

377

Lastpage

380

Abstract

Carbon nanofibers (CNF) were synthesized by a glow-arc discharge at frequencies of 42 kHz and at relatively low power supply (360 W) under a helium-methane atmosphere. The behaviour of temporal evolution of voltage and current discharges is studied. The product obtained was analyzed by scanning and transmission electron microscopy and Raman scattering, showing CNF relatively free of amorphous-carbon. Preliminary results of a toxic gas adsorption (nitric oxide, NO) in CNF are also reported.

Keywords

Raman spectra; adsorption; arcs (electric); carbon fibres; glow discharges; nanofabrication; nanofibres; nitrogen compounds; plasma materials processing; scanning electron microscopy; transmission electron microscopy; C; NO; Raman scattering; amorphous carbon; carbon nanofibers; current discharges; frequency 42 kHz; glow-electric arc discharge; helium-methane atmosphere; nitric oxide; power 360 W; scanning electron microscopy; toxic gas adsorption; transmission electron microscopy; voltage temporal evolution; Atmosphere; Carbon dioxide; Electrodes; Frequency synthesizers; Glow discharges; Inductors; Plasma chemistry; Plasma temperature; Power supplies; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Gas Discharges and Their Applications, 2008. GD 2008. 17th International Conference on

Conference_Location

Cardiff

Print_ISBN

978-0-9558052-0-2

Type

conf

Filename

5379211