Title :
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
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;
Conference_Titel :
Gas Discharges and Their Applications, 2008. GD 2008. 17th International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-0-9558052-0-2
