Optical emission study of RF thermal plasma during fullerene synthesis
Nema prikaza
Autori
Marković, Zoran M.Todorović-Marković, Biljana
Mohai, I
Karoly, Z
Szepvolgyi, J
Farkas, Z
Nikolić, Zoran M.
Članak u časopisu
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Results on studies of molecular spectra emitted in the initial stages of fullerene synthesis during processing of graphite powder in RF thermal plasma conditions are presented in this work. CN-usually present in carbon plasmas-and C-2 were found as dominant molecular species. The role of CN radicals on the fullerene formation was discussed in detail. Intensities of CN and C-2 lines were studied against the composition of gas phase and the feed rate of graphite powder. The rotational-vibrational temperatures of CN species were calculated by fitting the experimental spectra to the simulated ones. It was concluded that in the plasma region CN radicals could be formed by the reaction Of C-2 with atomic nitrogen at smaller loads. This reaction lowered the yield of fullerenes. At larger loads, C2 formation was decreased due to lower temperature of the particles compared to smaller load. The CN radicals were produced by the surface reaction of the hot carbon particles with nitrogen atoms. Res...ults confirmed that for effective fullerene synthesis, the nitrogen content of the precursors and the plasma gases should be minimized.
Ključne reči:
fullerene / plasma reactions / scanning electron microscopyIzvor:
Fullerenes Nanotubes and Carbon Nanostructures, 2005, 13, 3, 215-226
DOI: 10.1081/FST-200056236
ISSN: 1536-383X
WoS: 000230757000004
Scopus: 2-s2.0-23144465886
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Institucija/grupa
VinčaTY - JOUR AU - Marković, Zoran M. AU - Todorović-Marković, Biljana AU - Mohai, I AU - Karoly, Z AU - Szepvolgyi, J AU - Farkas, Z AU - Nikolić, Zoran M. PY - 2005 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2910 AB - Results on studies of molecular spectra emitted in the initial stages of fullerene synthesis during processing of graphite powder in RF thermal plasma conditions are presented in this work. CN-usually present in carbon plasmas-and C-2 were found as dominant molecular species. The role of CN radicals on the fullerene formation was discussed in detail. Intensities of CN and C-2 lines were studied against the composition of gas phase and the feed rate of graphite powder. The rotational-vibrational temperatures of CN species were calculated by fitting the experimental spectra to the simulated ones. It was concluded that in the plasma region CN radicals could be formed by the reaction Of C-2 with atomic nitrogen at smaller loads. This reaction lowered the yield of fullerenes. At larger loads, C2 formation was decreased due to lower temperature of the particles compared to smaller load. The CN radicals were produced by the surface reaction of the hot carbon particles with nitrogen atoms. Results confirmed that for effective fullerene synthesis, the nitrogen content of the precursors and the plasma gases should be minimized. T2 - Fullerenes Nanotubes and Carbon Nanostructures T1 - Optical emission study of RF thermal plasma during fullerene synthesis VL - 13 IS - 3 SP - 215 EP - 226 DO - 10.1081/FST-200056236 ER -
@article{ author = "Marković, Zoran M. and Todorović-Marković, Biljana and Mohai, I and Karoly, Z and Szepvolgyi, J and Farkas, Z and Nikolić, Zoran M.", year = "2005", abstract = "Results on studies of molecular spectra emitted in the initial stages of fullerene synthesis during processing of graphite powder in RF thermal plasma conditions are presented in this work. CN-usually present in carbon plasmas-and C-2 were found as dominant molecular species. The role of CN radicals on the fullerene formation was discussed in detail. Intensities of CN and C-2 lines were studied against the composition of gas phase and the feed rate of graphite powder. The rotational-vibrational temperatures of CN species were calculated by fitting the experimental spectra to the simulated ones. It was concluded that in the plasma region CN radicals could be formed by the reaction Of C-2 with atomic nitrogen at smaller loads. This reaction lowered the yield of fullerenes. At larger loads, C2 formation was decreased due to lower temperature of the particles compared to smaller load. The CN radicals were produced by the surface reaction of the hot carbon particles with nitrogen atoms. Results confirmed that for effective fullerene synthesis, the nitrogen content of the precursors and the plasma gases should be minimized.", journal = "Fullerenes Nanotubes and Carbon Nanostructures", title = "Optical emission study of RF thermal plasma during fullerene synthesis", volume = "13", number = "3", pages = "215-226", doi = "10.1081/FST-200056236" }
Marković, Z. M., Todorović-Marković, B., Mohai, I., Karoly, Z., Szepvolgyi, J., Farkas, Z.,& Nikolić, Z. M.. (2005). Optical emission study of RF thermal plasma during fullerene synthesis. in Fullerenes Nanotubes and Carbon Nanostructures, 13(3), 215-226. https://doi.org/10.1081/FST-200056236
Marković ZM, Todorović-Marković B, Mohai I, Karoly Z, Szepvolgyi J, Farkas Z, Nikolić ZM. Optical emission study of RF thermal plasma during fullerene synthesis. in Fullerenes Nanotubes and Carbon Nanostructures. 2005;13(3):215-226. doi:10.1081/FST-200056236 .
Marković, Zoran M., Todorović-Marković, Biljana, Mohai, I, Karoly, Z, Szepvolgyi, J, Farkas, Z, Nikolić, Zoran M., "Optical emission study of RF thermal plasma during fullerene synthesis" in Fullerenes Nanotubes and Carbon Nanostructures, 13, no. 3 (2005):215-226, https://doi.org/10.1081/FST-200056236 . .