TY  - JOUR
AU  - Marković, Zoran M.
AU  - Todorović-Marković, Biljana
AU  - Mohai, I.
AU  - Farkas, Z.
AU  - Kovats, E.
AU  - Szepvolgyi, J.
AU  - Otasevic, D.
AU  - Scheier, P.
AU  - Feil, S.
AU  - Romčević, Nebojša Ž.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3174
AB  - In this work, comparative analysis of processes in carbon arc and radio frequency (RF) plasma during fullerene synthesis has been presented. The kinetic model of fullerene formation developed earlier has been verified in both types of plasma reactors. The fullerene yield depended on carbon concentration, velocity of plasma flame and rotational temperature of C(2) radicals predominantly. When mean rotational temperature of C(2) radicals was 3000 K, the fullerene yield was the highest regardless of the type of used reactor. The zone of fullerene formation is larger significantly in RF plasma reactor compared to arc reactor.
T2  - Journal of Nanoscience and Nanotechnology
T1  - Comparative process analysis of fullerene production by the arc and the radio-frequency discharge methods
VL  - 7
IS  - 4-5
SP  - 1357
EP  - 1369
DO  - 10.1166/jnn.2007.315
ER  - 

@article{
author = "Marković, Zoran M. and Todorović-Marković, Biljana and Mohai, I. and Farkas, Z. and Kovats, E. and Szepvolgyi, J. and Otasevic, D. and Scheier, P. and Feil, S. and Romčević, Nebojša Ž.",
year = "2007",
abstract = "In this work, comparative analysis of processes in carbon arc and radio frequency (RF) plasma during fullerene synthesis has been presented. The kinetic model of fullerene formation developed earlier has been verified in both types of plasma reactors. The fullerene yield depended on carbon concentration, velocity of plasma flame and rotational temperature of C(2) radicals predominantly. When mean rotational temperature of C(2) radicals was 3000 K, the fullerene yield was the highest regardless of the type of used reactor. The zone of fullerene formation is larger significantly in RF plasma reactor compared to arc reactor.",
journal = "Journal of Nanoscience and Nanotechnology",
title = "Comparative process analysis of fullerene production by the arc and the radio-frequency discharge methods",
volume = "7",
number = "4-5",
pages = "1357-1369",
doi = "10.1166/jnn.2007.315"
}

Marković, Z. M., Todorović-Marković, B., Mohai, I., Farkas, Z., Kovats, E., Szepvolgyi, J., Otasevic, D., Scheier, P., Feil, S.,& Romčević, N. Ž.. (2007). Comparative process analysis of fullerene production by the arc and the radio-frequency discharge methods. in Journal of Nanoscience and Nanotechnology, 7(4-5), 1357-1369.
https://doi.org/10.1166/jnn.2007.315

Marković ZM, Todorović-Marković B, Mohai I, Farkas Z, Kovats E, Szepvolgyi J, Otasevic D, Scheier P, Feil S, Romčević NŽ. Comparative process analysis of fullerene production by the arc and the radio-frequency discharge methods. in Journal of Nanoscience and Nanotechnology. 2007;7(4-5):1357-1369.
doi:10.1166/jnn.2007.315 .

Marković, Zoran M., Todorović-Marković, Biljana, Mohai, I., Farkas, Z., Kovats, E., Szepvolgyi, J., Otasevic, D., Scheier, P., Feil, S., Romčević, Nebojša Ž., "Comparative process analysis of fullerene production by the arc and the radio-frequency discharge methods" in Journal of Nanoscience and Nanotechnology, 7, no. 4-5 (2007):1357-1369,
https://doi.org/10.1166/jnn.2007.315 . .

TY  - JOUR
AU  - Szepvoelgyi, Janos
AU  - Marković, Zoran M.
AU  - Todorović-Marković, Biljana
AU  - Nikolić, Zoran M.
AU  - Mohai, Ilona
AU  - Farkas, Zsuzsanna
AU  - Toth, Maria
AU  - Kovats, Eva
AU  - Scheier, Paul
AU  - Feil, Stefan
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3162
AB  - Synthesis of fullerenes from graphite powders of different grade was studied in a radiofrequency (RF) plasma reactor. Dependence of fullerene yield on the properties and feed rate of precursors and on the helium content of plasma gas was studied in details. The fullerene yield was influenced by the mean size and the thermal conductivity of graphite particles on the one hand, and the helium content of the gas phase on the other. Soot containing fullerene mixture of 5.9% was produced in best conditions found in this work. The main component of the fullerene mixture was C-60. In addition, it contained about 30% of C-70 (corresponding to a C-60/C-70 mass ratio of 2.64). Higher fullerenes such as C-84 were also detected by mass spectroscopy (MS) and high performance liquid chromatography (HPLC).
T2  - Plasma Chemistry and Plasma Processing
T1  - Effects of precursors and plasma parameters on fullerene synthesis in RF thermal plasma reactor
VL  - 26
IS  - 6
SP  - 597
EP  - 608
DO  - 10.1007/s11090-006-9036-0
ER  - 

@article{
author = "Szepvoelgyi, Janos and Marković, Zoran M. and Todorović-Marković, Biljana and Nikolić, Zoran M. and Mohai, Ilona and Farkas, Zsuzsanna and Toth, Maria and Kovats, Eva and Scheier, Paul and Feil, Stefan",
year = "2006",
abstract = "Synthesis of fullerenes from graphite powders of different grade was studied in a radiofrequency (RF) plasma reactor. Dependence of fullerene yield on the properties and feed rate of precursors and on the helium content of plasma gas was studied in details. The fullerene yield was influenced by the mean size and the thermal conductivity of graphite particles on the one hand, and the helium content of the gas phase on the other. Soot containing fullerene mixture of 5.9% was produced in best conditions found in this work. The main component of the fullerene mixture was C-60. In addition, it contained about 30% of C-70 (corresponding to a C-60/C-70 mass ratio of 2.64). Higher fullerenes such as C-84 were also detected by mass spectroscopy (MS) and high performance liquid chromatography (HPLC).",
journal = "Plasma Chemistry and Plasma Processing",
title = "Effects of precursors and plasma parameters on fullerene synthesis in RF thermal plasma reactor",
volume = "26",
number = "6",
pages = "597-608",
doi = "10.1007/s11090-006-9036-0"
}

Szepvoelgyi, J., Marković, Z. M., Todorović-Marković, B., Nikolić, Z. M., Mohai, I., Farkas, Z., Toth, M., Kovats, E., Scheier, P.,& Feil, S.. (2006). Effects of precursors and plasma parameters on fullerene synthesis in RF thermal plasma reactor. in Plasma Chemistry and Plasma Processing, 26(6), 597-608.
https://doi.org/10.1007/s11090-006-9036-0

Szepvoelgyi J, Marković ZM, Todorović-Marković B, Nikolić ZM, Mohai I, Farkas Z, Toth M, Kovats E, Scheier P, Feil S. Effects of precursors and plasma parameters on fullerene synthesis in RF thermal plasma reactor. in Plasma Chemistry and Plasma Processing. 2006;26(6):597-608.
doi:10.1007/s11090-006-9036-0 .

Szepvoelgyi, Janos, Marković, Zoran M., Todorović-Marković, Biljana, Nikolić, Zoran M., Mohai, Ilona, Farkas, Zsuzsanna, Toth, Maria, Kovats, Eva, Scheier, Paul, Feil, Stefan, "Effects of precursors and plasma parameters on fullerene synthesis in RF thermal plasma reactor" in Plasma Chemistry and Plasma Processing, 26, no. 6 (2006):597-608,
https://doi.org/10.1007/s11090-006-9036-0 . .

TY  - JOUR
AU  - Todorović-Marković, Biljana
AU  - Marković, Zoran M.
AU  - Mohai, I
AU  - Nikolić, Zoran M.
AU  - Farkas, Z
AU  - Szepvolgyi, J
AU  - Kovats, E
AU  - Scheier, P
AU  - Feil, S
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2974
AB  - This paper presents results on fullerene formation during the processing of different graphite powders in an RF thermal plasma reactor. Graphite powders of different particle size and purity were fed into the reactor (Aldrich, KS4). Optical emission spectroscopy of atomic and molecular species is used as a diagnostic tool of the RF plasma flame. It was found that rotational and vibrational temperatures of C-2 radicals depend on the feed rate of the precursor used. The volumes of RF plasma flame during processing of graphite powders have been calculated. By analysing scanning electron microscopy micrographs of soot, the evaporation rate of the precursors used has been evaluated as well. Based on the obtained values of volumes of plasma flame and evaporation rate of starting powders, the concentration of C-2 radicals has been calculated.
T2  - Journal of Physics. D: Applied Physics
T1  - RF thermal plasma processing of fullerenes
VL  - 39
IS  - 2
SP  - 320
EP  - 326
DO  - 10.1088/0022-3727/39/2/012
ER  - 

@article{
author = "Todorović-Marković, Biljana and Marković, Zoran M. and Mohai, I and Nikolić, Zoran M. and Farkas, Z and Szepvolgyi, J and Kovats, E and Scheier, P and Feil, S",
year = "2006",
abstract = "This paper presents results on fullerene formation during the processing of different graphite powders in an RF thermal plasma reactor. Graphite powders of different particle size and purity were fed into the reactor (Aldrich, KS4). Optical emission spectroscopy of atomic and molecular species is used as a diagnostic tool of the RF plasma flame. It was found that rotational and vibrational temperatures of C-2 radicals depend on the feed rate of the precursor used. The volumes of RF plasma flame during processing of graphite powders have been calculated. By analysing scanning electron microscopy micrographs of soot, the evaporation rate of the precursors used has been evaluated as well. Based on the obtained values of volumes of plasma flame and evaporation rate of starting powders, the concentration of C-2 radicals has been calculated.",
journal = "Journal of Physics. D: Applied Physics",
title = "RF thermal plasma processing of fullerenes",
volume = "39",
number = "2",
pages = "320-326",
doi = "10.1088/0022-3727/39/2/012"
}

Todorović-Marković, B., Marković, Z. M., Mohai, I., Nikolić, Z. M., Farkas, Z., Szepvolgyi, J., Kovats, E., Scheier, P.,& Feil, S.. (2006). RF thermal plasma processing of fullerenes. in Journal of Physics. D: Applied Physics, 39(2), 320-326.
https://doi.org/10.1088/0022-3727/39/2/012

Todorović-Marković B, Marković ZM, Mohai I, Nikolić ZM, Farkas Z, Szepvolgyi J, Kovats E, Scheier P, Feil S. RF thermal plasma processing of fullerenes. in Journal of Physics. D: Applied Physics. 2006;39(2):320-326.
doi:10.1088/0022-3727/39/2/012 .

Todorović-Marković, Biljana, Marković, Zoran M., Mohai, I, Nikolić, Zoran M., Farkas, Z, Szepvolgyi, J, Kovats, E, Scheier, P, Feil, S, "RF thermal plasma processing of fullerenes" in Journal of Physics. D: Applied Physics, 39, no. 2 (2006):320-326,
https://doi.org/10.1088/0022-3727/39/2/012 . .