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A method and apparatus for high-throughput controlled synthesis of fullerenes and endohedral metal fullerenes / G. N. Churilov [et al.] // Tech. Phys. Lett. - 2016. - Vol. 42, Is. 5. - P. 475-477, DOI 10.1134/S1063785016050072. - Cited References: 9. - This work was supported by a grant of the Ministry of Science and Education of the Russian Federation, ID RFMEFI61314X0010, project no. 14.613.21.0010. . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
Metallofullerenes
Plasma
Аннотация: A method for synthesis of carbon nanostructures in a high-frequency arc discharge in the flow of helium (3–4 L/min) is presented. It is shown that the plasma-chemical synthesis of fullerenes and endohedral metal fullerenes (EMFs) can be controlled by changing helium pressure in the chamber. Temperature and electron concentration along the line normal to the discharge axis decrease upon moving away from the axis to the periphery; the larger the pressure, the sharper is the decrease in these parameters. The optimal helium pressure of 98 kPa was found in obtaining the Gd@C82 EMF which corresponds to the maximal EMF yield of 5 wt %. © 2016, Pleiades Publishing, Ltd.

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Публикация на русском языке Метод и установка для высокопроизводительного управляемого синтеза фуллеренов и эндоэдральных металлофуллеренов [Текст] / Г. Н. Чурилов [и др.] // Письма в Журн. техн. физ. : Санкт-Петербургская издательская фирма "Наука" РАН, 2016. - Т. 42 Вып. 9. - С. 64–70

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Leibniz Institute for Solid State and Material Research, Dresden, Germany

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Popov, A. A.; Vnukova, N. G.; Внукова, Наталья Григорьевна; Dudnik, A. I.; Дудник, Александр Иванович; Glushchenko, G. A.; Глущенко, Гарий Анатольевич; Samoylova, N. A.; Dubinina, I. A.; Дубинина, Ирина Александровна; Gulyaeva, U. E.; Гуляева, Ульяна Евгеньевна
}
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A study of the synthesis products of fullerenes with nickel and cobalt / E. A. Petrakovskaya [et al.] // Tech. Phys. - 2001. - Vol. 46, Is. 1. - P. 42-46, DOI 10.1134/1.1340883. - Cited References: 15 . - ISSN 1063-7842

РУБ Physics, Applied
Рубрики:
COMPLEXES
SPECTRA
Аннотация: Qualitative analysis of the products of plasmochemical synthesis of fullerenes with metallic nickel and cobalt has been carried out using electron paramagnetic resonance (EPR) and electron microscopy. These studies show that the synthesis products are mainly fullerenes, metallic nanoparticles coated with an insulating layer, and isolated atomic clusters. (C) 2001 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirenskii Inst. of Physics, Siberian Branch, RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Bulina, N. V.; Булина, Наталья Васильевна; Churilov, G. N.; Чурилов, Григорий Николаевич; Puzyr', A. P.
}
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Arc synthesis of silicon-doped heterofullerenes in plasma at atmospheric pressure / N. V. Bulina [et al.] // Fullerenes Nanotubes and Carbon Nanostructures. - 2007. - Т. 15, № 5. - С. 395-400, DOI 10.1080/15363830701512229 . - ISSN 1536-383X. - ISSN 1536-4046

ГРНТИ

РИНЦ
Держатели документа:
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences
Max-Planck-Institut fur Kernphysik
Доп.точки доступа:
Bulina, N. V.; Булина, Наталья Васильевна; Lopatin, V. A.; Лопатин, Владислав Александрович; Vnukova, N. G.; Внукова, Наталья Григорьевна; Osipova, I. V.; Осипова, Ирина Владимировна; Churilov, G. N.; Чурилов, Григорий Николаевич; Krtschmer, W.
}
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Avramov, P. V.
Atomic-core dynamics and the electronic structure of some endo- and exohedral complexes of fullerenes with light elements / P. V. Avramov, S. A. Varganov, S. G. Ovchinnikov // Phys. Solid State. - 2000. - Vol. 42, Is. 11. - P. 2168-2175, DOI 10.1134/1.1324059. - Cited References: 39 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
M-AT-C-60 ENDOHEDRAL COMPLEXES
   MOLECULAR-DYNAMICS
   PHASE-TRANSITION
   AB-INITIO
   SOLID C60
   C-60
   IONS
Аннотация: The atomic and electronic structure of some endo-, exo-, and endo-exohedral complexes of the fullerene C-60 with various guest atoms and molecules (He-n, H-2, and Li-2) are investigated using semiempirical and nonempirical quantum-chemical methods. The atomic core dynamics is studied by the method of molecular dynamics. It is shown that guest atoms and molecules in fullerene polyhedra acquire an orbital angular momentum due to the correlated motion of nuclei above the low-energy barriers of the potential surface within the carbon polyhedron even at low temperatures (from 4 to 78 K). The emergence of orbital angular momenta of nuclei of guest atoms and molecules is attributed to a change in the contribution of the orbital angular momentum of electrons to the potential surface of the complexes. The motion of Li ions in a polyhedron leads to blurring of the top of the valence band and to the emergence of a charge polarization wave in the carbon polyhedron. (C) 2000 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, Kirenskii Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660062, Russia
ИФ СО РАН

Доп.точки доступа:
Varganov, S. A.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Аврамов, Павел Вениаминович
}
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Beta-phase silicon nanowires: structure and properties [Text] / P. B. Sorokin, P. V. Avramov [et al.] // 9th Biennial International Workshop "Fullerenes and Atomic Clusters" (IWFAC 2009) : July 6-10, 2009, St Petersburg, Russia : abstracts. - 2009. - Ст. P4.4. - P99

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Доп.точки доступа:
Sorokin, P.B.; Avramov, P.V.; Demin, V.A.; Chernozatonskii, L.A.; "Fullerenes and Atomic Clusters", Biennial International Workshop(9 ; 2009 ; JUL)
}
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Carbon coated nickel nanoparticles produced in high-frequency arc plasma at ambient pressure / N. Vnukova [et al.] // J. Magn. Magn. Mater. - 2017. - Vol. 440: EURO-Asian Symposium on Trends in Magnetism (EASTMAG) (AUG 15-19, 2016, Siberian Fed Univ, Krasnoyarsk, RUSSIA). - P. 164-166, DOI 10.1016/j.jmmm.2016.12.142. - Cited References:10. - The work was supported by Ministry of Education and Science of Russia (Russian-Japanese joined project, Agreement No 14.613.21.0010, ID RFMEFI61314X0010). . - ISSN 0304-8853. - ISSN 1873-4766

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
FULLERENES
NI3C
Кл.слова (ненормированные):
Nanoparticles -- Carbon -- Nickel
Аннотация: The nickel particles with the mean size about 10-20 nm coated with carbon were extracted by the treatment of the carbon condensate with nitric and hydrochloric acids. The initial carbon condensate containing nickel nanoparticles with a graphite conversion was synthesized in the high-frequency carbon-helium arc plasma at ambient pressure with the nickel nanoparticles as a catalyst. The nickel content in the nanoparticles was 84.6 wt %. Magnetic properties of the nanoparticles are characterized by the high hysteresis and thermal stability. The sample of compacted nanoparticles is characterized by electrical resistance much higher than it in of compacted initial condensate.

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Доп.точки доступа:
Vnukova, N. G.; Внукова, Наталья Григорьевна; Dudnik, A. I.; Дудник, Александр Иванович; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Nemtsev, I. V.; Volochaev, M.; Osipova, I. V.; Осипова, Ирина Владимировна; Churilov, G. N.; Чурилов, Григорий Николаевич; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН
}
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Novikov, P. V.
Characteristics of the heating dynamics of a graphite conductor taking into account the skin effect / P. V. Novikov, G. N. Churilov // Tech. Phys. - 2000. - Vol. 45, Is. 9. - P. 1214-1218, DOI 10.1134/1.1318113. - Cited References: 13 . - ISSN 1063-7842

РУБ Physics, Applied
Рубрики:
FULLERENES
C-60
SPECTRA
Аннотация: Calculations for a one-dimensional model of RF heating of a cylindrical graphite conductor have been carried out. The heating dynamics are analyzed in the general form. Conductor temperature profiles and the times for heating up to the graphite sublimation temperature as a function of current and frequency have been obtained. A model of conductor heating with partial return of the energy irradiated by the conductor surface has been considered. Frequency and current ranges have been determined to carry out this graphite sublimation method in a chamber with reflecting walls. The problem is associated with carbon vapor production and subsequent synthesis of fullerenes and other carbon structures. (C) 2000 MAIK "Nauka/ Interperiodica".

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Держатели документа:
Krasnoyarsk State Tech Univ, Krasnoyarsk 660074, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич
}
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Comparative analysis of two methods for synthesis of fullerenes at different helium pressures / A. I. Dudnik, I. V. Osipova, N. S. Nikolaev, G. N. Churilov // Fuller. Nanotub. Carbon Nanostruct. - 2020. - Vol. 28, Is. 9. - P. 697-701, DOI 10.1080/1536383X.2020.1746281. - Cited References: 16. - The reported study was funded by RFBR according to the research project No 18-32-20011 . - ISSN 1536-383X. - ISSN 1536-4046

РУБ Chemistry, Physical + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Atomic, Molecular & Chemical
Рубрики:
PLASMA
   YIELD
   DISCHARGE
   PARAMETERS
   DEPENDENCE
   C60
Кл.слова (ненормированные):
Fullerene synthesis -- alternating current -- direct current
Аннотация: The results of the effect of helium pressure in the chamber on the amount and composition of the produced fullerenes (C60, C70, etc.) synthesized in the arc plasma with graphite electrodes are presented. The findings obtained when the arc is powered by a direct (DC) and alternating (AC) currents of low frequency were compared in the same chamber with the electrodes located at the same angle to each other. These two methods are drastically different. The complete conversion of graphite into fullerene soot in AC occurs, but a part of the graphite is converted into a cathode deposit that does not contain fullerenes in DC, the relative amount of which increases when decreasing the helium pressure in the chamber. The highest fullerene content in fullerene soot of 10.2 wt.% is produced at a pressure of 127.5 kPa in AC arc, but in DC arc, the highest content of fullerenes in fullerene soot of 8.3 wt.% is produced at a pressure of 33.3 kPa.

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Держатели документа:
RAS, SB, Fed Res Ctr KSC, Kirensky Inst Phys, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Dudnik, A. I.; Дудник, Александр Иванович; Osipova, I. V.; Осипова, Ирина Владимировна; Nikolaev, N. S.; Николаев, Никита Сергеевич; Churilov, G. N.; Чурилов, Григорий Николаевич; RFBRRussian Foundation for Basic Research (RFBR) [18-32-20011]
}
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Controlled synthesis of fullerenes and endohedral metallofullerenes in high frequency arc discharge / G. Churilov [et al.] // Fuller. Nanotub. Carbon Nanostruct. - 2016. - Vol. 24, Is. 11. - P. 675-678, DOI 10.1080/1536383X.2016.1207062. - Cited References: 16. - The work is supported by the Ministry of Education and Science of Russia (Russian-Japanese joined project, Agreement № 14.613.21.0010, ID RFMEFI61314X0010). . - ISSN 1536-383X
Кл.слова (ненормированные):
Fullerene -- Endohedral metallofullerenes -- High frequency arc discharge -- Pressure -- Mass spectrum
Аннотация: The article presents the high-frequency arc discharge setup operating in helium atmosphere and applicable for the syntheses of carbon condensate with different dispersion and structure, along with fullerenes and endohedral metallofullerenes. It also highlights how the change of helium pressure in chamber can control the amount and composition of products in carbon condensate. The setup can be applied for the purposes of analysis, for instance in order to obtain information about the process of fullerenes and endohedral met-allofullerenes formation. Also, the fact that the yield of higher fullerenes is increasing with the pressure rise, whereas the yield of endohedral metallofullerenes is decreasing suggests different formation mechanisms. © 2016 Taylor & Francis Group, LLC.

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Держатели документа:
Kirensky Institute of Physics SB RAS, Krasnoyarsk, Russian Federation
Leibniz Institute for Solid State and Materials Research, Dresden, Germany
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Popov, A. A.; Vnukova, N. G.; Внукова, Наталья Григорьевна; Dudnik, A. I.; Дудник, Александр Иванович; Samoylova, N.; Glushenko, G. A.; Глущенко, Гарий Анатольевич
}
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10.

Electron density as the main parameter influencing the formation of fullerenes in a carbon plasma / G. N. Churilov [et al.] // Phys. Solid State. - 2002. - Vol. 44: 5th International Workshop on Fullerence and Atomic Clusters (JUL 02-06, 2001, ST PETERSBURG, RUSSIA), Is. 3. - P. 419-423, DOI 10.1134/1.1462659. - Cited References: 8 . - ISSN 1063-7834

РУБ Physics, Condensed Matter

Аннотация: Thermodynamic estimates are presented for the formation of spheroidal and flat carbon clusters from reactant species of different charges. Charge is shown to strongly influence the geometry and stability of flat clusters. Changes in the charge of flat clusters can promote both their folding to spheroidal structures and their dissociation. It is concluded that the fluctuations of electron concentration in carbon plasmas can result in the accumulation of fullerene clusters and the dissociation of flat clusters. (C) 2002 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Krasnoyarsk State Tech Univ, Krasnoyarsk 660074, Russia
Rice Univ, Houston, TX 77005 USA
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Novikov, P. V.; Новиков, Павел Вадимович; Lopatin, V. A.; Лопатин, Владислав Александрович; Vnukova, N. G.; Внукова, Наталья Григорьевна; Bulina, N. V.; Булина, Наталья Васильевна; Bachilo, S. M.; Tsyboulski, D.; Weisman, R. B.
}
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11.

Emission spectroscopy as the main control method for carbon nanoparticles synthesis / I. V. Osipova, V. A. Lopatin [et al.] // 9th Biennial International Workshop "Fullerenes and Atomic Clusters" (IWFAC 2009) : July 6-10, 2009, St Petersburg, Russia : abstracts. - 2009. - Ст. P6.17. - P177

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Доп.точки доступа:
Osipova, I. V.; Осипова, Ирина Владимировна; Lopatin, V. A.; Лопатин, Владислав Александрович; Vnukova, N. G.; Внукова, Наталья Григорьевна; Novikov, P. V.; Новиков, Павел Вадимович; Churilov, G. N.; Чурилов, Григорий Николаевич; "Fullerenes and Atomic Clusters", Biennial International Workshop(9 ; 2009 ; JUL)
}
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12.

Enrichment of a fullerene mixture with endohedral metallofullerenes: methodology and evaluation / N. G. Vnukova, N. S. Nikolaev, L. S. Bartseva [et al.] // Fuller. Nanotub. Carbon Nanostructures. - 2024, DOI 10.1080/1536383X.2024.2338524. - Cited References: 46 . - Article in press. - ISSN 1536-383X. - ISSN 1536-4046
Кл.слова (ненормированные):
endohedral metallofullerene -- enrichment -- Lewis acids -- high performance liquid chromatography -- numerical integration of the spectra
Аннотация: A fullerene mixture was enriched with endohedral metallofullerenes (EMF) using Lewis acid (TiCl4), which took 22 min, whereas the standard method requires about 8 h. An algorithm for assessing small-area chromatographic peaks has been proposed, which has improved the accuracy of determination. For example, the area of the C84 peak was 4.24% using the developed program, while the use of chromatograph software estimated the area of this peak to be 1.78%.

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Держатели документа:
Kirensky Institute of Physics, FSBSI "Federal Research Center "Krasnoyarsk Science Center SB RAS", Krasnoyarsk, Russia
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, Russia
Institute of Non-Ferrous Metals Department of Organic and Analytical Chemistry, Siberian Federal University, Krasnoyarsk, Russia

Доп.точки доступа:
Vnukova, N. G.; Внукова, Наталья Григорьевна; Nikolaev, N. S.; Николаев, Никита Сергеевич; Bartseva, L. S.; Барцева, Любовь Сергеевна; Kastiuk, M. R.; Кастюк, Мария Романовна; Elesina, V. I.; Елесина, Виктория Игоревна; Isakova, V. G.; Исакова, Виктория Гавриловна; Churilov, G. N.; Чурилов, Григорий Николаевич
}
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13.

Express analysis of endohedral fullerenes amount contained at fullerene mixture / G. N. Churilov [et al.] // Наносистемы: физ., хим., матем. - 2016. - Т. 7, № 1. - С. 140-145 ; Nanosystems: phys., chem., mathem., DOI 10.17586/2220-8054-2016-7-1-140-145. - Библиогр.: 7. - The work was supported by the Ministry of Education and Science of Russia (Russian-Japanese joined project, Agreement N 14.613.21.0010, ID RFMEFI61314X0010). . - ISSN 2220-8054
Кл.слова (ненормированные):
endohedral fullerene -- atom emission spectroscopy -- quantitative assessment
Аннотация: This paper describes the technique for rapid determination of endohedral metallofullerene (EMF) content in a fullerene mixture (FM). The methods of mass spectroscopy and atom emission element analysis underlay at the technique. By the method of mass spectroscopy, the type of EMF with atom-guest is registered and by the method of emission spectroscopy, the quantity of that element which is contained in the FM is determined. The technique may be used for rapid determination of EMF weight percents in the FM in the specific case if only one type of EMF is present, and of EMF average content if there are different types of EMF are present. The technique is demonstrated through the example of analysis of FM with Y, which was extracted from the carbon condensate (CC) by different solvents (C5H5N and CS2).

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Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Popov, A. A.; Gulyaeva, U. E.; Гуляева, Ульяна Евгеньевна; Samoylova, N. A.; Vnukova, N. G.; Внукова, Наталья Григорьевна; Kolonenko, A. L.; Колоненко, Андрей Леонидович; Isakova, V. G.; Исакова, Виктория Гавриловна; Dudnik, A. I.; Дудник, Александр Иванович; Koravanets, V. S.

}
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14.

Feature of the endohedral metallofullerene Y@C82 and Gd@C82 polymerization under high pressure / V. V. Zhukov, S. V. Erohin, V. D. Churkin [et al.] // J. Phys. Chem. C. - 2022. - Vol. 126, Is. 40. - P. 17366-17373, DOI 10.1021/acs.jpcc.2c05139. - Cited References: 35. - The authors gratefully acknowledge the financial support of the RFBR (project identifier: 18-29-19080). V.D.C. acknowledges the support of the RFBR (project identifier: 20-32-90038). M.Y.P. acknowledges the support of the Ministry of Science and Higher Education of the Russian Federation in the framework of the State Task (project code 0718-2020-0037) for Raman study, interpretation, and discussion of obtained results and Russian Science Foundation (project #20-12-00097) for investigation of fullerite mechanical properties. V.V.Z., S.V.E., and P.B.S. acknowledge the support of the Ministry of Science and Higher Education of the Russian Federation in the framework of the strategic academic leadership program “Priority 2030” (no. K6-2022-041). The calculations were performed at the supercomputer cluster provided by the Materials Modeling and Development Laboratory at NUST “MISIS” and the Joint Supercomputer Center of the Russian Academy of Sciences. The authors thank the staff of the Information Technology Department of the Moscow Institute of Physics and Technology and express their gratitude to the Data Center Group for their help in performing calculations . - ISSN 1932-7447
Кл.слова (ненормированные):
Fullerenes -- Diamond anvil cell technique -- Endohedral metallofullerenes -- Experimental approaches -- Fullerene cages -- Gadolinia -- High bulk modulus -- High pressure -- Low pressures -- Polymerized material -- Theoretical approach -- Polymerization
Аннотация: In the present work, the polymerization of endohedral metallofullerenes (EMFs) with gadolinium (Gd@C82) and yttrium atoms (Y@C82) at high pressures achieved using the shear diamond anvil cell technique is studied using both theoretical and experimental approaches. It is found that in contrast to pure fullerenes, EMF polymerization starts at lower pressures with similar behavior for both metals inside the fullerene cage. EMF polymerization occurs smoothly and finally leads to a significant increase in the number of interfullerene bonds at pressures higher than ∼20 GPa. Finally, a high bulk modulus of both EMF-polymerized materials is obtained using Raman spectra.

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Держатели документа:
Technological Institute for Superhard and Novel Carbon Materials, Troitsk, Moscow, 108840, Russian Federation
National University of Science and Technology MISiS, Moscow, 119049, Russian Federation
Moscow Institute of Physics and Technology, Dolgoprudniy, Moscow, 141701, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334, Russian Federation
Institute of Chemistry and Chemical Technology, The Siberian Branch of the RAS, Federal Research Center KSC Siberian Branch Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Zhukov, V. V.; Erohin, S. V.; Churkin, V. D.; Vnukova, N. G.; Внукова, Наталья Григорьевна; Antipina, L. Y.; Elesina, V. I.; Елесина, Виктория Игоревна; Visotin, M. A.; Высотин, Максим Александрович; Tomashevich, Y. V.; Popov, M. Y.; Churilov, G. N.; Чурилов, Григорий Николаевич; Sorokin, P. B.; Fedorov, A. S.; Федоров, Александр Семенович
}
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15.

    Filtration process combined with mechanical action, as a method for efficient extraction of endohedral metallofullerenes from carbon soot / V. I. Elesina [et al.] // Fuller. Nanotub. Carbon Nanostruct. - 2019. - Vol. 27, Is. 10. - P. 803-807, DOI 10.1080/1536383X.2019.1648439. - Cited References: 22 . - ISSN 1536-383X
   Перевод заглавия: Процесс фильтрации, совмещенный с механическим воздействием, как метод эффективного выделения эндоэдральных металлофуллеренов из углеродной сажи
Кл.слова (ненормированные):
Fullerenes -- solvent extraction -- mechanical extraction -- Soxhlet -- turbulent flow
Аннотация: The paper presents results of fullerenes and endohedral metallofullerenes extracts studies, isolated from the graphite rods carbon soot spray, and containing Y2O3 in a high frequency arc discharge. Two ways of extraction were applied and compared–(1) the classic method of Soxhlet extraction, and (2) the one developed by our team–extraction based on mechanical action combined with filtration. To implement the method, we used a laboratory version of installation, embodying technical solutions for rapid extraction. Chromatographic and mass spectrometry studies of fullerene extracts obtained by these methods revealed that by combining mechanical action with simultaneous filtration, we can significantly intensify and reduce the process of extracting fullerenes and endohedral metallofullerenes compared to the Soxhlet extraction method. This is especially evident in the release of endohedral metallofullerenes. Our method allows to reduce the release time of fullerenes from 10 g of carbon soot on laboratory installation up to 15 minutes, against the Soxhlet extraction method taking 18 hours. Whilst, the total number of fullerenes extracted by both methods almost coincides (the extraction method using mechanical action allowed us to extract 0.2-0.4 wt. % more), the composition of the isolated fullerene mixtures is different. The relative content of higher fullerenes and endohedral metallofullerenes exceeds when the mechanical action-based extraction method applied. © 2019, © 2019 Taylor & Francis Group, LLC.

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Держатели документа:
FSBSI “Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russian Federation
Siberian Federal University, Institute of Engineering Physics and Radio Electronics, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Elesina, V. I.; Елесина, Виктория Игоревна; Churilov, G. N.; Чурилов, Григорий Николаевич; Vnukova, N. G.; Внукова, Наталья Григорьевна; Dudnik, A. I.; Дудник, Александр Иванович; Osipova, I. V.; Осипова, Ирина Владимировна
}
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16.

Graphene biribbons: the features of electronic properties [Text] / L. A. Chernozatonskii, P. B. Sorokin // 9th Biennial International Workshop "Fullerenes and Atomic Clusters" (IWFAC 2009) : July 6-10, 2009, St Petersburg, Russia : abstracts. - 2009. - Ст. P2.3. - P74

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Доп.точки доступа:
Chernozatonskii, L.A.; Sorokin, P.B.; "Fullerenes and Atomic Clusters", Biennial International Workshop(9 ; 2009 ; JUL)
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17.

Influence of Acoustic and Magnetic Fields on the Formation of Fullerenes and Nano tubes in Carbon-Helium High-Frequency Plasma under Atmospheric [Text] / Churilov G.N.Osipova I.V. [et al.] // Pressure Fullerenes, Nano tubes and Carbon Nanostructures. - 2010. - Vol. 18, Is. 04-06. - P584–589

Доп.точки доступа:
Churilov, G.N.; Osipova, I.V.; Novikov, P.V.; Lopatin, V.A.; Krylov, A.S.; Tomashevic, Ye; Petrakovskaya, E.A.
}
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18.

Influence of plasma parameters on formation rate of fullerenes, nanotubes and nanoparticles [Text] / I. V. Osipova, G. N. Churilov, P. V. Novikov // Hydrogen materials science and chemistry of carbon nanomaterials (ICHMS '2009) : XI International Conference, Yalta - Crimea - UKRAINE, August 25-31, 2009. - 2009. - P. 368-371. - Библиогр.: 9. - The work was supported by RFBR foundation (project RFBR 08-08-00521-a, RFBR 09-03-00383-a)

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Публикация на русском языке: Влияние параметров плазмы на скорости образования фуллеренов, нанотрубок и наночастиц [Текст] / I. V. Osipova, G. N. Churilov, P. V. Novikov // Водородное материаловедение и химия углеродных наноматериалов (ICHMS '2009) : XI Международная Конференция Ялта - Крым - Украина, 25-31 Августа , 2009. - 2009.- P.370-371

Доп.точки доступа:
Osipova, I. V.; Churilov, G. N.; Novikov, P.V.; "Hydrogen materials science and chemistry of carbon nanomaterials", International Conference(11 ; 2009 ; Aug. ; Yalta)
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19.

Influence of sonic and magnetic fields on fullerene and nanotube formation in carbon-helium plasma of high frequency at atmospheric pres?sure / G. N. Churilov, I. V. Osipova [et al.] // 9th Biennial International Workshop "Fullerenes and Atomic Clusters" (IWFAC 2009) : July 6-10, 2009, St Petersburg, Russia : abstracts. - 2009. - Ст. P5.7. - P114

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Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Osipova, I. V.; Осипова, Ирина Владимировна; Marchenko, S. A.; Gulyaeva, U. E.; "Fullerenes and Atomic Clusters", Biennial International Workshop(9 ; 2009 ; JUL)
}
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20.

    Magnesium Boride Nanotubes: Relative Stability and Atomic and Electronic Structure / P. B. Sorokin [et al.] // J. Phys. Chem. C. - 2010. - Vol. 114, Is. 11. - P. 4852-4856, DOI 10.1021/jp9112014. - Cited Reference Count: 38. - Гранты: P.B.S. and B.I.Y. acknowledge support by the Basic Energy Sciences division of the Department of Energy, award DE-SC0001479. L.A.C. was supported by the Russian Academy of Sciences, program No. 21. P.V.A ad P.B.S. also acknowledge the collaborative RFBR-JSPS grant No. 09-02-92107-R Phi. We are grateful to the Joint Supercomputer Center of the Russian Academy of Sciences for the possibility of using a cluster computer for quantum chemical calculations. The geometry of all presented structures was visualized by commercial ChemCraft software (http://www.chemcraftprog.com). - Финансирующая организация: Basic Energy Sciences division of the Department of Energy [DE-SC0001479]; Russian Academy of Sciences [21]; RFBR-JSPS [09-02-92107-RPhi] . - MAR 25. - ISSN 1932-7447
Рубрики:
BORON
   PSEUDOPOTENTIALS
   FULLERENES
   SIMULATION
   FORM
Кл.слова (ненормированные):
Basic composition -- Bending behavior -- Comparative studies -- Diborides -- Energy analysis -- Energy minima -- Magnesium atom -- Magnesium boride -- MgB2 -- Relative stabilities -- Semiconducting behavior -- Small-diameter -- Staggered configuration -- Sub-lattices -- Bending (forming) -- Borides -- Boron -- Electronic properties -- Electronic structure -- Energy management -- Magnesium -- Nanotubes -- Density functional theory
Аннотация: A comparative study of file energies and the electronic structure of MgBx nanotubes is performed within the framework of the density functional theory. Different basic compositions (x = 2 for diboride and x = 3 for triboride) and different diameters (3 angstrom < D < 18 angstrom), as well the exterior, interior, and staggered placement of magnesium atoms, are considered. Energy analysis reveals a nontrivial bending behavior of the MgB2 sheets. such that the tubes with exterior and staggered configurations display the energy minima at certain small diameters (of the boron cage sublattice). The semiconducting behavior of narrow MgB2 nanotubes with exterior Mg position was observed.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Rice Univ, Dept Mech Engn & Mat Sci, Houston, TX 77251 USA
Rice Univ, Dept Chem, Houston, TX 77251 USA
Russian Acad Sci, Emanuel Inst Biochem Phys, Moscow 119334, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Sorokin, P. B.; Avramov, P.V.; Yakobson, B.I.; Chernozatonskii, L.A.
}
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