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    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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Markevich, I. A.
Impedance Spectroscopy Study of a Polymer Composite with Carbon Nanotubes in Contact with an Electrolyte / I. A. Markevich, N. A. Drokin, G. E. Selyutin // Tech. Phys. - 2019. - Vol. 64, Is. 9. - P. 1324-1329, DOI 10.1134/S1063784219090093. - Cited References: 14 . - ISSN 1063-7842. - ISSN 1090-6525

РУБ Physics, Applied
Рубрики:
BEHAVIOR
CONDUCTIVITY
RELAXATION
Кл.слова (ненормированные):
impedance spectroscopy -- nanotubes -- electrolyte
Аннотация: The measured frequency dependence of the electric impedance of a composite based on ultra-high molecular weight polyethylene reinforced with carbon nanotubes in contact with an electrolyte is presented. The behavior of the active and reactive impedance components, permittivity, and conductivity in the frequency range from 0.1 Hz to 120 MHz is analyzed. An equivalent electric circuit simulating the dispersion of the impedance of the polymer composite making contact with the electrolyte is proposed. The formation of a double electric layer at the interface between the polymer composite and electrolyte layer is demonstrated and the electrical characteristics of this layer are determined.

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Публикация на русском языке Маркевич И. А. Исследование методом импедансной спектроскопии полимерного композита с углеродными нанотрубками в контакте с электролитом [Текст] / И. А. Маркевич, Н. А. Дрокин, Г. Е. Селютин // Журн. техн. физ. - 2019. - Т. 89 Вып. 9. - С. 1400-1405

Держатели документа:
Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Drokin, N. A.; Дрокин, Николай Александрович; Selyutin, G. E.
}
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Thermoelectric properties of low-cost transparent single wall carbon nanotube thin films obtained by vacuum filtration / I. A. Tambasov [et al.] // Physica E. - 2019. - Vol. 114. - Ст. 113619, DOI 10.1016/j.physe.2019.113619. - Cited References: 53. - The study was carried out by a grant of Russian Science Foundation (project No. 17-72-10079). The electron microscopy examination was carried out at the Center for Collective Use of the Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences (Krasnoyarsk, Russia). V.A.E. and E.D.O. thank RFFI-18-32-00998_mol_a and RFFI-19-02-00859_a projects for support of development of two aqueous phase technique for nanotube separation. . - ISSN 1386-9477
Кл.слова (ненормированные):
Single-wall carbon nanotubes -- Aqueous two-phase extraction -- Semiconducting and metallic SWNTs -- Thin SWNT films -- Thermoelectric properties -- Thermoelectric figure of merit
Аннотация: The dispersions of semiconducting (sc-) and metallic (m-) SWCNTs with purity more than 98 and 86%, correspondingly, were obtained by using the aqueous two-phase extraction method. The unseparated (un-) SWCNTs contained ~3/4 of semiconducting and ~1/4 of metallic nanotubes. Thin films based on unseparated, semiconducting and metallic SWCNTs were prepared by vacuum filtration method. An Atomic Force Microscopy (AFM) and a Transmission Electronic Microscopy (TEM) were used to investigate the thin film microstructure. The thin SWCNT film transmittance was measured in the wavelength range of 300–1500 nm. Thermoelectric properties were carried out in the temperature range up to 200 °C. The largest Seebeck coefficient was observed for thin films based on semiconducting SWCNTs. The maximum value was 98 μV/K under the temperature of 170 °C. The lowest resistivity was 7.5·10−4·Ohm·cm at room temperature for thin un-SWCNT films. The power factor for m-SWCNT and un-SWCNT films was 47 and 213 μW m−1 K−2, correspondingly, at room temperature and 74 and 54 μW m−1 K−2 at 200 °C, respectively. For a thin sc-SWCNT film the maximum power factor was 2.8 μW m−1 K−2 at 160 °C. The un-SWCNT film thermal conductivity coefficient was 5.63 and 3.64 W m−1 K−1 and a thermoelectric figure of merit was 0.011 and 0.016 at temperatures of 23 and 50 °C, respectively.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk Scientific Center, Federal Research Center KSC Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center KSC Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Sciences and Technologies, Krasnoyarsky Rabochy Avenue 31, Krasnoyarsk, 660037, Russian Federation
Siberian Federal University, Svobodny Avenue 79, Krasnoyarsk, 660041, Russian Federation
Prokhorov General Physics Institute of RAS, Vavilov Street 38, Moscow, 119991, Russian Federation
Moscow Institute of Physics and Technology, Institutskiy per.9, Dolgoprudny, Moscow Region, 141701, Russian Federation
Lobachevsky State University of Nizhny Novgorod, Gagarin Avenue 23/3, Nizhny Novgorod, 603950, Russian Federation

Доп.точки доступа:
Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Voronin, A. S.; Evsevskaya, N. P.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Fadeev, Y. V.; Simunin, M. M.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Smolyarova, T. Е.; Abelian, S. R.; Абелян, Сергей Рубенович; Tambasova, E. V.; Gornakov, M. O.; Горнаков, М. О.; Eremina, V. A.; Kuznetsov, Y. M.; Dorokhin, M. V.; Obraztsova, E. D.
}
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Thermoelectric properties of optically transparent thin films based on single-walled carbon nanotubes / I. A. Tambasov [et al.] // Fourth Asian school-conference on physics and technology of nanostructured materials (ASCO-NANOMAT 2018) : proceedings. - Vladivostok, 2018. - P. 88-89

Материалы конференции

Доп.точки доступа:
Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Voronin, A. S.; Evsevskaya, N. P.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Abelyan, S. R.; Tambasova, E. V.; Asian School-Conference on Physics and Technology of Nanostructured Materials(4 ; 2018 ; Sept. ; 23-28 ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(4 ; 2018 ; сент. ; 23-28 ; Владивосток); Институт автоматики и процессов управления ДВО РАН; Дальневосточный федеральный университет
}
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Structural and Thermoelectric Properties of Optically Transparent Thin Films Based on Single-Walled Carbon Nanotubes / I. A. Tambasov [et al.] // Phys. Solid State. - 2018. - Vol. 60, Is. 12. - P. 2649-2655, DOI 10.1134/S1063783418120296. - Cited References: 31. - This work was supported by the Russian Science Foundation (project no. 17-72-10079). . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter

Аннотация: Thin films have been produced via a spray method from commercially available single-walled carbon nanotubes (SWCNTs). A SWCNT film thickness has ranged from ~10 to ~80 nm. The SWCNT diameter has accepted values of 1.6–1.8 nm. The existence of SWCNTs longer than 10 μm is established. The optimal thickness of a SWCNT thin film is found to be ~15 nm at which the transmittance exceeds 85%. The specific resistance of SWCNT thin films goes from ~1.5 × 10–3 to ~3 × 10–3 Ohm cm at room temperature. The pioneering study of the temperature dependences of the Seebeck coefficient and surface resistance is performed for this type of SWCNT. A surface resistance is found to increase with rising temperature. Furthermore, the Seebeck coefficient of SWCNT thin films weakly depends on temperature. Its value for all samples is evaluated to be ~40 μV/K. According to the sign of the Seebeck coefficient, thin films exhibit hole-type conductivity. Moreover, the power factor of a 15-nm thin SWCNT-film decreases with a temperature increase to 140◦C from the value of approximately ~120 to ~60 μW m–1 K–2. A further rise in temperature has led to a gain in the power factor.

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Публикация на русском языке Структурные и термоэлектрические свойства оптически прозрачных тонких пленок на основе одностенных углеродных нанотрубок [Текст] / Тамбасов И.А. [и др.] // Физ. тверд. тела. - 2018. - Т. 60 Вып. 12. - С. 2456-2462

Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Phys, Kransoyarsk, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Kransoyarsk, Russia.
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Kransoyarsk, Russia.
Siberian State Univ Sci & Technol, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Voronin, A. S.; Evsevskaya, N. P.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Fadeev, Yu. V.; Krylov, A. S.; Крылов, Александр Сергеевич; Aleksandrovskii, A. S.; Александровский, Александр Сергеевич; Luk'yanenko, A. V.; Лукьяненко, Анна Витальевна; Abelyan, S. R.; Абелян, Сергей Рубенович; Tambasova, E. V.; Russian Science Foundation [17-72-10079]
}
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Influence of ultrasonic treatment on mechanical and electro-physical characteristics of UHMWPE/MWCNT composites / I. A. Markevich, G. Y. Selyutin, V. A. Poluboyarov [et al.] // Mater. Today: Proc. - 2020. - Vol. 25. - P. 532-535, DOI 10.1016/j.matpr.2020.02.746. - Cited References: 20 . - ISSN 2214-7853
Рубрики:
NANOCOMPOSITE
Кл.слова (ненормированные):
Multi-walled carbon nanotubes -- Ultra-high molecular weight polyethylene -- Composite -- Ultrasonic treatment -- Polymer structure
Аннотация: The influence of ultrasonic treatment on the strength and dielectric properties of composites based on ultra-high molecular weight polyethylene (UHMWPE) and multi-walled carbon nanotubes (MWCNT) is studied. It is revealed that the ultrasonic treatment of composite melt at 130 °C results in the uniform distribution of nanotubes in the UHMWPE matrix, an increase in the degree of composite crystallinity by 10%, an increase in abrasion resistance by 37%, an increase in elongation at rupture by a factor of 2. The change in the physical and mechanical properties of the composite is caused by the change in the polymer matrix structure, taking place as a result of ultrasonic action, and does not depend on the presence of nanotubes in the polymer matrix.

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Держатели документа:
RAS, SB, Inst Chem & Chem Technol, Res Ctr,Krasnoyarsk Sci Ctr, 50,Bil 24, Krasnoyarsk 660036, Russia.
RAS, SB, Inst Solid State Chem & Mechanochem, Kutateladze,18, Novosibirsk 630128, Russia.
RAS, Siberian Branch, Kirensky Inst Phys, 50,Bil 38, Krasnoyarsk 660036, Russia.
RAS, SB, Boreskov Inst Catalysis, Fed Res Ctr, Novosibirsk 630090, Russia.

Доп.точки доступа:
Markevich, I. A.; Selyutin, G. Ye.; Poluboyarov, V. A.; Drokin, N. A.; Дрокин, Николай Александрович; Selyutin, A. G.; Matzko, M. A.; All-Russian Conference (with International Participation) "Hot Topics of Solid State Chemistry : From New Ideas to New Materials"(3rd ; Oct. 01-05, 2019 ; Novosibirsk, Russia)
}
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Nonequilibrium carbon black suspensions used in synthesis of polymer composite material / O. P. Stebeleva, L. V. Kashkina, E. A. Petrakovskaya [et al.] // Journal of Physics: Conference Series. - 2020. - Vol. 1515, Is. 2. - Ст. 022003, DOI 10.1088/1742-6596/1515/2/022003. - Cited References: 9
Кл.слова (ненормированные):
Carbon black -- Carbon nanotubes -- Composite coatings -- Embedded systems -- Fillers -- Foams -- Polymer matrix composites -- Polyurethanes
Аннотация: Nowadays polymer matrix-based composite material with various carbon fillers are widely used to protect radioequipment from different interference, to improve characteristics of radar absorbing coatings. Current synthesis processes are sophisticated and rather costly. The challenge is to develop new methods of producing composite materials by efficient knowledge intensive technologies to reduce the cost of products. The paper studies possibility of producing composite material on the basis of elastic polyurethane foam with carbon fillers using polyurethane impregnation in nonequilibrium black carbon suspension. Suspension composition: running water and carbon-bearing powders of nanometer range: fullerene black carbon, Taunite (multi-layer carbon nano tube material), technical carbon T900, wood soot. Nonequilibrium suspension was produced by treatment in hydrodynamic generator of rotor type (cavitation mode). Angular rotation speed of the rotor ω = 10000 rpm.

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Держатели документа:
Siberian Federal University, Svobodnyy Ave 79, Krasnoyarsk, 660049, Russian Federation
Federal Research Center, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, L.V. Kirensky Institute of Physics Sb Ras, Akademgorodok, 50, Krasnoyarsk, 660036, Russian Federation
Fed. Res. Ctr. krasnoyarsk Sci. Ctr. of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Stebeleva, O. P.; Kashkina, L. V.; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Rubleva, T. V.; Nikitin, S. L.; Vshivkova, O. A.; International Scientific Conference on Metrological Support of Innovative Technologies(2 ; 2020 ; 4 March ; Krasnoyarsk)
}
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Electrophysical properties of composites based on polyethylene modified with multi-walled carbon nanotubes with high content of Fe-Co-catalyst / S. I. Moseenkov, V. L. Kuznetsov, A. V. Zavorin [et al.] // Russ. J. Appl. Chem. - 2020. - Vol. 93, Is. 4. - P. 586-594, DOI 10.1134/S107042722004014X. - Cited References: 30. - This work was financially supported by the Russian Science Foundation, project no. 17-73-20293. . - ISSN 1070-4272. - ISSN 1608-3296

РУБ Chemistry, Applied
Рубрики:
POLYMER COMPOSITES
   NANOPARTICLES
   ACTIVATION
   NANOCOMPOSITES
Кл.слова (ненормированные):
multi-walled carbon nanotubes -- ferromagnetic catalyst particles -- polymer composites -- mechanical mixing in the melt -- gigahertz range -- electromagnetic absorption
Аннотация: The effect of the residual catalyst for the synthesis of multi-walled carbon nanotubes (MWCNTs) on the electrophysical properties of MWCNT-polyethylene composites produced by melt mechanical mixing was studied. The residual catalyst content was varied by changing the MWCNTs synthesis time. The nanotubes used in the work were characterized using transmission and scanning electron microscopy, atomic emission analysis, X-ray phase analysis, and magnetic permeability measurements. The structure of the synthesized composites was studied using optical and scanning electron microscopy. The dependences of the specific magnetization on the applied magnetic field, bulk electrical conductivity on the volumetric content of the filler in the composite, and the frequency dependences of the reflection, transmission, and absorption of electromagnetic radiation in the range 0.01-18 GHz were obtained. It was established that the obtained composites are characterized by a uniform distribution of nanotubes in the polymer matrix, and the dependence of the bulk electrical conductivity on the content of MWCNTs in the composite has a percolation character. Variation in the synthesis time of nanotubes allows producing MWCNTs with a high content of ferromagnetic particles, which are an alloy close in stoichiometry to the composition of the active component of the catalyst. It was shown that the use of composites modified with MWCNTs with a high content of residual catalyst is more effective for absorbing electromagnetic radiation due to an increase in their magnetic losses.

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Публикация на русском языке Электрофизические свойства композитов на основе полиэтилена, модифицированного многослойными углеродными нанотрубками с высоким содержанием Fe-Co-катализатора [Текст] / С. И. Мосеенков, В. Л. Кузнецов, А. В. Заворин [и др.] // Журн. прикл. химии. - 2020. - Т. 93 № 4. - С. 581-590

Держатели документа:
Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, Novosibirsk 630090, Russia.
Novosibirsk Natl Res State Univ, Novosibirsk 630090, Russia.
Natl Res Tomsk State Univ, Tomsk 634050, Russia.
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Moseenkov, S. I.; Kuznetsov, V. L.; Zavorin, A. V.; Golubtsov, G. V.; Korovin, E. Yu.; Suslyaev, V. I.; Ishchenko, A. V.; Serkova, A. N.; Sergeenko, D. I.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Russian Science FoundationRussian Science Foundation (RSF) [17-73-20293]
}
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Fel'k, V. A.
Ferromagnetic resonance in micro and nanotubes / V. A. Fel'k, S. V. Komogortsev // Euro-asian symposium "Trends in magnetism" (EASTMAG-2019) : Book of abstracts / чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 1. - Ст. B.P17. - P. 189-190. - Cited References: 1. - The study was carried out with the financial support of the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Region, the Krasnoyarsk Regional Science Foundation as part of the research project No. 18-42-240006 ”Nanomaterials with magnetic properties determined by topological features of the nanostructure” . - ISBN 978-5-9500855-7-4

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russia

Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Российская академия наук; Уральское отделение РАН; Институт физики металлов им. М. Н. Михеева Уральского отделения РАН; Уральский федеральный университет им. первого Президента России Б.Н. Ельцина; Российский фонд фундаментальных исследований; Euro-Asian Symposium "Trends in MAGnetism"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg); "Trends in MAGnetism", Euro-Asian Symposium(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
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10.

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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