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1.
Influence of Magnetic
Nanoparticles
on Cells of Ehrlich Ascites Carcinoma / S. Stolyar, O. Kryukova, R. Yaroslavtsev, and N. Latyshev> //
65th Annual conference on мagnetism and мagnetic мaterials (MMM-2020) : abstract book. - 2020. - Ст. Q5-07. - P. 530. - Cited References: 1
Перевод заглавия:
Высоко-индукционные пленки FeCo: Зеленый синтез и магнитные свойства
Материалы конференции
, , ,
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Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Kryukova, O. V.; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Latyshev, N. V.; Annual conference on мagnetism and мagnetic мaterials(65 ; 2020 ; 2-6 Nov. ; Virtual Conference)
}
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2.
Magnetic Hysteresis of
Blocked Ferrihydrite
Nanoparticles
/ S. Komogortsev, D. Balaev, A. Krasikov, S. Stolyar, R. Yaroslavtsev, V. Ladygina and R. Iskhakov> //
65th Annual conference on мagnetism and мagnetic мaterials (MMM-2020) : abstract book. - 2020. - Ст. C4-02. - P. 74
Перевод заглавия:
Высоко-индукционные пленки FeCo: Зеленый синтез и магнитные свойства
Материалы конференции
, , ,
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Доп.точки доступа:
Komogortsev, S. V.; Комогорцев, Сергей Викторович; Balaev, D. A.; Балаев, Дмитрий Александрович; Krasikov, A. A.; Красиков, Александр Александрович; Stolyar, S. V.; Столяр, Сергей Викторович; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Annual conference on мagnetism and мagnetic мaterials(65 ; 2020 ; 2-6 Nov. ; Virtual Conference)
}
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3.
Magnetic
Nanoparticles
for
Extracting DNA from Blood Cells / A. V. Komina, R. N. Yaroslavtsev, Y. V. Gerasimova [et al.]> // Bull. Russ. Acad. Sci. Phys. - 2020. -
Vol. 84
,
Is. 11
. - P. 1362-1365,
DOI
10.3103/S1062873820110155. - Cited References: 15 . - ISSN 1062-8738
Кл.слова (ненормированные):
Blood cells
--
Extraction process
--
Genomic DNA
--
Iron
nanoparticles
--
Magnetic particle
Аннотация:
A technique for extracting DNA from blood cells using magnetic particles offers the advantage of saving time and prospects of automating the extraction process. A way of obtaining magnetic iron
nanoparticles
for extracting DNA from blood cells is developed. Magnetic
nanoparticles
with characteristics suitable for extracting genomic DNA from leukocytes are obtained and investigated.
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Публикация на русском языке
Магнитные частицы для выделения ДНК из клеток крови [Текст] / А. В. Комина, Р. Н. Ярославцев, Ю. В. Герасимова [и др.] // Изв. РАН. Сер. физич. - 2020. - Т. 84 № 11. - С. 1597-1600
Держатели документа:
Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
National Research Center for Hematology, Krasnoyarsk Branch, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Astrakhan State University, Astrakhan, 414056, Russian Federation
Al-Qasim Green University, College of Biotechnology, Babylon, 00964, Iraq
Доп.точки доступа:
Komina, A. V.; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Gerasimova, Yu. V.; Герасимова, Юлия Валентиновна; Stolyar, S. V.; Столяр, Сергей Викторович; Olkhovsky, I. A.; Bairmani, M. S.
}
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4.
Study of plasmons
and thermoelectric properties of
nanoparticles
connected by thin conductive bridges / A. S. Fedorov, P. O. Krasnov, M. A. Visotin, H. Ågren> //
The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials : Proceedings. - VLadivostok : Dalnauka Publishing, 2020. - Ст. VI.30.03o. - P. 168. - This study was supported by the Russian Science Foundation, project no. 16-13-00060. . - ISBN 978-5-8044-1698-1
Материалы конференции
,
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Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Krasnov, P.O.; Visotin, M. A.; Высотин, Максим Александрович; Ågren, H.; Asian School-Conference on Physics and Technology of Nanostructured Materials(5 ; 2020 ; 30 Jul - 3 Aug ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(5 ; 2013 ; 30 июля - 3 авг. ; Владивосток)
}
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5.
Magneto-optical properties of
Ge
nanoparticles
in the GeO matrix / A. V. Sherepa, V. N. Zabluda, K. N. Astankova [et al.]> //
The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials : Proceedings. - VLadivostok : Dalnauka Publishing, 2020. - Ст. II.31.02p. - P. 77 . - ISBN 978-5-8044-1698-1
Материалы конференции
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Доп.точки доступа:
Sherepa, A. V.; Zabluda, V. N.; Заблуда, Владимир Николаевич; Astankova, K. N.; Azarov, I. A.; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Asian School-Conference on Physics and Technology of Nanostructured Materials(5 ; 2020 ; 30 Jul - 3 Aug ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(5 ; 2013 ; 30 июля - 3 авг. ; Владивосток)
}
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6.
Pugachevskii, M. A.
Theoretical and experimental studies of structural defects in CeO2
nanoparticles
/ M. A. Pugachevskii, A. N. Chibisov, A. S. Fedorov> //
The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials : Proceedings. - VLadivostok : Dalnauka Publishing, 2020. - Ст. I.30.06o. - P. 45 . - ISBN 978-5-8044-1698-1
Материалы конференции
,
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Доп.точки доступа:
Chibisov, A.N.; Fedorov, A. S.; Федоров, Александр Семенович; Asian School-Conference on Physics and Technology of Nanostructured Materials(5 ; 2020 ; 30 Jul - 3 Aug ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(5 ; 2013 ; 30 июля - 3 авг. ; Владивосток)
}
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7.
Obtaining and properties
of biomagnetic nanoconjugates based on DNA aptamers and magnetic
nanoparticles
for magnetodynamic cell therapy / A. Е. Sokolov, A. V. Kurilova, V. A. Svetlichniy [et al.]> //
The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials : Proceedings. - VLadivostok : Dalnauka Publishing, 2020. - Ст. V.01.17o. - P. 147 . - ISBN 978-5-8044-1698-1
Материалы конференции
,
Читать в сети ИФ
Доп.точки доступа:
Sokolov, A. Е.; Соколов, Алексей Эдуардович; Kurilova, A. V.; Svetlichniy, V. A.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Sherepa, A. V.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Goncharova, D. A.; Shabalina, A. V.; Asian School-Conference on Physics and Technology of Nanostructured Materials(5 ; 2020 ; 30 Jul - 3 Aug ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(5 ; 2013 ; 30 июля - 3 авг. ; Владивосток)
}
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8.
Magnetic and optical
properties of
nanoparticles
of iron and nickel decorated with gold and the possibility of their medical use / A. V. Kurilova, A. Е. Sokolov, A. V. Sherepa [et al.]> //
Pulsed lasers and laser applications (AMPL-2019) : abstracts of XIV Int. conf. - 2019. - Ст. Y-30. - P. 30 . - ISBN 978-5-93629-634-5
Материалы конференции
Доп.точки доступа:
Kurilova, A. V.; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Sherepa, A. V.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Goncharova, D. A.; Shabalina, A. V.; Svetlichnyi, V.; Светличный В.; Pulsed Lasers and Laser Applications, International Conference(14 ; 2019 ; 15-20 Sept. ; Tomsk)
}
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9.
Magneto-optical properties of
the iron oxide
nanoparticles
obtained by laser ablation / A. V. Kurilova, A. Е. Sokolov, A. V. Sherepa [et al.]> //
Pulsed lasers and laser applications (AMPL-2019) : abstracts of XIV Int. conf. - 2019. - Ст. B-12. - P. 61-62 . - ISBN 978-5-93629-634-5
Материалы конференции
Доп.точки доступа:
Sokolov, A. Е.; Соколов, Алексей Эдуардович; Kurilova, A. V.; Sherepa, A. V.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Goncharova, D. A.; Shabalina, A. V.; Svetlichnyi, V.; Светличный В.; Pulsed Lasers and Laser Applications, International Conference(14 ; 2019 ; 15-20 Sept. ; Tomsk)
}
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10.
Influence of magnetic
nanoparticles
on cells of Ehrlich ascites carcinoma / S. V. Stolyar, O. V. Kryukova, R. N. Yaroslavtsev [et al.]> // AIP Adv. - 2021. -
Vol. 11
,
Is. 1
. - Ст. 015019,
DOI
10.1063/9.0000165. - Cited References: 22. - The electron microscopy and magnetic resonance study was carried out on the equipment of the Krasnoyarsk Territorial Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences. This work was supported by the Council of the President of the Russian Federation for State Support of Young Scientists and Leading Scientific Schools (project no. MK-1263.2020.3). The research was funded by RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science, project number 20-42-242902 . - ISSN 2158-3226
Кл.слова (ненормированные):
High resolution transmission electron microscopy
--
Iron compounds
--
Arabinogalactan
--
Ehrlich ascites carcinoma
--
EPR signals
--
Iron complex
--
NO molecule
--
Ssbauer spectroscopies
--
Magnetic
nanoparticles
Аннотация:
The effect of magnetic
nanoparticles
coated with arabinogalactan on the viability of Ehrlich ascites carcinoma (EAC) cells was studied. The
nanoparticles
were studied by transmission electron microscopy, Mossbauer spectroscopy, IR spectroscopy, and ferromagnetic resonance. A correlation between the proportion of dead EAC cells in suspension and the intensity of the EPR signal of dinitrosyl iron complexes was found. This result may be due to the presence of NO molecules.
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Держатели документа:
Krasnoyarsk Scientific Center, Federal Research Center Ksc Sb Ras, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics, Federal Research Center Ksc Sb Ras, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Stolyar, S. V.; Kryukova, O. V.; Yaroslavtsev, R. N.; Bayukov, O. A.; Баюков, Олег Артемьевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Gerasimova, Yu. V.; Герасимова, Юлия Валентиновна; Pyankov, V. F.; Latyshev, N. V.; Shestakov, N. P.; Шестаков, Николай Петрович
}
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11.
Magnetic sorting of
tumor cells with attached magnetic
nanoparticles
in a microchannel / P. Denissenko, V. V. Denisenko, I. Denisov [et al.]> //
Molecular Therapy - Nucleic Acids : book of abstracts of the 1st Int. conf. "Aptamers in Russia 2019". - 2019. -
Vol. 17
,
Suppl. 1
. - P. 14
Материалы конференции
Доп.точки доступа:
Denissenko, P.; Denisenko, V. V.; Denisov, I.; Kantsler, V.; Kolovskaya, O. S.; Коловская, О. С.; Lapin, I. N.; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Svetlichnyi, V.; Светличный, В. А.; Zabluda, V. N.; Заблуда, Владимир Николаевич; Zamay, S. S.; Замай, С. С.; Kichkailo, A.S.; Кичкайло, Анна Сергеевна; Aptamers in Russia, international conference(1 ; 2019 ; Aug. 27-30 ; Krasnoyarsk)
}
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12.
Collective Spin Glass
State in Nanoscale Particles of Ferrihydrite / S. V. Stolyar, R. N. Yaroslavtsev, V. P. Ladygina [et al.]> //
Semiconductors. - 2020. -
Vol. 54
,
Is. 12
. - P. 1710-1712
DOI
10.1134/S1063782620120362. - Cited References: 16. - This work was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, the Krasnoyarsk Regional Fund for the Support of Scientific and Technical Activities (project no. 19-42-240012 r_a “Magnetic resonance in ferrihydrite
nanoparticles
: Effects associated with the “core–shell” structure). This work was supported by a grant from the President of the Russian Federation for state support of young Russian scientists – candidates of sciences no. MK-1263.2020.3
Кл.слова (ненормированные):
nanoparticles
--
ferrihydrite
--
magnetic anisotropy
--
magnetic resonance
Аннотация:
Ferromagnetic resonance was used to study three types of ferrihydrite
nanoparticles
:
nanoparticles
formed as a result of the cultivation of microorganisms Klebsiella oxytoca; chemically prepared ferrihydrite
nanoparticles
; chemically prepared ferrihydrite
nanoparticles
doped with Cu. It is established from the ferromagnetic resonance data that the frequency-field dependence (in the temperature range ТP ‹ T ‹ T*) is described by the expression: 2πν/γ ⁼ НR + HA(T = 0)(1 – T/Т*), where γ is the gyromagnetic ratio, HR is the resonance field. The induced anisotropy HA is due to the spin-glass state of the near-surface regions. TP temperature characterizes the energy of the interparticle interaction of
nanoparticles
.
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Держатели документа:
Kirensky Institute of Physics, SB Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk Scientific Center, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Ladygina, V. P.; Balaev, D. A.; Балаев, Дмитрий Александрович; Pankrats, A. I.; Панкрац, Анатолий Иванович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; International Symposium “Nanostructures: Physics and Technology”(28th ; Sept 28 - Oct 2, 2020 ; Minsk, Republic of Belarus)
}
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13.
Synthesis, Properties, and
in vivo Testing of Biogenic Ferrihydrite
Nanoparticles
/ S. V. Stolyar, V. P. Ladygina, A. V. Boldyreva [et al.]> // Bull. Russ. Acad. Sci. Phys. - 2020. -
Vol. 84
,
Is. 11
. - P. 1366-1369,
DOI
10.3103/S106287382011026X. - Cited References: 12. - The study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk krai, the Krasnoyarsk Regional Fund for the Support of Scientific and Technical Activities (project no. 19-42-240012 r_a “Magnetic Resonance in Ferrihydrite
Nanoparticles
: Effects Associated with the Core–Shell Structure”), and the grant of the President of the Russian Federation for state support of young Russian scientists—Candidates of sciences no. MK-1263.2020.3 . - ISSN 1062-8738
Кл.слова (ненормированные):
Bacteria
--
Nanoparticles
--
Sols
--
Ferrihydrites
--
Functional activities
--
In-vivo
--
Klebsiella oxytoca
--
Laboratory animals
--
Morphological description
Аннотация:
A sol containing biogenic ferrihydrite
nanoparticles
is obtained by cultivating Klebsiella oxytoca microorganisms. Data on the physical properties of the biogenic ferrihydrite and its effect on the organism of laboratory animals are obtained using a model of experimental hemolytic anemia, according to indicators of the functional activity of erythrocytes and morphological descriptions of organs.
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Публикация на русском языке
Синтез, свойства и тестирование биогенных наночастиц ферригидрита in vivo [Текст] / С. В. Столяр, В. П. Ладыгина, А. В. Болдырева [и др.] // Изв. РАН. Сер. физич. - 2020. - Т. 84 № 11. - С. 1601-1604
Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Astrakhan State University, Astrakhan, 414056, Russian Federation
Al-Qasim Green University, College of Biotechnology, Babylon, 00964, Iraq
Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Ladygina, V. P.; Boldyreva, A. V.; Kolenchukova, O. A.; Vorotynov, A. M.; Воротынов, Александр Михайлович; Bairmani, M. S.; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович
}
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14.
Magnetic properties of
iron oxide
nanoparticles
to create aptamer bionanoconjugates / A. Е. Sokolov, V. N. Zabluda, A. V. Sherepa [et al.]> //
Molecular Therapy - Nucleic Acids : book of abstracts of the 1st Int. conf. "Aptamers in Russia 2019". - 2019. -
Vol. 17
,
Suppl. 1
. - P. 12
Материалы конференции
Доп.точки доступа:
Sokolov, A. Е.; Соколов, Алексей Эдуардович; Zabluda, V. N.; Заблуда, Владимир Николаевич; Sherepa, A. V.; Knyazev, Yu. V.; Князев, Юрий Владимирович; Volochaev, M. N.; Волочаев, Михаил Николаевич; Kurilina, A.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Goncharova, D. A.; Shabalina, A.; Шабалина Анастасия; Svetlichnyi, V.; Светличный В.; Aptamers in Russia, international conference(1 ; 2019 ; Aug. 27-30 ; Krasnoyarsk)
}
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15.
Ferrihydrite
nanoparticles
insights:
Structural characterization, lactate dehydrogenase binding and virtual screening assay / C. G. Chilom, N. Sandu, M. Balasoiu [et al.]> // Int. J. Biol. Macromol. - 2020. -
Vol. 164
. - P. 3559-3567,
DOI
10.1016/j.ijbiomac.2020.08.242. - Cited References: 64. - The work was accomplished in the frame of JINR Themes 02-1-1107-2011/2021, 04-5-1131-2017/2021 and 04-4-1121-2015/2020 and with the financial support of the RO-JINR Projects Nos. 268/21.05.2020 items 8 and 77, and 269/21.05.2020 items 11 and – 80. MB acknowledges Dr. Alexander Kuklin for assistance for SANS measurements and fruitful discussions. The authors acknowledge Dr. George Stan of the National Institute of Materials Physics for facilitating the conduct of FTIR experiments . - ISSN 0141-8130
Кл.слова (ненормированные):
Ferrihydrite
nanoparticles
--
Lactate dehydrogenase
--
Binding mechanism
--
Energy transfer
--
Thermodynamic fingerprint
--
Virtual screening
Аннотация:
The binding between the enzyme lactate dehydrogenase (LDH) and ferrihydrite
nanoparticles
(Fh-NPs) was investigated by means of small-angle neutron scattering (SANS), Fourier-transform infrared (FTIR) spectroscopy, fluorescence and Forster resonance energy transfer (FRET) and molecular docking. Fh-NPs - LDH compounds of dimensions under 100 nm are formed. The conformational changes and the mechanism of interaction between LDH and Fh-NPs simple and doped with Cu and Co, and the effect of these NPs on the thermal denaturation of LDH were monitored. The quenching mechanism is static, the binding occurring with moderate affinity, being mainly driven by hydrogen bonding and van der Waals forces. FRET occurs at a minimal distance of 2.55 nm. Thermal denaturation of LDH in the presence of simple and doped Fh-NPs shows that the thermodynamic parameters of protein unfolding are significantly changed with temperature. The denaturation temperature of LDH shifts to higher values in the presence of all Fh-NPs, than in the case of simple LDH. The docking approach estimates the energy corresponding to the best fit of the ferrihydrite in the LDH binding site near Trp. These results have direct implications on the uses of the complex of LDH with Fh-NPs in various biochemical, biological, or clinical applications.
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Держатели документа:
Faculty of Physics, University of Bucharest, Romania
Joint Institute for Nuclear Research, Dubna, Russian Federation
Moscow Institute of Physics and Technology, Dolgoprudniy, Russian Federation
“Horia Hulubei” National Institute of Physics and Nuclear Engineering, Magurele, Romania
Siberian Federal University, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, SB RAS, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Chilom, C. G.; Sandu, N.; Balasoiu, M.; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Stolyar, S. V.; Столяр, Сергей Викторович; Rogachev, A. V.
}
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16.
Magnetic anisotropy and
core-shell structure origin of the biogenic ferrihydrite
nanoparticles
/ Y. V. Knyazev, D. A. Balaev, S. V. Stolyar [et al.]> // J. Alloys Compd. - 2021. -
Vol. 851
. - Ст. 156753,
DOI
10.1016/j.jallcom.2020.156753. - Cited References: 82. - The electron microscopy study was carried out on the equipment of the Krasnoyarsk Territorial Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences. This study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Territorial Foundation for Support of Scientific and R & D Activities, project no. 19-42-240012 p-a “Magnetic Resonance in Ferrihydrite
Nanoparticles
: Effects Related to the Core–Shell Structure” . - ISSN 0925-8388
Кл.слова (ненормированные):
Ferrihydrite
--
Core-shell
nanoparticles
--
Superparamagnetism
--
Surface magnetic anisotropy
Аннотация:
Ferrihydrite is a low-crystalline nanoscale matter. The uncompensated magnetic moment of the ferrihydrite caused by the antiferromagnetic ordering of the magnetic moments of iron atoms and leads to the magnetic properties very similar to those of ferro- and ferrimagnetic
nanoparticles
. In this study, we investigated the biogenic ferrihydrite
nanoparticles
with the narrow size distribution and an average diameter of ≈2 nm obtained by the bacteria life cycle. The features caused by the surface effects and the inhomogeneous structure of ferrihydrite have been examined in the temperature range of 4–300 K using Mossbauer spectroscopy and magnetometry. Based on the Mossbauer data, we identified the superparamagnetic blocking temperature at the temperature of 30 K for the largest ferryhidrite particles. We established that the exceptional magnetic anisotropy of ferrihydrite (KV=1.2∙105 erg/cm3 and KS=0.1 erg/cm2) is reached because of the highly developed ferrihydrite nanoparticles’ surface. According to the Mossbauer data, we propose a core-shell structural model of the biogenic ferrihydrite particles. We found that the size of the dense core depends on the particle size. The well-crystallized core is formed only for
nanoparticles
larger than ≈2 nm, whereas smaller particles consist entirely of a matter with a lower density of iron atoms.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50, Bld. 38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodniy 79, Krasnoyarsk, 660041, Russian Federation
Krasnoyarsk Scientific Center, Federal Research Center KSC SB RAS, Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Knyazev, Yu. V.; Князев, Юрий Владимирович; Balaev, D. A.; Балаев, Дмитрий Александрович; Stolyar, S. V.; Bayukov, O. A.; Баюков, Олег Артемьевич; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Ladygina, V. P.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович
}
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17.
Влияние реакционных условий
на размер наночастиц серебра в концентрированных золях Carey Lea / С. А. Воробьев, М. Н. Лихацкий, А. С. Романченко [и др.]> // Журн. СФУ. Химия. - 2020. -
Т. 13
,
№ 3
. - С. 372-384 ; J. Sib. Fed. Univ. Chem.,
DOI
10.17516/1998-2836-0190. - Библиогр.: 34. - Работа выполнена при финансовой поддержке Российского научного фонда, грант No 18-73-00142 . - ISSN 1998-2836. - ISSN 2313-6049
Перевод заглавия:
The Influence of the Reaction Conditions on the Size of Silver
Nanoparticles
in Carey Lea's Concentrated Sols
РУБ
Chemistry, Multidisciplinary
Рубрики:
AG
NANOPARTICLES
CITRATE
AGGREGATION
SURFACE
STABILITY
KINETICS
Кл.слова (ненормированные):
наночастицы серебра
--
концентрированные золи
--
влияние реакционных условий
--
цитрат-ион
--
silver
nanoparticles
--
concentrated sols
--
influence of reaction conditions
--
citrate ion
Аннотация:
В данной работе был изучен процесс восстановления растворов Ag (I) цитратными комплексами Fe (II), который позволяет получать наночастицы серебра с высокой стабильностью и концентрацией более 60 г/л. В ходе работы было установлено влияние скорости введения, скорости перемешивания, концентрации реагентов, рН среды и некоторых постсинтетических операций на средний размер наночастиц. Показано, что снижение концентрации Ag (I) и повышение концентрации стабилизатора, доведение рН реакционной среды до 7 позволяют получать наиболее мелкие и однородные частицы. В результате были найдены оптимальные условия, которые дали возможность уменьшить размер частиц и вместе с тем снизить концентрацию реактивов на 33 %. По данным РФЭС, ПЭМ, DLS и ИК были получены наночастицы металлического серебра с размером 6.5±1.8 нм, стабилизированные продуктом частичного распада цитрат-иона.
The reaction of reduction solution of Ag (I) by Fe (II) citrate complex was studied herein. This allows you to receive silver
nanoparticles
with high stability with a concentration above 60 g/l. It was determined that the
nanoparticles
size depends on the injection rate, mixing rate, reagent concentration, pH and some post-synthetic operations on the average size of
nanoparticles
. It was shown that decreasing the concentration of Ag (I) and increasing the concentration of stabilizer also bringing pH to 7 lead to small and uniform particles. Optimal conditions were found that made it possible to reduce particle size and reduce the concentration of reagents by 33 % in the results. According to XPS, TEM, DLS and FTIR datas,
nanoparticles
of metallic silver with a size of 6.5±1.8 nm were obtained, which stabilized by the product of partial decay of the citrate ion.
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Держатели документа:
Институт химии и химической технологии ФИЦ «Красноярский научный центр СО РАН», Российская Федерация, Красноярск
Сибирский федеральный университет, Российская Федерация, Красноярск
Институт физики им. Киренского, КНЦ СО РАН, Российская Федерация, Красноярск
Сибирский государственный университет науки и технологий им. М.Ф. Решетнева, Российская Федерация, Красноярск
Доп.точки доступа:
Воробьев, С. А.; Лихацкий, М. Н.; Романченко, А. С.; Иваненко, Т. Ю.; Машарова, Д. А.; Волочаев, Михаил Николаевич; Volochaev, M. N.; Михлин, Ю. Л.; RUSSIAN SCIENCE FOUNDATIONRussian Science Foundation (RSF) [18-73-00142]
}
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18.
New titania-based photocatalysts
for hydrogen production from aqueous-alcoholic solutions of methylene blue / D. V. Markovskaya, A. V. Zhurenok, A. Y. Kurenkova [et al.]> // RSC Adv. - 2020. -
Vol. 10
,
Is. 56
. - P. 34137-34148,
DOI
10.1039/d0ra07630a. - Cited References: 57. - The XPS and XRD experiments were performed using facilities of the shared research center "National center for investigation of catalysts" at Boreskov Institute of Catalysis. The authors are grateful to Dr S. Cherepanova for the XRD study and Dr T. Larina and Dr D. Selishchev for the UV-vis measurements. The TEM investigations were conducted in the SFU Joint Scientific Center supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation . - ISSN 2046-2069
Перевод заглавия:
Новые катализаторы, основанные на диоксиде титана, для производства водорода из водно-спиртовых растворов метиленовой сини
РУБ
Chemistry, Multidisciplinary
Рубрики:
Ray absorption-edge
In-situ
Ag
nanoparticles
Chemical-states
XPS analysis
Аннотация:
A series of CuOx–TiO2 photocatalysts were prepared using fresh and thermally activated Evonik Aeroxide P25 titanium dioxide. The photocatalysts were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, XANES, diffuse reflectance spectroscopy, and N2 adsorption technique. Photocatalytic activity of the samples was tested in hydrogen production from aqueous-alcoholic solutions of methylene blue under UV radiation (λ = 386 nm). It was found for the first time the synergistic effect of hydrogen production from two substrates—dye and ethanol. The maximum hydrogen production rate in the system water–ethanol–methylene blue was 1 μmol min−1, which is 25 times higher than a value measured in a 10% solution of ethanol in water. The thermal activation of titania also leads to a change in the rate of hydrogen production. The highest catalytic activity was observed for a CuOx–TiO2 photocatalyst based on titania thermally-activated at 600 °C in air. A mechanism of the photocatalytic reaction is discussed.
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Держатели документа:
Boreskov Inst Catalysis, Fed Res Ctr, Lavrentiev Ave 5, Novosibirsk 630090, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Доп.точки доступа:
Markovskaya, Dina, V; Zhurenok, Angelina, V; Kurenkova, Anna Yu; Kremneva, Anna M.; Saraev, Andrey A.; Zharkov, S. M.; Жарков, Сергей Михайлович; Kozlova, Ekaterina A.; Kaichev, Vasily V.
}
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19.
Features of the
quasi-static and dynamic magnetization switching in NiO
nanoparticles
: Manifestation of the interaction between magnetic subsystems in antiferromagnetic
nanoparticles
/ D. A. Balaev, A. A. Krasikov, S. I. Popkov [et al.]> // J. Magn. Magn. Mater. - 2020. -
Vol. 515
. - Ст. 167307,
DOI
10.1016/j.jmmm.2020.167307. - Cited References: 89. - We are grateful to A.D. Balaev for fruitful discussions. The TEM study and magnetic measurements using a PPMS-6000 facility were carried out on the equipment of the Krasnoyarsk Territorial Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences . - ISSN 0304-8853
Кл.слова (ненормированные):
Antiferromagnetic nanoparticle
--
Dynamic magnetization
--
Irreversible magnetization
--
Magnetic subsystems
--
Magnetization switching
--
Quasi-static conditions
--
Sub-micron particles
--
Universal parameters
Аннотация:
We report on the investigations of a system of 8-nm NiO particles representing antiferromagnetic (AFM) materials, which are weak magnetic in the form of submicron particles, but can be considered to be magnetoactive in the form of
nanoparticles
due to the formation of the uncompensated magnetic moment in them. The regularities of the behavior of magnetization switching in AFM
nanoparticles
are established by studying the magnetic hysteresis loops under standard quasi-static conditions and in a quasi-sinusoidal pulsed field of up to 130 kOe with pulse lengths of 4–16 ms. The magnetic hysteresis loops are characterized by the strong fields of the irreversible magnetization behavior, which is especially pronounced upon pulsed field-induced magnetization switching. Under the pulsed field-induced magnetization switching conditions, which are analogous to the dynamic magnetic hysteresis, the coercivity increases with an increase in the maximum applied field H0 and a decrease in the pulse length. This behavior is explained by considering the flipping of magnetic moments of particles in an external ac magnetic field; however, in contrast to the case of single-domain ferro- and ferrimagnetic particles, the external field variation rate dH/dt is not a universal parameter uniquely determining the coercivity. At the dynamic magnetization switching in AFM
nanoparticles
, the H0 value plays a much more important role. The results obtained are indicative of the complex dynamics of the interaction between magnetic subsystems formed in AFM
nanoparticles
.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences”, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation
Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Krasikov, A. A.; Красиков, Александр Александрович; Popkov, S. I.; Попков, Сергей Иванович; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Semenov, S. V.; Семёнов, Сергей Васильевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Kirillov, V. L.; Martyanov, O. N.
}
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20.
General regularities and
differences in the behavior of the dynamic magnetization switching of ferrimagnetic (CoFe2O4) and antiferromagnetic (NiO)
nanoparticles
/ S. I. Popkov, A. A. Krasikov, S. V. Semenov [et al.]> // Phys. Solid State. - 2020. -
Vol. 62
,
Is. 9
. - P. 1518-1524,
DOI
10.1134/S1063783420090255. - Cited References: 46. - This work was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk region, and the Krasnoyarsk Regional Foundation for Science, project no. 18-42-240012: "Magnetization switching of magnetic
nanoparticles
in strong pulsed magnetic fields is a new approach to studying the dynamic effects related to the processes of magnetization of magnetic
nanoparticles
" . - ISSN 1063-7834. - ISSN 1090-6460
РУБ
Physics, Condensed Matter
Рубрики:
PARTICLE-SIZE
EXCHANGE-BIAS
TEMPERATURE
STATE
COERCIVITY
Кл.слова (ненормированные):
CoFe2O4nanoparticles
--
antiferromagnetic NiO
nanoparticles
--
dynamic magnetization switching
--
coercive force
Аннотация:
In antiferromagnetic (AFM)
nanoparticles
, an additional ferromagnetic phase forms and leads to the appearance in AFM
nanoparticles
of a noncompensated magnetic moment and the magnetic properties typical of common FM
nanoparticles
. In this work, to reveal the regularities and differences of the dynamic magnetization switching in FM and AFM
nanoparticles
, the typical representatives of such materials are studied: CoFe2O4 and NiO
nanoparticles
with average sizes 6 and 8 nm, respectively. The high fields of the irreversible behavior of the magnetizations of these samples determine the necessity of using strong pulsed fields (amplitude to 130 kOe) to eliminate the effect of the partial hysteresis loop when studying the dynamic magnetic hysteresis. For both types of the samples, coercive force HC at the dynamic magnetization switching is markedly higher than HC at quasi-static conditions. HC increases as the pulse duration τP decreases and the maximum applied field H0 increases. The dependence of HC on field variation rate dH/dt = H0/2τP is a unambiguous function for CoFe2O4
nanoparticles
, and it is precisely such a behavior is expected from a system of single-domain FM
nanoparticles
. At the same time, for AFM NiO
nanoparticles
, the coercive force is no longer an unambiguous function of dH/dt, and the value of applied field H0 influences more substantially. Such a difference in the behaviors of FM and AFM
nanoparticles
is caused by the interaction of the FM subsystem and the AFM “core” inside AFM
nanoparticles
. This circumstance should be taken into account when developing the theory of dynamic hysteresis of the AFM
nanoparticles
and also to take into account their practical application.
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Публикация на русском языке
Общие закономерности и различия в поведении динамического перемагничивания ферримагнитных (CoFe2O4) и антиферромагнитных (NiO) наночастиц [Текст] / С. И. Попков, А. А. Красиков, С. В. Семенов [и др.] // Физ. тверд. тела. - 2020. - Т. 62 Вып. 9. - С. 1354-1360
Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Boreskov Inst Catalisis, Siberian Branch, Novosibirsk 630090, Russia.
Доп.точки доступа:
Popkov, S. I.; Попков, Сергей Иванович; Krasikov, A. A.; Красиков, Александр Александрович; Semenov, S. V.; Семёнов, Сергей Васильевич; Dubrovskii, A. A.; Дубровский, Андрей Александрович; Yakushkin, S. S.; Kirillov, V. L.; Mart'yanov, O. N.; Balaev, D. A.; Балаев, Дмитрий Александрович; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of the Krasnoyarsk region; Krasnoyarsk Regional Foundation for Science [18-42-240012]
}
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