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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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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. 1710-1712DOI 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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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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    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

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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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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

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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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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

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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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    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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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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Magnetic hysteresis of blocked ferrihydrite nanoparticles / S. V. Komogortsev, D. A. Balaev, A. A. Krasikov [et al.] // AIP Adv. - 2021. - Vol. 11, Is. 1. - Ст. 015329, DOI 10.1063/9.0000111. - Cited References: 23. - The magnetic measurements were partially carried out on the equipment of the Krasnoyarsk Regional Center for Collective Use, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences. This study 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) . - ISSN 2158-3226
Кл.слова (ненормированные):
Hysteresis -- Hysteresis loops -- Magnetic anisotropy -- Magnetic materials -- Nanoparticles -- Anisotropy field -- Ferrihydrites -- Field amplitudes -- Magnetic anisotropy field -- Minor hysteresis loop -- Stoner-Wohlfarth model -- Uniaxial anisotropy -- Nanomagnetics
Аннотация: Using minor hysteresis loops in the Stoner-Wohlfarth model allows describing the experimental behavior of the coercive force of minor hysteresis loops in ferrihydrite nanoparticles with a change in the field amplitude. The description allows estimating the parameters of the distribution of the magnetic anisotropy field in nanoparticles. The best agreement of the anisotropy fields estimated by different approaches is achieved for the assumption of uniaxial anisotropy in ferrihydrite nanoparticles.

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Держатели документа:
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk Science Center, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Komogortsev, S. V.; Комогорцев, Сергей Викторович; Balaev, D. A.; Балаев, Дмитрий Александрович; Krasikov, A. A.; Красиков, Александр Александрович; Stolyar, S. V.; Yaroslavtsev, R. N.; Ladygina, V. P.; Iskhakov, R. S.; Исхаков, Рауф Садыкович
}
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10.

Square plate shaped magnetite nanocrystals / S. V. Komogortsev, S. V. Stolyar, L. A. Chekanova [et al.] // J. Magn. Magn. Mater. - 2021. - Vol. 527. - Ст. 167730, DOI 10.1016/j.jmmm.2021.167730. - Cited References: 42. - This work was supported by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research projects No. 20-42-240001 and 20-42-242902 and 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). We are grateful to the Center of collective use of FRC KSC SB RAS for the provided equipment . - ISSN 0304-8853
Кл.слова (ненормированные):
Magnetite -- Nanoparticles -- Magnetic anisotropy
Аннотация: Square plate shaped magnetite nanocrystals have been synthesized by chemical precipitation from solution using arabinogalactan. A high crystal quality was observed in the plate plane while, across the plate, there is some stratification. The magnetic hysteresis in such particles is determined by the bulk magnetocrystalline anisotropy, plate shape anisotropy, and surface magnetic anisotropy. It is shown using the micromagnetic simulation that the ferromagnetic square nanoplates exhibit the extraordinary magnetization switching anisotropy, which should be taken into account for understanding the hysteretic properties of the particles.

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Держатели документа:
Krasnoyarsk Scientific Center, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Komogortsev, S. V.; Комогорцев, Сергей Викторович; Stolyar, S. V.; Столяр, Сергей Викторович; Chekanova, L. A.; Чеканова, Лидия Александровна; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Eroshenko, P. E.; Ерошенко, П. Е.; Iskhakov, R. S.; Исхаков, Рауф Садыкович
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11.

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

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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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12.

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

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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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13.

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

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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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14.

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

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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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15.

    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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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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16.

Thermoelectric and Plasmonic Properties of Metal Nanoparticles Linked by Conductive Molecular Bridges / A. S. Fedorov, P. O. Krasnov, M. A. Visotin [et al.] // Phys. Status Solidi B. - 2020. - Vol. 257, Is. 12. - Ст. 2000249, DOI 10.1002/pssb.202000249. - Cited References: 53. - This study was supported by the Russian Science Foundation, project no. 16-13-00060 (thermoelectric properties), and by the Ministry of Science and High Education of the Russian Federation, project no. FSRZ-2020-0008 (plasmonic properties) . - ISSN 0370-1972. - ISSN 1521-3951

РУБ Physics, Condensed Matter
Рубрики:
POLYMERS
ARRAYS
RANGE
Кл.слова (ненормированные):
charge transfer plasmons -- density functional theory -- nanoparticles -- thermoelectric properties
Аннотация: Thermoelectric and plasmonic properties of systems comprising small golden nanoparticles (NPs) linked by narrow conductive polymer bridges are studied using the original hybrid quantum-classical model. The bridges are considered here to be either conjugated polyacetylene, polypyrrole, or polythiophene chain molecules terminated by thiol groups. The parameters required for the model are obtained using density functional theory and density functional tight-binding simulations. Charge-transfer plasmons in the considered dumbbell structures are found to possess frequency in the infrared region for all considered molecular linkers. The appearance of plasmon vibrations and the existence of charge flow through the conductive molecule, with manifestation of quantum properties, are confirmed using frequency-dependent polarizability calculations implemented in the coupled perturbed Kohn-Sham method. To study the thermoelectric properties of the 1D periodical systems, a universal equation for the Seebeck coefficient is derived. The phonon part of the thermal conductivity for the periodical -NP-S-C8H8- system is calculated by the classical molecular dynamics. The thermoelectric figure of meritZTis calculated by considering the electrical quantum conductivity of the systems in the ballistic regime. It is shown that forAu309nanoparticles connected by polyacetylene, polypyrrole, or polythiophene chains atT = 300 K, the ZTvalue is {0.08;0.45;0.40}, respectively.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
RAS, Kirensky Inst Phys, KSC, SB, Krasnoyarsk 660036, Russia.
Tomsk State Univ, Tomsk 634050, Russia.

Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Krasnov, Pavel O.; Visotin, M. A.; Высотин, Максим Александрович; Tomilin, F. N.; Томилин, Феликс Николаевич; Polyutov, Sergey P.; Russian Science FoundationRussian Science Foundation (RSF) [16-13-00060]; Ministry of Science and High Education of the Russian Federation; FSRZ-2020-0008 (plasmonic properties)
}
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17.

Polysaccharide-coated iron oxide nanoparticles: Synthesis, properties, surface modification / S. V. Stolyar, V. V. Krasitskaya, L. A. Frank [et al.] // Mater. Lett. - 2021. - Vol. 284. - Ст. 128920, DOI 10.1016/j.matlet.2020.128920. - Cited References: 12. - The reported study was carried out with the financial support of the Russian Foundation for Fundamental Research , the Government of the Krasnoyarsk Territory , the Krasnoyarsk Territory Fund for Support of Scientific and Technical Activity in the framework of scientific Project No. 18-43-243003. 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) . - ISSN 0167-577X
Кл.слова (ненормированные):
Magnetic materials -- Nanoparticles -- Biomaterials -- Magnetic materials -- Polysaccharide
Аннотация: In this work, magnetite nanoparticles coated with polysaccharides were synthesized. Arabinogalactan and chitosan were used as polysaccharides. The possibilities of immobilization of biospecific molecules on the surface of the obtained composites were studied. Experiments on covalent immobilization of biospecific molecules on magnetic nanoparticles coated with a polysaccharide showed a high density of immobilized molecules. This suggests the use of such materials in bioanalytical systems or as affinity sorbents.

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Держатели документа:
Krasnoyarsk Scientific Center, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Biophysics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Astrakhan State University, Astrakhan, Russian Federation
University of Al-qasim Green, College of Biotechnology, Iraq

Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Krasitskaya, V. V.; Frank, L. A.; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Chekanova, L. A.; Чеканова, Лидия Александровна; Gerasimova, Yu. V.; Герасимова, Юлия Валентиновна; Volochaev, M. N.; Волочаев, Михаил Николаевич; Bairmani, M. S.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич
}
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18.

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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19.

    Synthesis and characterization of core-shell magnetic nanoparticles NiFe2O4@Au / D. Saykova, S. Saikova, Y. Mikhlin [et al.] // Metals. - 2020. - Vol. 10, Is. 8. - Ст. 1075, DOI 10.3390/met10081075. - Cited References: 45 . - ISSN 2075-4701
   Перевод заглавия: Синтез и характеристика магнитных наночастиц ядро-оболочка NiFe2O4@Au

РУБ Materials Science, Multidisciplinary + Metallurgy & Metallurgical
Рубрики:
NICKEL FERRITE NANOPARTICLES
   GOLD NANOPARTICLES
   OXIDATION
   REDUCTION
Кл.слова (ненормированные):
nickel ferrite nanoparticles -- NiFe2O4@Au core-shell nanoparticles -- synthesis -- X-ray photoelectron spectroscopy -- magnetic circular dichroism
Аннотация: In this study, NiFe2O4@Au core–shell nanoparticles were prepared by the direct reduction of gold on the magnetic surface using amino acid methionine as a reducer and a stabilizing agent simultaneously. The obtained nanoparticles after three steps of gold deposition had an average size of about 120 nm. The analysis of particles was performed by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and UV-Vis spectroscopy techniques. The results indicate successful synthesis of core–shell particles with the magnetic core, which consists of a few agglomerated nickel ferrite crystals with an average size 25.2 ± 2.0 nm, and the thick gold shell consists of fused Au0 nanoparticles (NPs). Magnetic properties of the obtained nanoparticles were examined with magnetic circular dichroism. It was shown that the magnetic behavior of NiFe2O4@Au NPs is typical for superparamagnetic NPs and corresponds to that for NiFe2O4 NPs without a gold shell. The results indicate the successful synthesis of core–shell particles with the magnetic nickel ferrite core and thick gold shell, and open the potential for the application of the investigated hybrid nanoparticles in hyperthermia, targeted drug delivery, magnetic resonance imaging, or cell separation. The developed synthesis strategy can be extended to other metal ferrites and iron oxides.

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Держатели документа:
Siberian Fed Univ, Sch Nonferrous Met & Mat Sci, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Saykova, Diana; Saikova, Svetlana; Mikhlin, Yuri; Panteleeva, Marina; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Belova, E.
}
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20.

    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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