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Вид документа : Однотомное издание
Шифр издания :
Заглавие : International workshop on actual problems of condensed matter physics : Program. Book of abstracts
Выходные данные : Krasnoyarsk, 2017
Колич.характеристики :30 с
Коллективы : Federal Research Center KSC SB RAS, Kirensky Institute of Physics, Siberian Federal Univercity, International Workshop on Actual Problems of Condensed Matter Physics (27 Mar. - 1 Apr. 2017; Krasnoyarsk/ Cheremushki) :
Содержание : Magnetic and transport properties of the epitaxial Fe3Si film on a Si substrate/ I. A. Bondarev. The magnetic anisotropy of the Fe and Fe(1-x)Si(x) thin films depend on/ I. A. Yakovlev [и др.]. Inverted opals as the Josephson networks of weak links/ S. I. Popkov [и др.]. Electronic structure and Fermi surface within the cluster perturbation theory in X-operators representation/ S. Nikolaev, V. I. Kuz'min, S. G. Ovchinnikov. DFT investigation of electronic and optical magnetic properties of one dimensional transition metal halide structuresTmHaI3/ A. S. Fedorov [и др.]. Effect of interatomic exchange interaction on spin crossover and Mott-Hubbard transition under high pressure and the physical properties of the low Earth’s mantle/ S. G. Ovchinnikov [и др.]. Extremely high magnetic-field sensitivity of charge transport in the Mn/SiO2/p-Si hybrid structure/ I. A. Tarasov [и др.]. Marnetic-field sensitivity of charge transport in silicon-based hybrid structures/ N. V. Volkov [et al.]. Fabrication of multi-terminal planar devices based on epitaxial Fe1-xSix films grown on Si(111)/ A. V. Lukyanenko, A. S. Tarasov, I. A. Tarasov [et al.] ; A. V. Luyanenko [и др.]. Magnetic field-driven lateral photovoltaic effect in the Fe/SiO2/p-Si hibrid structure with the Scottky barrier/ M. V. Rautskii [и др.]. Small angle X-ray scattering and atomic structure of aptamer biomolecules/ R. Moryachkov [и др.]. Iron silicides and pure iron epitaxial and highly-textured nanostructures on silicon: growth and their physical properties/ I. A. Tarasov [и др.]. Magnetic nanoparticles and DNA-aptamers conjugates for diagnostics and therapy of cancer/ A. E. Sokolov [и др.]. The microscopic origin of ferromagnetism in Fe silicides/ I. S. Sandalov [и др.].
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Komina A. V., Yaroslavtsev R. N., Gerasimova Yu. V., Stolyar S. V., Olkhovsky I. A., Bairmani M. S.
Заглавие : Magnetic Nanoparticles for Extracting DNA from Blood Cells
Место публикации : Bull. Russ. Acad. Sci. Phys. - 2020. - Vol. 84, Is. 11. - P.1362-1365. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873820110155
Примечания : Cited References: 15
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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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Ladygina V. P., Boldyreva A. V., Kolenchukova O. A., Vorotynov A. M., Bairmani M. S., Yaroslavtsev R. N., Iskhakov R. S.
Заглавие : Synthesis, Properties, and in vivo Testing of Biogenic Ferrihydrite Nanoparticles
Место публикации : Bull. Russ. Acad. Sci. Phys. - 2020. - Vol. 84, Is. 11. - P.1366-1369. - ISSN 10628738 (ISSN), DOI 10.3103/S106287382011026X
Примечания : 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
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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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Yaroslavtsev R. N., Ladygina V. P., Balaev D. A., Pankrats A. I., Iskhakov R. S.
Заглавие : Collective Spin Glass State in Nanoscale Particles of Ferrihydrite
Коллективы : International Symposium “Nanostructures: Physics and Technology”
Место публикации : Semiconductors. - 2020. - Vol. 54, Is. 12. - P.1710-1712. - DOI 10.1134/S1063782620120362
Примечания : 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
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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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Fedorov A. S., Krasnov P.O., Visotin M. A., Ågren H.
Заглавие : Study of plasmons and thermoelectric properties of nanoparticles connected by thin conductive bridges
Коллективы : Asian School-Conference on Physics and Technology of Nanostructured Materials, Азиатская школа-конференция по физике и технологии наноструктурированных материалов
Место публикации : The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials: Proceedings. - VLadivostok: Dalnauka Publishing, 2020. - Ст.VI.30.03o. - P.168. - ISBN 978-5-8044-1698-1
Примечания : This study was supported by the Russian Science Foundation, project no. 16-13-00060.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Stolyar S. V., Kryukova O. V., Yaroslavtsev R. N., Latyshev N. V.
Заглавие : Influence of Magnetic Nanoparticles on Cells of Ehrlich Ascites Carcinoma
Коллективы : Annual conference on мagnetism and мagnetic мaterials
Место публикации : 65th Annual conference on мagnetism and мagnetic мaterials (MMM-2020): abstract book. - 2020. - Ст.Q5-07. - P.530
Примечания : Cited References: 1
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Komogortsev S. V., Balaev D. A., Krasikov A. A., Stolyar S. V., Yaroslavtsev R. N., Iskhakov R. S.
Заглавие : Magnetic Hysteresis of Blocked Ferrihydrite Nanoparticles
Коллективы : Annual conference on мagnetism and мagnetic мaterials
Место публикации : 65th Annual conference on мagnetism and мagnetic мaterials (MMM-2020): abstract book. - 2020. - Ст.C4-02. - P.74
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Kryukova O. V., Yaroslavtsev R. N., Bayukov O. A., Knyazev Yu. V., Gerasimova Yu. V., Pyankov V. F., Latyshev N. V., Shestakov N. P.
Заглавие : Influence of magnetic nanoparticles on cells of Ehrlich ascites carcinoma
Место публикации : AIP Adv. - 2021. - Vol. 11, Is. 1. - Ст.015019. - ISSN 21583226 (ISSN), DOI 10.1063/9.0000165
Примечания : 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
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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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Komogortsev S. V., Balaev D. A., Krasikov A. A., Stolyar S. V., Yaroslavtsev R. N., Ladygina V. P., Iskhakov R. S.
Заглавие : Magnetic hysteresis of blocked ferrihydrite nanoparticles
Место публикации : AIP Adv. - 2021. - Vol. 11, Is. 1. - Ст.015329. - ISSN 21583226 (ISSN), DOI 10.1063/9.0000111
Примечания : 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)
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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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Komogortsev S. V., Stolyar S. V., Chekanova L. A., Yaroslavtsev R. N., Bayukov O. A., Velikanov D. A., Volochaev M. N., Eroshenko P. E., Iskhakov R. S.
Заглавие : Square plate shaped magnetite nanocrystals
Место публикации : J. Magn. Magn. Mater. - 2021. - Vol. 527. - Ст.167730. - ISSN 03048853 (ISSN), DOI 10.1016/j.jmmm.2021.167730
Примечания : 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
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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11.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sokolov A. Е., Kurilova A. V., Sherepa A. V., Volochaev M. N., Velikanov D. A., Goncharova D. A., Shabalina A. V., Svetlichnyi V.
Заглавие : Magneto-optical properties of the iron oxide nanoparticles obtained by laser ablation
Коллективы : Pulsed Lasers and Laser Applications, International Conference
Место публикации : 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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12.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sokolov A. Е., Zabluda V. N., Sherepa A. V., Knyazev Yu. V., Volochaev M. N., Kurilina A., Velikanov D. A., Goncharova D. A., Shabalina A., Svetlichnyi V.
Заглавие : Magnetic properties of iron oxide nanoparticles to create aptamer bionanoconjugates
Коллективы : Aptamers in Russia, international conference
Место публикации : Aptamers in Russia, international conference (1 ; 2019 ; Aug. 27-30 ; Krasnoyarsk). 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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13.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Denissenko P., Denisenko V. V., Denisov I., Kantsler V., Kolovskaya O. S., Lapin I. N., Sokolov A. Е., Svetlichnyi V., Zabluda V. N., Zamay S. S., Kichkailo A.S.
Заглавие : Magnetic sorting of tumor cells with attached magnetic nanoparticles in a microchannel
Коллективы : Aptamers in Russia, international conference
Место публикации : Aptamers in Russia, international conference (1 ; 2019 ; Aug. 27-30 ; Krasnoyarsk). 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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14.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Kurilova A. V., Sokolov A. Е., Sherepa A. V., Volochaev M. N., Velikanov D. A., Goncharova D. A., Shabalina A. V., Svetlichnyi V.
Заглавие : Magnetic and optical properties of nanoparticles of iron and nickel decorated with gold and the possibility of their medical use
Коллективы : Pulsed Lasers and Laser Applications, International Conference
Место публикации : Pulsed Lasers and Laser Applications, International Conference (14 ; 2019 ; 15-20 Sept. ; Tomsk). 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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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Fedorov A. S., Krasnov, Pavel O., Visotin M. A., Tomilin F. N., Polyutov, Sergey P.
Заглавие : Thermoelectric and Plasmonic Properties of Metal Nanoparticles Linked by Conductive Molecular Bridges
Коллективы : Russian Science FoundationRussian Science Foundation (RSF) [16-13-00060]; Ministry of Science and High Education of the Russian Federation; FSRZ-2020-0008 (plasmonic properties)
Место публикации : Phys. Status Solidi B. - 2020. - Vol. 257, Is. 12. - Ст.2000249. - ISSN 0370-1972, DOI 10.1002/pssb.202000249. - ISSN 1521-3951(eISSN)
Примечания : 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)
Предметные рубрики: POLYMERS
ARRAYS
RANGE
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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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Krasitskaya V. V., Frank L. A., Yaroslavtsev R. N., Chekanova L. A., Gerasimova Yu. V., Volochaev M. N., Bairmani M. S., Velikanov D. A.
Заглавие : Polysaccharide-coated iron oxide nanoparticles: Synthesis, properties, surface modification
Место публикации : Mater. Lett. - 2021. - Vol. 284. - Ст.128920. - ISSN 0167577X (ISSN), DOI 10.1016/j.matlet.2020.128920
Примечания : 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)
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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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivantsov R. D., Petrov D. A., Ivanova O. S., Edelman I. S., Zharkov S. M., Velikanov D. A., Lin, Chun-Rong
Заглавие : Magnetooptics of nanocomposites based on iron chalcogenide nanoparticles
Коллективы : Asian School-Conference on Physics and Technology of Nanostructured Materials, Азиатская школа-конференция по физике и технологии наноструктурированных материалов
Место публикации : Solid State Phenom. - 2020. - Vol. 312. - P.160-165. - ISSN 1012-0394, DOI 10.4028/www.scientific.net/SSP.312.160. - ISSN 1662-9779
Примечания : Cited References: 13. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science, to the research project: № 19-42-240005 «Features of the electronic structure, magnetic properties and optical excitations in nanocrystals of the multifunctional magnetic chalcogenides Fe3S4 and FeSe», by Joint Research Project of Russian Foundation for Basic Research № 19-52-52002 and Ministry of Science and Technology, Taiwan MOST № 108-2923-M-153-001-MY3 and № 106-2112-M-153-001-MY3.
Аннотация: Morphology, structure, magnetic properties and magnetic circular dichroism (MCD) were studied for the FexSy and FexSey nanoparticles (NPs) synthesized with the polyol mediated and the thermal decomposition processes, correspondingly, at different regimes. For all NPs samples, but Fe3S4, MCD was measured for the first time. It has been shown that in the case of sulfides, the character of the MCD spectrum changes as the NPs phase composition transforms from Fe3S4 to FeS with the synthesis temperature increase. At the same time, the shape of the MCD spectrum is almost independent of the NPs phase in the case of iron selenides.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Воробьев С. А., Лихацкий М. Н., Романченко А. С., Иваненко Т. Ю., Машарова Д. А., Волочаев, Михаил Николаевич, Михлин Ю. Л.
Заглавие : Влияние реакционных условий на размер наночастиц серебра в концентрированных золях Carey Lea
Коллективы : RUSSIAN SCIENCE FOUNDATIONRussian Science Foundation (RSF) [18-73-00142]
Место публикации : Журн. СФУ. Химия. - 2020. - Т. 13, № 3. - С. 372-384. - ISSN 1998-2836, DOI 10.17516/1998-2836-0190; J. Sib. Fed. Univ. Chem. - ISSN 2313-6049(eISSN)
Примечания : Библиогр.: 34. - Работа выполнена при финансовой поддержке Российского научного фонда, грант No 18-73-00142
Предметные рубрики: AG NANOPARTICLES
CITRATE
AGGREGATION
SURFACE
STABILITY
KINETICS
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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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Markovskaya, Dina, V, Zhurenok, Angelina, V, Kurenkova, Anna Yu, Kremneva, Anna M., Saraev, Andrey A., Zharkov S. M., Kozlova, Ekaterina A., Kaichev, Vasily V.
Заглавие : New titania-based photocatalysts for hydrogen production from aqueous-alcoholic solutions of methylene blue
Место публикации : RSC Adv. - 2020. - Vol. 10, Is. 56. - P.34137-34148. - ISSN 2046-2069(eISSN), DOI 10.1039/d0ra07630a
Примечания : 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
Предметные 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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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chilom C. G., Sandu N., Balasoiu M., Yaroslavtsev R. N., Stolyar S. V., Rogachev A. V.
Заглавие : Ferrihydrite nanoparticles insights: Structural characterization, lactate dehydrogenase binding and virtual screening assay
Место публикации : Int. J. Biol. Macromol. - 2020. - Vol. 164. - P.3559-3567. - ISSN 01418130 (ISSN), DOI 10.1016/j.ijbiomac.2020.08.242
Примечания : 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
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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