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Транспортные свойства композитов Bi-ВТСП+Ag в окрестности порога перколяции [Text] / Белозерова И.Л.Балаев Д.А. [и др.] // Третья международная конференция "Фундаментальные проблемы высокотемпературной сверхпроводимости" ФПС'08 = The 3rd International Conference "Fundamental Problems of High Temperature Superconductivity" FPS'08 : 13-17 окт., Звенигород, 2008 : сборник трудов. - С. 106-107

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Белозерова, И. Л.; Балаев, Дмитрий Александрович; Balaev, D. A.; Васильев, Александр Дмитриевич; Vasiliev, A. D.; Шайхутдинов, Кирилл Александрович; Shaikhutdinov, K. A.; Попков, Сергей Иванович; Popkov, S. I.; Петров, Михаил Иванович; Petrov, M. I.; "Фундаментальные проблемы высокотемпературной сверхпроводимости", международная конференция(3 ; 2008 ; окт. ; Звенигород); Физический институт им. П.Н. Лебедева РАН
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Дальнодействие химического взаимодействия Ni с Fe в эпитаксиальных Ni(001)/Ag(001)/Fe(001) нанопленках / В. Г. Мягков, В. С. Жигалов [и др.] // Третья Всероссийская конференция по наноматериалам. НАНО 2009 : 20-24 апреля 2009 г. : тезисы докладов. - С. 582-585 . - ISBN 978-5-93667-123-5

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Мягков, Виктор Григорьевич; Myagkov, V. G.; Жигалов, Виктор Степанович; Zhigalov, V. S.; Быкова, Людмила Евгеньевна; Bykova, L. E.; Бондаренко, Галина Николаевна; Bondarenko, G. N.; Всероссийская конференция по наноматериалам(2009 ; Mar. ; Екатеринбург)
}
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Adsorption and Catalytic Properties of Nanoparticles Fe3O4-Ag in Relation to Various Types of Organic Dyes / O. S. Ivanova, I. S. Edel'man, E. S. Sventitsky [et al.] // XII lnternational conference "Mechanisms of catalvtic reactions" : abstracts. - Novosibirsk, 2024. - Ст. PP-09. - P. 174-175. - Библиогр.: 2. - РНФ и Красноярский краевой фонд науки, проект 23-22-10025 . - ISBN 978-5-906376-56-5

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

Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Edel'man, I. S.; Эдельман, Ирина Самсоновна; Sventitsky, E. S.; Serdyuk, A. A.; Toropova, E. S.; "Mechanisms of catalytic reactions", International conference(12 ; 2024 ; June 17-21 ; Vladimir); "Механизмы каталитических реакций", международная конференция(12 ; 2024 ; 17-21 июня ; Владимир); Институт катализа им. Г.К. Борескова Сибирского отделения РАН; Институт органической химии им. Н.Д. Зелинского РАН; Московский государственный университет им. М.В. Ломоносова; Сибирское отделение РАН; Центр компетенций НТИ "Водород как основа низкоуглеродной экономики"
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Adsorption properties and catalytic activity of Fe3O4-Ag nanostructures / O. S. Ivanova, Ch.-R. Lin, I. S. Edelman [et al.] // Appl. Surf. Sci. - 2024. - Vol. 665. - Ст. 160236, DOI 10.1016/j.apsusc.2024.160236. - Cited References: 48. - The work is supported by the Russian Science Foundation (project no. 23-22-10025, https://rscf.ru/project/ 23-22-10025/) and by the Krasnoyarsk Regional Fund of Science and Technology Support. The electron microscopy and EDS investigations were conducted in the SFU Joint Scientific Center. Magnetic investigations were carried out in the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS" . - ISSN 0169-4332. - ISSN 1873-5584
Кл.слова (ненормированные):
FeO-Ag nanostructures -- Nano-adsorbents -- Water purification methods -- Catalytic activity of nanoparticles
Аннотация: The morphology and magnetic properties as well as adsorption capacity and catalytic activity of Fe3O4-Ag nanoparticles synthesized by the solvothermal method were studied in dependence on the duration of the thermolysis process (3, 6, and 8 h). X-ray diffraction, transmission electron microscopy, and energy-dispersive spectroscopy measurements showed that the morphology of nanoparticles changed strongly as the duration of thermolysis increased. At 6 and 8 h duration, Fe3O4 nanocrystals grow and assemble into porous spherical globules with an Ag core (samples 2 and 3). These samples demonstrate high magnetization value and very low coercivity. The adsorption capacity of nanoparticles was studied with respect to two organic dyes: cationic methylene blue (MB) and anionic Congo red (CR). The particles showed preferential adsorption of the cationic dye. High catalytic activity towards four dyes: MB, methyl orange (MO), CR, and Rhodamine C (RhC) at the presence of NaBH4 is the remarkable property of these samples. The rate constant of the catalytic reaction was 1.4 min−1. Simultaneous exposure of CR and MO dyes to nanoparticles and NaBH4 caused their irreversible 100 % degradation while in the case of MB and RhC, a transition to their leuco form occurred.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia
Department of Applied Physics, National Pingtung University, Pingtung City 90003, Taiwan
Institute of Chemistry and Chemical Technology, Federal Research Center KSC Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Lin, Chun-Rong; Edelman, I. S.; Эдельман, Ирина Самсоновна; Svetlitsky, E. S.; Светлицкий, Евгений Сергеевич; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Zharkov, S. M.; Жарков, Сергей Михайлович; Sukhachev, A. L.; Сухачев, Александр Леонидович; Vorobyev, S. A.; Petrov, D. A.; Петров, Дмитрий Анатольевич; Lin, En-Szu
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    Synthesis, crystal structures, and properties of new acentric glaserite-related compounds Rb7Ag5–3xSc2+x(XO4)9 (X = Mo, W) / T. S. Spiridonova, S. F. Solodovnikov, M. S. Molokeev [et al.] // J. Solid State Chem. - 2022. - Vol. 305. - Ст. 122638, DOI 10.1016/j.jssc.2021.122638. - Cited References: 71. - This research was supported by the Ministry of Science and Higher Education of the Russian Federation , projects No. 0273-2021-0008 (Baikal Institute of Nature Management, SB RAS), and No. 121031700313-8 (Nikolaev Institute of Inorganic Chemistry, SB RAS), as well as partial financial support from the Russian Foundation for Basic Research (project No. № 20-03-00533) . - ISSN 0022-4596
   Перевод заглавия: Синтез, кристаллическая структура и свойства новых ацентрических соединений Rb7Ag5–3xSc2+x(XO4)9 (X = Mo, W), родственных глазериту
Кл.слова (ненормированные):
Rubidium -- Silver -- Scandium -- Triple molybdate -- Triple tungstate -- Phase equilibria -- Synthesis -- Crystal structure -- Ionic conductivity
Аннотация: The subsolidus phase equilibria in the system Ag2MoO4–Rb2MoO4–Sc2(MoO4)3 were studied and two new triple molybdates, Rb9Ag3Sc2(MoO4)9 and Rb7Ag5Sc2(MoO4)9, were found. The structures of Rb7Ag5Sc2(MoO4)9 and isostructural Rb7Ag5Sc2(WO4)9 of the Cs7Na5Yb2(MoO4)9 type (the space group R32) were determined. The found composition of the triple tungstate crystal, Rb7Ag4.61Sc2.13(WO4)9, indicates a non-stoichiometric compound formula, Rb7Ag5–3xSc2+x(WO4)9. Both structures have one incompletely occupied Ag site, and structure Rb7Ag4.61Sc2.13(WO4)9 also contains two positions with mixed Ag and Sc. Both compounds contain ‘lanterns’ [M2(XO4)9] (M = (Sc, Ag), Sc; X = Mo, W), which are strengthened by three AgO2 dumbbells to give isolated building blocks [Ag3M2(XO4)9] forming two-story hexagonal layers resembling the structure of glaserite K3Na(SO4)2. Similar layers of [Ag3Sc2(WO4)9]9− building blocks were also found by us in the structure of Rb9–xAg3+xSc2(WO4)9, which is close to that of Rb9Ag3Sc2(MoO4)9. Similar layers of the [M2(TO4)9] units were also observed in Cs7Na5Yb2(MoO4)9 and Na13Sr2Ta2(PO4)9. The title compounds belong to the series of rhombohedral triple molybdates and tungstates with a ≈ 9–10 Å and large c-periods (more than 20 Å), which have layered or open 3D framework structures. Like many compounds of this series, Rb7Ag5Sc2(XO4)9 (Х = W, Mo) at elevated temperatures have significant ionic conductivity reaching values 6.1·10−3 S cm−1 at 703 K (X = Mo) and 1.4·10−3 S cm−1 at 733 K (X = W) with Еа = 0.7 eV and 0.6 eV, respectively.

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Держатели документа:
Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Sakh'yanova St. 6, Buryat Republic, Ulan-Ude, 670047, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Akad. Lavrentyev Ave. 3, Novosibirsk630090, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50 bld.38, Krasnoyarsk, 660036, Russian Federation
Kemerovo State University, Krasnaya St., 6, Kemerovo, 650000, Russian Federation
Skolkovo Institute of Science and Technology, Moscow121205, Russian Federation

Доп.точки доступа:
Spiridonova, T. S.; Solodovnikov, S. F.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Solodovnikova, Z. A.; Savina, A. A.; Kadyrova, Y. M.; Sukhikh, A. S.; Kovtunets, E. V.; Khaikina, E. G.
}
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Formation of noble metal phases (Pt, Pd, Rh, Ru, Ir, Au, Ag) in the process of fractional crystallization of the CuFeS2 melt / E. F. Sinyakova, I. G. Vasilyeva, A. S. Oreshonkov [et al.] // Minerals. - 2022. - Vol. 12, Is. 9. - Ст. 1136, DOI 10.3390/min12091136. - Cited References: 61. - This work was supported by the Russian Federation state assignment of Sobolev Institute of Geology and Mineralogy of SB RAS, Nikolaev Institute of Inorganic Chemistry SB RAS, and Kirensky Institute of Physics of Federal Research Center KSC SB RAS. The grant number is projects II.1.64. and 40330-2016-0001 . - ISSN 2075-163X
Кл.слова (ненормированные):
Cu-Fe-S system -- noble metals -- directional crystallization -- intermediate solid solution -- fine inclusions
Аннотация: The quasi-equilibrium directional crystallization of the melt composition (at. %): Cu 24.998, Fe 25.001, S 49.983, with Ag 0.002, Pd 0.003, Ru 0.004, Rh 0.006, and Au, Pt, Ir (each as 0.001) was carried out. The crystallized cylindrical ingot consisted of two primary zones and three secondary zones with different chemical and phase compositions. The compositions of the primary zones corresponded to high-temperature intermediate solid solution (zone I) and liquid enriched in sulfur (zone II). The compositions of the secondary zones corresponded to low-temperature intermediate solid solution and chalcopyrite (zone Ia), the same intermediate solid solution with chalcopyrite and bornite (zone Ib), and again with bornite, chalcocite, and idaite (zone II). We plotted the distribution curves of Fe, Cu, and S along the ingot, calculated the distribution coefficients of the components during directional crystallization, and clearly showed that, from the initial stoichiometric composition CuFeS2, the intermediate solid solution enriched in Fe and depleted in S is crystallized. Based on the data of directional crystallization and thermal analysis, a cross section was constructed in the intermediate solid solution-sulfide melt region of the Cu-Fe-S system. With solubility in the solid Cu-Fe sulfides lying below detection limit of scanning electron microscopy/energy-dispersive X-ray spectrometry (SEM/EDS), noble elements occurred as individual phases of a size more often <10 µm. They were identified as Ag, RuS2, PdS, Au* (an Au based alloy), (Rh, Ir, Ru)3S8, (Rh, Ir)3S8, Rh3S8, and (Cu, Fe)~2(Pt, Rh)1S~5 phases by electron microprobe. Based on ab initio calculations of crystal structure, electronic band structure, and lattice dynamics of idealized laurite RuS2 phase and the idealized Ir3S8, Rh3S8, and Ru3S8 phases, the interpretation of Raman spectrum of the cation-mixed (Ru, Rh, Ir)S2 sulfide was presented for the first time.

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Держатели документа:
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Ac. Lavrentieva ave. 3, Novosibirsk, 630090, Russian Federation
Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation
School of Engineering and Construction, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Sinyakova, E. F.; Vasilyeva, I. G.; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Goryainov, S. V.; Karmanov, N. S.
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    Kinetic study of a solid-state reaction in Ag/Al multilayer thin films by in situ electron diffraction and simultaneous thermal analysis / S. M. Zharkov, R. R. Altunin, V. V. Yumashev [et al.] // J. Alloys Compd. - 2021. - Vol. 871. - Ст. 159474, DOI 10.1016/j.jallcom.2021.159474. - Cited References: 47. - This work was supported by the Russian Science Foundation, Russia under grant #181300 080 . - ISSN 0925-8388. - ISSN 1873-4669
   Перевод заглавия: Исследование кинетики твердофазной реакции в мультислойных тонких пленках Ag/Al методами in situ дифракции электронов и синхронного термического анализа

РУБ Chemistry, Physical + Materials Science, Multidisciplinary + Metallurgy & Metallurgical Engineering
Рубрики:
STRUCTURAL PHASE-TRANSFORMATIONS
COMMITTEE RECOMMENDATIONS
ICTAC KINETICS
Кл.слова (ненормированные):
Thin films -- Intermetallic compound -- Solid-state reaction -- Phase transformations -- Kinetic model -- Activation energy
Аннотация: A solid-state reaction process in Ag/Al multilayer thin films has been investigated by the methods of in situ electron diffraction, simultaneous thermal analysis, transmission electron microscopy and X-ray diffraction with the aim of studying the phase formation kinetics of intermetallic compounds. The sequence of the phase transformations in the solid-state reaction has been established: Ag+Al→(Ag)+(Al)→(Ag)+δ-Ag2Al→μ-Ag3Al. The process of the solid-state interaction has been shown to consist of two steps; each of them is described by a kinetic model of the nth order reactions with autocatalysis. The kinetic parameters of the autocatalytic process of the phase formation for δ-Ag2Al and µ-Ag3Al, have been determined, in particular, their apparent activation energy: 126 kJ/mol and 106 kJ/mol, respectively.

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Держатели документа:
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
RAS, Kirensky Inst Phys, SB, Fed Res Ctr,KSC, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.
RAS, Inst Chem & Chem Technol, SB, Fed Res Ctr,KSC, Akademgorodok 50-24, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarskij Rabochij 31, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Zharkov, S. M.; Жарков, Сергей Михайлович; Altunin, R. R.; Yumashev, V. V.; Moiseenko, E. T.; Belousov, O. V.; Solovyov, L. A.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Zeer, G. M.; Russian Science Foundation, RussiaRussian Science Foundation (RSF) [181300 080]
}
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Cu-Ag and Ni-Ag meshes based on cracked template as efficient transparent electromagnetic shielding coating with excellent mechanical performance / A. S. Voronin, Y. V. Fadeev, I. V. Govorun [et al.] // J. Mater. Sci. - 2021. - Vol. 56. Is. 26. - P. 14741-14762, DOI 10.1007/s10853-021-06206-4. - Cited References: 79. - This work was supported by Russian Foundation for Basic Research project «mol_a» № 18-38-00852 and a scholarship from the President of the Russian Federation SP-2235.2019.1. The sputtering Ag seed mesh and physicochemical analysis of materials was carried out on the equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS» . - ISSN 0022-2461. - ISSN 1573-4803

РУБ Materials Science, Multidisciplinary
Рубрики:
COPPER NANOWIRES
   METALLIC MESH
   PLASTIC SUBSTRATE
   ELECTRODES
   FILMS
Аннотация: Nowadays, the technical advances call for efficient electromagnetic interference (EMI) shielding of transparent devices which may be subject to data theft. We developed Cu–Ag and Ni–Ag meshes on flexible PET substrate for highly efficiency transparent EMI shielding coating. Cu–Ag and Ni–Ag meshes obtained with galvanic deposition of copper and nickel on thin Ag seed mesh which was made by cracked template method. Coefficients S11, S21 and shielding efficiency (SE) were measured for Cu–Ag and Ni–Ag meshes in X-band (8–12 GHz) and K-band (18–26.5 GHz). 90 s copper deposition increase SE from 23.2 to 43.7 dB at 8 GHz with a transparency of 82.2% and a sheet resistance of 0.25 Ω/sq. The achieved maximum SE was 47.6 dB for Cu–Ag mesh with 67.8% transparency and 41.1 dB for Ni–Ag mesh with 77.8% transparency. Cu–Ag and Ni–Ag meshes have high bending and long-term stability. Minimum bend radius is lower than 100 µm. This effect allows to produce different forms of transparent shielding objects, for example, origami method. Our coatings are the leading among all literary solutions in three-dimensional coordinates: of sheet resistance–optical transmittance–cost of produced.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr,FRC KSC SB RAS, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Reshetnev Univ, Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Voronin, A. S.; Fadeev, Y. V.; Govorun, I. V.; Говорун, Илья Валерьевич; Podshivalov, I. V.; Подшивалов, Иван Валерьевич; Simunin, M. M.; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Karpova, D. V.; Smolyarova, T. E.; Смолярова, Татьяна Евгеньевна; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Karacharov, A. A.; Nemtsev, I. V.; Немцев, Иван Васильевич; Khartov, S. V.; Russian Foundation for Basic Research projectRussian Foundation for Basic Research (RFBR) [18-38-00852]; Russian FederationRussian Federation [SP-2235.2019.1]
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Алтунин, Р. Р.
Влияние структурных свойств на электросопротивление тонких пленок Al/Ag в процессе твердофазной реакции / Р. Р. Алтунин, Е. Т. Моисеенко, С. М. Жарков // Физ. тверд. тела. - 2020. - Т. 62, Вып. 4. - С. 621-626, DOI 10.21883/FTT.2020.04.49130.652. - Библиогр.: 43. - Работа выполнена при финансовой поддержке Российского научного фонда (грант No 18-13-00080) . - ISSN 1063-7834. - ISSN 1090-6460
Кл.слова (ненормированные):
тонкие пленки -- фазообразование -- Al/Ag -- твердофазная реакция -- дифракция электронов -- удельное электросопротивление
Аннотация: На основании результатов исследования процессов твердофазной реакции в тонких пленках Al/Ag (атомное соотношение Al : Ag = 1 : 3) методами in situ дифракции электронов и измерения величины удельного электросопротивления установлена температура начала реакции, а также предложена модель структурных фазовых переходов. Твердофазная реакция начинается при 70oC с образования твердого раствора Al-Ag на границе раздела нанослоев алюминия и серебра. Установлено, что в процессе реакции последовательно формируются интерметаллические соединения γ-Ag2Al → μ-Ag3Al. Показано, что возможность формирования фазы μ-Ag3Al при твердофазной реакции в тонких пленках Al/Ag зависит от соотношения алюминия и серебра, при этом формирование фазы μ-Ag3Al начинается только после того как весь ГЦК-алюминий прореагирует.

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Переводная версия Altunin R. R. Effect of the structural properties on the electrical resistivity of the Al/Ag thin films during the solid-state reaction [Текст] / R. R. Altunin, E. T. Moiseenko, S. M. Zharkov // Phys. Solid State. - 2020. - Vol. 62 Is. 4.- P.708-713

Держатели документа:
Сибирский федеральный университет, Красноярск, Россия
Институт физики им. Л.В. Киренского Сибирского отделения Российской академии наук, Красноярск, Россия

Доп.точки доступа:
Моисеенко, Е. Т.; Жарков, Сергей Михайлович; Zharkov, S. M.
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10.

    Characterization of the iron oxide phases formed during the synthesis of core-shell FexOy@C nanoparticles modified with Ag / D. A. Petrov, C. R. Lin, R. D. Ivantsov [et al.] // Nanotechnology. - 2020. - Vol. 31, Is. 39. - Ст. 395703, DOI 10.1088/1361-6528/ab9af2. - Cited References: 46. - The reported study was funded 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. The samples of series 1 were studied with the support of the Ministry of Science and Higher Education of the Russian Federation within the State assignment FSRC «Crystallography and Photonics» RAS. The electron microscopy 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 1361-6528
   Перевод заглавия: Идентификация фаз оксида железа, формирующихся в процессе синтеза наночастиц FexOy@C с морфологией ядро-оболочка, модифицированных Ag
Кл.слова (ненормированные):
core–shell nanoparticles -- iron oxides -- carbon shell -- Ag nanoparticles
Аннотация: Core–shell FexOy@C nanoparticles (NPs) modified with Ag were studied with x-ray diffraction, transmission electron microscopy, energy dispersive elemental mapping, Mössbauer spectroscopy, static magnetic measurements, and optical magnetic circular dichroism (MCD). FexOy@C NPs synthesized by the pyrolysis process of the mixture of Fe(NO3)3 centerdot 9H2O with oleylamine and oleic acid were added to a heated mixture of oleylamine and AgNO3 in different concentrations. The final product was a mixture of iron oxide crystalline NPs in an amorphous carbon shell and Ag crystalline NPs. The iron oxide NPs were presented by two magnetic phases with extremely close crystal structures: Fe3O4 and γ-Fe2O3. Ag is shown to form crystalline NPs located very close to the iron oxide NPs. An assumption is made about the formation of hybrid FexOy@C-Ag NPs. Correlations were obtained between the Ag concentration in the fabricated samples, their magnetic properties and the MCD spectrum shape. Introducing Ag led to a approximately linear decrease of the NPs saturation magnetization depending upon the Ag concentration, it also resulted into the MCD spectrum shift to the lower light wave energies. MCD was also studied for the Fe3O4@C NPs synthesized earlier with the same one-step process using different heat treatment temperatures, and MCD spectra were compared for two series of NPs. A possible contribution of the surface plasmon excitation in Ag NPs to the MCD spectrum of the FexOy@C-Ag NPs is discussed.

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Держатели документа:
Kirensky Institute of Physics, FRC, KSC, SB RAS, Krasnoyarsk 660036, Russia
National Pingtung University, Pingtung City, Pingtung County 90003, Taiwan
Siberian Federal University, Svobodny Av., 79, Krasnoyarsk 660041, Russia
Shubnikov Institute of Crystallography of FSRC 'Crystallography and Photonics' RAS, Moscow 119333, Russia

Доп.точки доступа:
Petrov, D. A.; Петров, Дмитрий Анатольевич; Lin, C. R.; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Yurkin, G. Yu.; Юркин, Глеб Юрьевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Tseng, Y. T.; Lin, E. S.; Edelman, I. S.; Эдельман, Ирина Самсоновна; Baskakov, A. O.; Starchikov, S. S.; Lyubutin, I. S.
}
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11.

    Magnetic and magneto-optical properties of Fe3O4 nanoparticles modified with Ag / D. A. Petrov [et al.] // J. Magn. Magn. Mater. - 2020. - Vol. 493. - Ст. 165692, DOI 10.1016/j.jmmm.2019.165692. - Cited References: 45. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project № 18-42-243021 and 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. . - ISSN 0304-8853
   Перевод заглавия: Магнитные и магнитооптические свойства наночастиц Fe3O4, модифицированных серебром
Кл.слова (ненормированные):
Fe3O4–Ag nanostructures -- Superparamagnetism -- Magnetic circular dichroism
Аннотация: Effect of Ag inclusions on magnetic properties and magnetic circular dichroism (MCD) of Fe3O4 nanoparticles (NPs) in the mixed system of Fe3O4 and Ag NPs in dependence on the relative concentration of the components is presented. The samples were synthesized by the thermal decomposition of the mixture of constant concentration of Fe(NO3)3·9H2O and varied concentration of AgNO3. The synthesized powdered samples consisted of Fe3O4 and Ag NPs located very close with each other, and in the most cases the Fe3O4 NPs were bordered with the Ag nanocrystals. The Ag introducing in the samples does not effect, practically, in the Fe3O4 NPs morphology and size distribution. At the same time, Ag NPs in the powdered samples cause a decrease in the Fe3O4 NPs magnetization and shift of the blocking temperature to lower temperatures, both approximately proportional to the Ag concentration. Most significant changes are revealed in the MCD spectra in the energy region of 1.2–2.2 eV. We have discussed the influence of the Ag NPs on the MCD spectra features in terms of the charge-transfer electron transitions. © 2019 Elsevier B.V.

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Держатели документа:
Kirensky Institute of Physics SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny Av., 79, Krasnoyarsk, 660041, Russian Federation
National Pingtung University, Pingtung City, Pingtung County 90003, Taiwan

Доп.точки доступа:
Petrov, D. A.; Петров, Дмитрий Анатольевич; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Lin, C. -R.; Tso, C. -T.; Hsu, H. -S.; Tseng, Y. -T.; Lin, E. -S.; Edelman, I. S.; Эдельман, Ирина Самсоновна
}
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12.

Altunin, R. R.
Effect of the structural properties on the electrical resistivity of the Al/Ag thin films during the solid-state reaction / R. R. Altunin, E. T. Moiseenko, S. M. Zharkov // Phys. Solid State. - 2020. - Vol. 62, Is. 4. - P. 708-713, DOI 10.1134/S1063783420040034. - Cited References: 43. - This study was supported by the Russian Science Foundation, project no. 18-13-00080. . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
LIGHT-EMITTING-DIODES
   PHASE-FORMATION
   AG
   AL
   DIFFUSION
   SUPPRESSION
   INTERFACE
   SURFACE
   GROWTH
   HEAT
Кл.слова (ненормированные):
thin films -- phase formation -- Al/Ag -- solid-state reaction; -- electron diffraction -- resistivity
Аннотация: Based on the results of in situ electron diffraction study of the solid-state reaction and electrical resistivity measurements on the Al/Ag thin films with an atomic ratio of Al : Ag = 1 : 3, the temperature of the reaction onset has been established and a model of the structural phase transitions has been proposed. The solid-state reaction begins at 70°C with the formation of the Al–Ag solid solution at the interface between the aluminum and silver nanolayers. It has been found that, in the course of the reaction, the intermetallic compounds γ-Ag2Al → μ-Ag3Al are successively formed. It is shown that the possibility of the formation of the μ‑Ag3Al phase during the solid-state reaction in the Al/Ag thin films depends on the aluminum-to-silver ratio, while the formation of the μ-Ag3Al phase begins only after all fcc aluminum has reacted.

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Публикация на русском языке Алтунин Р. Р. Влияние структурных свойств на электросопротивление тонких пленок Al/Ag в процессе твердофазной реакции [Текст] / Р. Р. Алтунин, Е. Т. Моисеенко, С. М. Жарков // Физ. тверд. тела. - 2020. - Т. 62 Вып. 4. - С. 621-626

Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Moiseenko, E. T.; Zharkov, S. M.; Жарков, Сергей Михайлович; Russian Science FoundationRussian Science Foundation (RSF) [18-13-00080]
}
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13.

    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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14.

Жарков, Сергей Михайлович.
Твердофазная реакция в тонкопленочной системе Al/Ag / С. М. Жарков, Р. Р. Алтунин, Е. Т. Моисеенко ; Научный совет по электронной микроскопии РАН [и др.] // XXVIII Российская конференция по электронной микроскопии (РКЭМ-2020) : сб. тез. докладов : в 3-х т. - 2020. - Т. 2. - P. 228-229, DOI 10.37795/RCEM.2020.82.12.017. - Библиогр.: 1 . - ISBN 978-5-6045073-2-2

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Алтунин, Роман Русланович; Altunin, R. R.; Моисеенко, Евгений Тимофеевич; Moiseenko, E. T.; Zharkov, S. M.; Научный совет по электронной микроскопии РАН; Федеральный научно-исследовательский центр "Кристаллография и фотоника" РАН; Институт проблем технологии микроэлектроники и особочистых материалов РАН; "Курчатовский институт", научно-исследовательский центр; Российская конференция по электронной микроскопии (28 ; 2020 ; 5-10 сент. ; Черноголовка, Московская обл.)Школа молодых ученых (6 ; 2020 ; 5-10 сент. ; Черноголовка, Московская обл.)
}
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15.

    Ratio fluorescent hybrid probe for visualized fluorescence detection of H2O2 in vitro and in vivo / R. Dong, Y. Yao, D. Li [et al.] // Sens. Actuators B: Chem. - 2020. - Vol. 321. - Ст. 128643, DOI 10.1016/j.snb.2020.128643. - Cited References: 65. - The present work was supported by the National Natural Science Foundations of China (Grant No. 21671070 ), the project supported by the GDUPS (2018) for Prof. Bingfu LEI, the Project for Construction of High-level University in Guangdong Province of China, the Guangzhou Science & Technology Project , China (No. 201707010033 ), the Special Funds for the Cultivation of Guangdong College Students’ Scientific and Technological Innovation (No. 201910564035 ), and the National Undergraduate Innovation and Entrepreneurship Training Program granted for Riyue Dong . - ISSN 0925-4005
   Перевод заглавия: Соотношение флуоресценции в гибридных зондах для визуального детектирования флуоресценции H2O2 in vitro и in vivo
Кл.слова (ненормированные):
Si-O -- QDs -- Ag -- Nanoclusters -- Visualized fluorescence detection -- H2O2 sensing in vivo and in vitro
Аннотация: A silicon oxide quantum dots (Si-O QDs) and Ag nanoclusters hybrid nanosensing probe with dual-emission and small nanocrystals that acts as an “off-on” ratio fluorescent probe for hydrogen peroxide (H2O2) detection was developed. The probe was used to measure the H2O2 concentration generated by mitochondria in vitro via recording the I455/I680 fluorescence ratio. Furthermore, this hybrid probe was applied to monitor the wound-induced H2O2 in lettuce leaf, and realized the visualized fluorescence qualitative detection H2O2 in vivo via laser scanning confocal microscope. The working mechanism of the probe is also investigated. Inner filter effect (IFE) estimation, Fourier transform infrared (FTIR) spectra and high-resolution transmission electron microscopy (HRTEM) images were applied to study the quenching mechanism and recovering reason of Si-O QDs fluorescence. The results show that the blue fluorescence of Si-O QDs can be quenched by Ag NCs via the IFE and fluorescent resonance energy transfer (FRET) effect. After adding H2O2, the surface groups of Ag NCs was changed and the IFE and FRET effects between the Si-O QDs and Ag NCs are disabled, thus the quenched Si-O QDs luminescence can be regularly recovered.

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College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou, 510642, China
Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, Guangzhou, 510642, China
SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Dong, R.; Yao, Y.; Li, D.; Zhang, H.; Li, W.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Liu, Y.; Lei, B.
}
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16.

    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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17.

Bio-functionalization of phytogenic Ag and ZnO nanobactericides onto cellulose films for bactericidal activity against multiple drug resistant pathogens / S. Baker [et al.] // J. Microbiol. Methods. - 2019. - Vol. 159. - P. 42-50, DOI 10.1016/j.mimet.2019.02.009. - Cited References: 59 . - ISSN 0167-7012. - ISSN 1872-8359

РУБ Biochemical Research Methods + Microbiology
Рубрики:
SILVER NANOPARTICLES
   ANTIMICROBIAL ACTIVITY
   SIZE
   COMPOSITES
   MEMBRANE
Кл.слова (ненормированные):
Bupleurum aureum -- Rio-functionalization -- Silver nanobactericides -- Zinc oxide nanobactericides -- Multi-drug resistance pathogens -- Bacterial cellulose
Аннотация: The present study describes the synthesis of silver and zinc oxide nanobactericides from the phytogenic source Bupleurum aureum The synthesized nanobactericides were characterized and evaluated for bio-functionalization onto bacterial cellulose membrane which was synthesized by Komagataeibactencylinus B-12068 culture strain. The synthesis of nanobacterides were initially confirmed using UV-Visible spectroscopy which indicated localized surface resonance (LSPR) peaks at 415 nm for silver nanobactericides and 280 nm for zinc nanobactericides. The nature of the capping agent for synthesized nanobactericides was predicted using FTIR which confirmed the presence of functional moieties. XRD analysis revealed their crystalline nature while morphological characteristics were studied using TEM which confirmed the polydispersity of nanobactericides with the average size in the range of 20-25 nm. The nanobactericides were tested for their antimicrobial activity against seven multi-drug resistant pathogens which were clinically isolated from patients suffering from a myriad of microbial infections. The tested pathogens had antimicrobial resistance to ten different antibiotics and have been reported to be the major cause of nosocomial infections. The nanobactericides displayed significant activity against the test pathogens. Silver nanobactericides showed the highest activity against Escherichia coli strain 55 with a 24 mm zone of inhibition while zinc oxide nanobactericides displayed the highest activity against methicillinresistant Staphylococcus aureus (MRSA) with a 20 mm inhibition zone. The bio- functionalized cellulose films (BCF) were characterized using SEM along with physicochemical analysis. The BCF's were evaluated for anti-bacterial activity against test pathogens which resulted in marked antimicrobial potential against multi-drug resistant bacteria and therefore has the potential to be utilized as an efficient alternative to counter drug resistant pathogens.

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Держатели документа:
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Sch Fundamental Biol & Biotechnol, Krasnoyarsk, Russia.
Krasnoyasrk State Med Univ, Dept Microbiol, Krasnoyarsk Partizana Zheleznyakast 1, Krasnoyarsk 660022, Russia.
RAS, KSC SB, Fed Res Ctr, Kirensky Inst Phys, Akademgorodok 50,Bld 38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Petr & Nat Gas Engn, Krasnoyarsk, Russia.

Доп.точки доступа:
Baker, Syed; Prudnikova, Svetlana V.; Shumilova, Anna A.; Perianova, Olga V.; Zharkov, S. M.; Жарков, Сергей Михайлович; Kuzmin, A.
}
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18.

    Phytogenic Synthesis of Ag Bionano-Antibiotics Against ESKAPE Drug Resistant Communities in Krasnoyarsk, Siberia / B. Syed [et al.] // J. Cluster Sci. - 2019. - Vol. 30, Is. 3. - P. 589-597, DOI 10.1007/s10876-019-01518-7. - Cited References: 44. - uthors are thankful for facilities provided by Siberian Federal University to carry out the present study. Authors are grateful to Krasnoyarsk Medical University for providing opportunity to carry out the present study. . - ISSN 1040-7278
   Перевод заглавия: Фитогенный синтез биологических нано-антибиотиков на основе серебра против фармакорезистентных болезнетворных микроорганизмов, распространенных в Красноярске, Россия
Кл.слова (ненормированные):
Heracleum dissectum -- Silver nano-antibiotics -- ESKAPE -- Antimicrobial-resistant -- Krasnoyarsk -- Siberia
Аннотация: The present study reports synthesis of silver nano-antibiotics from aqueous extract of H. dissectum. The nano-antibiotics were characterized using UV–visible spectra which displayed maximum absorbance at 430 nm. The role of phytocomponents as reducing agent and stabilization of silver nano-antibiotics was depicted with Fourier-transform infrared spectroscopy which revealed presence of hydroxyl and carboxyl groups associated with silver nano-antibiotics. The crystalline nature was studied with X-ray diffraction which showed Bragg’s intensities at 2θ angle which denoted (101), (111), (200), (220), (311) planes. The morphological characteristics were studied using Transmission Electron Microscopy to reveal the size ranging from 5 to 50 nm. The bactericidal activity of nano-antibiotics was studied via well diffusion and minimal inhibitory concentration assay against members of drug-resistant communities bearing resistant to more than ten standard antibiotics. Nano-antibiotics displayed highest activity against Ps. aeruginosa strain 55 and Methicillin-resistant Staphylococcus aureus with 16 mm zone of inhibition followed by Kl. pneumoniae strain 104 and E. coli strain 55. Moderate activity was observed against Ac. baumannii strains with 12 mm zone of inhibition. The obtained results envision the role of plant mediated nano-antibiotics as one of the best suited alternatives towards combating drug resistant pathogens.

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Держатели документа:
Department of Microbiology, Krasnoyasrk State Medical University named after Prof. VF. Voino-Yasenetskiy, Partizana-Zheleznyaka Street, 1, Krasnoyarsk, 660022, Russian Federation
Siberian Federal University, Svobodnyy pr., 79, Krasnoyarsk, 660041, Russian Federation
School of Fundamental Biology and Biotechnology, Siberian Federal University, Krasnoyarsk, Russian Federation
Federal Research Center KSC SB RAS, Kirensky Institute of Physics, Akademgorodok 50, Bld. 38, Krasnoyarsk, 660036, Russian Federation
School of Petroleum and Natural Gas Engineering, Siberian Federal University, Krasnoyarsk, Russian Federation
Department of Environmental Sciences, Jozef Stefan Institute, Jamova 39, Ljubljana, 1000, Slovenia
Department of Biotechnology, M. M. Engineering College, Maharishi Markandeshwar University (MMU), Mullana, Ambala, India

Доп.точки доступа:
Syed, B.; Prudnikova, S. V.; Perianova, O. V.; Zharkov, S. M.; Жарков, Сергей Михайлович; Kuzmin, A.; Chouhan, R. S.; Potkina, N. K.; Khohlova, O. Y.; Lobova, T. I.; Singh, M.
}
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19.

Core-shell iron oxide-carbon nanoparticles modified with Ag. synthesis, morphology, magnetic properties / D. A. Petrov, R. D. Ivantsov, S. M. Zharkov [et al.] // Euro-asian symposium "Trends in magnetism" (EASTMAG-2019) : Book of abstracts / чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст. J.P18. - P. 220-221. - Cited References: 2. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project No. 18-42-243021 and by Joint Research Project of Russian Foundation for Basic Research and Ministry of Science and Technology, Taiwan MOST No. 19-52-52002 . - ISBN 978-5-9500855-7-4

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
National Pingtung University, Pingtung County, Taiwan

Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Petrov, D. A.; Петров, Дмитрий Анатольевич; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Yurkin, G. Yu.; Юркин, Глеб Юрьевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Lin, C.-R.; Tseng, Y.-T.; Российская академия наук; Уральское отделение РАН; Институт физики металлов им. М. Н. Михеева Уральского отделения РАН; Уральский федеральный университет им. первого Президента России Б.Н. Ельцина; Российский фонд фундаментальных исследований; Euro-Asian Symposium "Trends in MAGnetism"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg); "Trends in MAGnetism", Euro-Asian Symposium(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
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20.

    On the nature of citrate-derived surface species on Ag nanoparticles: Insights from X-ray photoelectron spectroscopy / Y. L. Mikhlin [et al.] // Appl. Surf. Sci. - 2018. - Vol. 427. - P. 687-694, DOI 10.1016/j.apsusc.2017.09.026. - Cited References: 50. - We thank the Russian-German bilateral program “Russian-German laboratory at BESSY II” and the staff of the RGLab and HZB for their kind assistance with XANES experiments. . - ISSN 0169-4332
   Перевод заглавия: Исследования методом фотоэлектронной рентгеновской спектроскопии адсорбатов на поверхности наночастиц Ag
Кл.слова (ненормированные):
Silver nanoparticles -- Adsorption -- Citrate capping -- X-ray photoelectron spectroscopy
Аннотация: Citrate is an important stabilizing, reducing, and complexing reagent in the wet chemical synthesis of nanoparticles of silver and other metals, however, the exact nature of adsorbates, and its mechanism of action are still uncertain. Here, we applied X-ray photoelectron spectroscopy, soft X-ray absorption near-edge spectroscopy, and other techniques in order to determine the surface composition and to specify the citrate-related species at Ag nanoparticles immobilized from the dense hydrosol prepared using room-temperature reduction of aqueous Ag+ ions with ferrous ions and citrate as stabilizer (Carey Lea method). It was found that, contrary to the common view, the species adsorbed on the Ag nanoparticles are, in large part, products of citrate decomposition comprising an alcohol group and one or two carboxylate bound to the surface Ag, and minor unbound carboxylate group; these may also be mixtures of citrate with lower molecular weight anions. No ketone groups were specified, and very minor surface Ag(I) and Fe (mainly, ferric oxyhydroxides) species were detected. Moreover, the adsorbates were different at AgNPs having various size and shape. The relation between the capping and the particle growth, colloidal stability of the high-concentration sol and properties of AgNPs is briefly considered. © 2017 Elsevier B.V.

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Держатели документа:
Institute of Chemistry and Chemical Technology of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/24, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodny av. 79, Krasnoyarsk, Russian Federation
Department of Chemistry and The Smalley-Curl Institute, Rice University, 6100 Main Street, Houston, United States
Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation
Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences, Lavrent’, ev av. 5, Novosibirsk, Russian Federation

Доп.точки доступа:
Mikhlin, Y. L.; Vorobyev, S. A.; Saikova, S. V.; Vishnyakova, E. A.; Romanchenko, A. S.; Zharkov, S. M.; Жарков, Сергей Михайлович; Larichev, Y. V.
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