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Karpov, S. V.
The role of the electron tunneling effect in the coagulation kinetics of polydisperse metal nanocolloids / S. V. Karpov, P. N. Semina, A. P. Gavrilyuk // Colloid J. - 2012. - Vol. 74, Is. 3. - P. 305-312, DOI 10.1134/S1061933X12030052. - Cited References: 16. - Authors are thankful to G. A. Chiganova for discussions and helpful comments. Studies were carried out with the support of grants: the Presidium of RAS No 29 and No 31, OFN RAS III.9.5, IP SB RAS No 43, IP SB RAS (and SFU) No 101. . - ISSN 1061-933X

РУБ Chemistry, Physical
Рубрики:
PARTICLES
Аннотация: The energy of pair interactions between metal nanoparticles of different sizes is shown to be able to increase upon coagulation due to the additional electrostatic effect resulting from mutual heteropolar charging of the particles. The tunnel electron transfer occurring upon the collisions between particles of different sizes may be the reason for the charging. The transfer is caused by the dependence of the electron work function on the particle size. The electron transfer through the interparticle gap equalizes the Fermi levels in particles of different sizes and is associated with this dependence. Using the example of bimodal silver nanocolloids, it is shown that mutual heteropolar charging of particles with different sizes may accelerate the coagulation of polydisperse colloidal systems by an order of magnitude or more as compared with monodisperse systems, in which this effect is absent.

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Публикация на русском языке Карпов, Сергей Васильевич. Роль электронного туннельного эффекта в кинетике коагуляции полидисперсных наноколлоидов металлов [Текст] / С. В. Карпов, П. Н. Сёмина, А. П. Гаврилюк // Коллоид. журн. - М. : Наука, 2012. - Т. 74 № 3. - С. 329-336

Держатели документа:
[Karpov, S. V.
Semina, P. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Karpov, S. V.] Siberian Fed Univ, Krasnoyarsk 660028, Russia
[Gavrilyuk, A. P.] Russian Acad Sci, Siberian Branch, Inst Computat Modeling, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Semina, P. N.; Семина, Полина Николаевна; Gavrilyuk, A. P.; Карпов, Сергей Васильевич
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Laser photolysis of fluorone dyes in a chitosan matrix / E. A. Slyusareva [et al.] // Quantum Electron. - 2012. - Vol. 42, Is. 8. - P. 687-692, DOI 10.1070/QE2012v042n08ABEH014860. - Cited References: 32 . - ISSN 1063-7818

РУБ Engineering, Electrical & Electronic + Physics, Applied
Рубрики:
POLY(VINYL ALCOHOL) MATRIX
   XANTHENE DYES
   ROSE-BENGAL
   FLUORESCENCE PROPERTIES
   DELAYED FLUORESCENCE
   ORGANIC-MOLECULES
   TRIPLET-STATE
   EXCITATION
   ABSORPTION
   PHOSPHORESCENCE
Кл.слова (ненормированные):
laser photolysis -- fluorescein -- dibromofluorescein -- eosin Y -- erythrosin B -- Rose Bengal -- chitosan -- photobleaching kinetics -- two-step absorption
Аннотация: Kinetics of laser-induced photobleaching of fluorone dyes (fluorescein, dibromofluorescein, eosin Y, erythrosin B, Rose Bengal) is studied in a chitosan matrix. For all dyes the bleaching kinetics at the intensities of laser radiation 0.7 — 11.9 W cm-2 demonstrates quasi-monomolecular behaviour. The results are analysed using a kinetic model, based on the four-level (S0, S1, T1, Tn) scheme of the dye with chemically active triplet states taken into account. It is shown that the rate constants of the chemical reaction involving higher triplet states in the dyes studied amount to (3.9 — 18.6) × 106 s-1 and exceed the analogous values for the reaction involving the first lower triplet states by nine orders of magnitude. The rate of reaction involving the first triplet states appeared to be higher by one — two orders of magnitude than that in the case of higher triplet states involved because of low population of the latter. The possible mechanism of dye bleaching with participation of chitosan that consists in reduction of the dye to the leuco form by transfer of hydrogen from the chitosan matrix is discussed.

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Публикация на русском языке Лазерный фотолиз флуороновых красителей в хитозановой матрице [Текст] / Е. А. Слюсарева [и др.] // Квант. электроника : Физический институт им. П.Н.Лебедева РАН, 2012. - Т. 42 № 8. - С. 687-692

Держатели документа:
[Slyusareva, E. A.
Sizykh, A. G.
Gerasimova, M. A.
Slabko, V. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Myslivets, S. A.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Slyusareva, E. A.; Sizykh, A. G.; Gerasimova, M. A.; Slabko, V. V.; Слабко, Виталий Васильевич; Myslivets, S. A.; Мысливец, Сергей Александрович
}
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    Lasers and applications [proceedings]. Vol. III. Ligth-induced kinetics. Education / Int. school of lasers and applicat. ; ed.: A. K. Popov, V. G. Arkhipkin, V. V. Slabko ; presid. K. S. Aleksandrov. - Krasnoyarsk : [б. и.], 1991. - 219 с. - Refs. at the and of the paps. - 200 экз. - Б. ц.
Перевод заглавия: Лазеры и приложения. Международная школа по лазерам : сб.
   Перевод заглавия: Лазеры и приложения. Международная школа по лазерам : сб.

Держатели документа:
Kirensky Institute of Physics

Доп.точки доступа:
Popov, A. K. \ed.\; Попов, Александр Кузьмич; Aleksandrov, K. S. \presid.\; Александров, Кирилл Сергеевич; Arkhipkin, V. G. \ed.\; Архипкин, Василий Григорьевич; Slabko, V. V. \ed.\; Слабко, Виталий Васильевич; International school of lasers and applications (March 17-23,1989 ; Sayanogorsk)
Свободных экз. нет}
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Nature of the active sites of ferrospheres in the oxidative condensation of methane / A. G. Anshits [et al.] // Kinet. Catal. - 2015. - Vol. 56, Is. 4. - P. 523-531, DOI 10.1134/S0023158415040023. - Cited References:37. - This work was supported by the Russian Science Foundation (grant no. 14-13-00289). . - ISSN 0023. - ISSN 1608-3210. -

РУБ Chemistry, Physical
Рубрики:
GLASS CRYSTAL CATALYSTS
   HIGH-TEMPERATURE
   MOSSBAUER
   MAGNETITES
   MICROSPHERES
   SELECTIVITY
   CONVERSION
   FERRITES
   ASHES
   IRON
Кл.слова (ненормированные):
oxidative condensation of methane -- ferrospheres -- iron spinel -- Mossbauer spectroscopy -- structural defects
Аннотация: The catalytic properties of ferrospheres containing 76–97 wt % Fe2O3 in the oxidative condensation of methane were compared with their phase composition and the distribution of iron cations over the crystallographic positions of iron-containing phases in a steady state. It was established that the reaction route of methane oxidation changed at a Fe2O3 content of 89 wt %. Deep oxidation was the main reaction route on ferrospheres with a Fe2O3 content of <88.8 wt %. At a Fe2O3 content of ≥89 wt %, the yield of C2 hydrocarbons sharply increased and the contribution of deep oxidation decreased. The yield of C2 hydrocarbons correlated with the amount of defects in the structure of iron spinel, which are iron ions with the tetrahedral cation of Ca2+ and the octahedral cation vacancy among the nearest neighbors.

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Публикация на русском языке Природа активных центров ферросфер в процессе окислительной конденсации метана [Текст] / А. Г. Аншиц [и др.] // Кинетика и катализ : Наука, 2015. - Т. 56 № 4. - С. 529-538

Доп.точки доступа:
Anshits, A. G.; Аншиц, Александр Георгиевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Anshits, N. N.; Pletnev, O. N.; Плетнев, Олег Николаевич; Rabchevskii, E. V.; Vereshchagin, S. N.; Kondratenko, E. V.; Russian Science Foundation [4-13-00289]; Russian Congress on Catalysis (2 ; 2014 ; Oct. ; 2–5 ; Samara)
}
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New method for regulating the activity of ABO3 perovskite catalysts / S. N. Vereshchagin [et al.] // Kinet. Catal. - 2015. - Vol. 56, Is. 5. - P. 640-645, DOI 10.1134/S0023158415040199. - Cited References:23. - This work was supported in part by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (grant no. NSh-2886.2014.2). . - ISSN 0023. - ISSN 1608-3210. -

РУБ Chemistry, Physical
Рубрики:
MEMBRANE REACTORS
   METHANE COMBUSTION
   OXIDATION
   OXIDES
   OXYGEN
   PERFORMANCE
   FEATURES
   PHASES
   CO
Кл.слова (ненормированные):
perovskite -- cobalt -- methane -- deep oxidation -- oxidative condensation
Аннотация: A new possibility of changing the activity and selectivity of perovskite catalysts in the oxidative conversion of methane was demonstrated using the Sr x Gd1–x CoO3–δ (0.5 < x < 0.9) compounds as an example. It was established that, at the same chemical composition, the disordering of Sr2+/Gd3+ ions over the A positions of the crystal structure led to a significant increase in activity in the deep oxidation reaction of CH4, as compared with the samples with an ordered distribution of cations.

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Публикация на русском языке Новый способ регулирования активности катализаторов АВО3 со структурой перовскита [Текст] / С. Н. Верещагин [и др.] // Кинетика и катализ. - М. : Наука, 2015. - Т. 56 № 5. - С. 649-664

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

Доп.точки доступа:
Vereshchagin, S. N.; Solov'ev, L. A.; Соловьев, Леонид Александрович; Rabchevskii, E. V.; Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Anshits, A. G.; Аншиц, Александр Георгиевич; Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools [NSh-2886.2014.2]
}
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Relative Isomer Abundance of Fullerenes and Carbon Nanotubes Correlates with Kinetic Stability / A. S. Fedorov [et al.] // Phys. Rev. Lett. - 2011. - Vol. 107, Is. 17. - Ст. 175506, DOI 10.1103/PhysRevLett.107.175506. - Cited References: 29. - S. I, P. V. A, and A. S. F gratefully acknowledge generous hospitality during their visits to Krasnoyarsk (S. I) and Fukui Institute for Fundamental Chemistry in Kyoto and Nagoya University (P. V. A and A. S. F) under support of the joint JSPS-RFBR travel grant 09-02-92107. This work was partially supported by National Science Council (grants NSC96-2113-M009-022-MY3 and NSC96-2113-M009-011-MY3) and Ministry of Education of Taiwan (MOE-ATU project), as well as by the JAEA Research fellowship (P. V. A). We thank the Institute of Computer Modeling (Siberian Division of RAS) and the Joint Supercomputer Center RAS for opportunity to use cluster computers for performing all calculations. . - ISSN 0031-9007

РУБ Physics, Multidisciplinary
Рубрики:
CHEMICAL MOLECULAR-DYNAMICS
   C-60
   BUCKMINSTERFULLERENE
   MECHANISM
   ROAD
Кл.слова (ненормированные):
Carbon Nanostructures -- Kinetic factors -- Kinetic stability -- Thermal vibration -- Carbon nanotubes -- Fullerenes -- Isomers -- Kinetics
Аннотация: A methodology to evaluate the kinetic stability of carbon nanostructures is presented based on the assumption of the independent and random nature of thermal vibrations. The kinetic stability is directly correlated to the cleavage probability for the weakest bond of a given nanostructure. The application of the presented method to fullerenes and carbon nanotubes yields clear correlation to their experimentally observed relative isomer abundances. The general and simple formulation of the method ensures its applicability to other nanostructures for which formation is controlled by kinetic factors.

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Держатели документа:
[Fedorov, A. S.
Fedorov, D. A.] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Kuzubov, A. A.
Avramov, P. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Avramov, P. V.] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
[Nishimura, Y.
Irle, S.] Inst Adv Res, Chikusa Ku, Nagoya, Aichi 4648602, Japan
[Nishimura, Y.
Irle, S.] Dept Chem, Chikusa Ku, Nagoya, Aichi 4648602, Japan
[Witek, Henryk A.] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 30010, Taiwan
[Witek, Henryk A.] Natl Chiao Tung Univ, Inst Mol Sci, Hsinchu 30010, Taiwan
ИФ СО РАН
Kirensky Institute of Physics, Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, av. Svobodny 79, Krasnoyarsk, 660041, Russian Federation
Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata Shirane, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
Institute for Advanced Research, Department of Chemistry, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
Department of Applied Chemistry, Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan

Доп.точки доступа:
Fedorov, A. S.; Федоров, Александр Семенович; Fedorov, D. A.; Федоров, Дмитрий Александрович; Kuzubov, A. A.; Кузубов, Александр Александрович; Avramov, P. V.; Аврамов, Павел Вениаминович; Nishimura, Y.; Irle, S.; Witek, H. A.
}
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The effect of electron density on the kinetics of fullerene formation in carbon plasma / K. L. Stepanov [et al.] // Tech. Phys. Lett. - 2003. - Vol. 29, Is. 11. - P. 927-929, DOI 10.1134/1.1631366. - Cited References: 10 . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
C-60
Аннотация: The influence of the carbon cluster charge on their coagulation kinetics has been studied. The equations of kinetics have been solved and it is established that allowance for the cluster charging leads to an increase in the rate of fullerene formation under otherwise equal conditions. In connection with this, the role of minor impurities with a low ionization potential in carbon-containing plasma is discussed. (C) 2003 MAIK "Nauka/Interperiodica".

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Держатели документа:
Natl Acad Sci Belarus, Lykov Inst Heat & Mass Transfer, Minsk, Byelarus
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk, Russia
ИФ СО РАН
Lykov Inst. of Heat/Mass Transfer, Natl. Academy of Sciences of Belarus, Minsk, Belarus
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Stepanov, K. L.; Stankevich, Y. A.; Stanchits, L. K.; Churilov, G. N.; Чурилов, Григорий Николаевич; Fedorov, A. S.; Федоров, Александр Семенович; Novikov, P. V.
}
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Solid-phase reactions and the order-disorder phase transition in thin films / V. G. Myagkov [et al.] // Tech. Phys. - 2001. - Vol. 46, Is. 6. - P. 743-748, DOI 10.1134/1.1379645. - Cited References: 28 . - ISSN 1063-7842

РУБ Physics, Applied
Рубрики:
HIGH-TEMPERATURE SYNTHESIS
   ALLOY-FILMS
   KINETICS
   MULTILAYERS
   SYSTEMS
   GROWTH
Аннотация: A comparative analysis was carried out of the initiation temperatures of solid-phase reactions in bilayer solid films and the Kurnakov temperatures of the phases forming in the reaction products. It has been shown that in superstructures where ordering is usually observed, the Kurnakov temperature coincides with the initiation temperature of the solid-phase reactions if no other solid-phase structural transformation precedes the order-disorder phase transition in the state diagram. A rule was proposed by which pairs of films capable of entering into solid-phase reactions and their initiation temperatures can be determined. (C) 2001 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirenskii Inst. of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Myagkov, V. G.; Мягков, Виктор Григорьевич; Bykova, L. E.; Быкова, Людмила Евгеньевна; Bondarenko, G. N.; Бондаренко, Галина Николаевна; Bondarenko, G. V.; Бондаренко, Геннадий Васильевич; Myagkov, F. V.
}
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Gluck, M.
A quantum cable car for Wannier-Stark ladders / M. . Gluck, A. R. Kolovsky, H. J. Korsch // Phys. Lett. A. - 2000. - Vol. 276, Is. 1-4. - P. 167-174, DOI 10.1016/S0375-9601(00)00656-3. - Cited References: 13 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary
Рубрики:
DYNAMIC LOCALIZATION
   BLOCH PARTICLE
   AC FIELDS
   DC
   STATES
   STATISTICS
   LIFETIME
Кл.слова (ненормированные):
Wannier-Stark ladder -- induced transitions -- Induced transitions -- Wannier-Stark ladder -- article -- energy -- oscillation -- quantum mechanics -- time -- transport kinetics
Аннотация: This Letter studies the dynamics of transitions between the levels of a Wannier-Stark ladder induced by a resonant periodic driving. The analysis of the problem is done in terms of resonance quasienergy states, which take into account the metastable character of the Wannier-Stark states. It is shown that the periodic driving creates from a localized Wannier-Stark state an extended Bloch-like state with a spatial length varying in time as similar to t(1/2). Such a state can find applications in the field of atomic optics because it generates a coherent pulsed atomic beam. (C) 2000 Elsevier Science B.V. All rights reserved.

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Держатели документа:
Univ Kaiserslautern, Fachbereich Phys, D-67653 Kaiserslautern, Germany
LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Fachbereich Physik, Universitat Kaiserslautern, D-67653 Kaiserslautern, Germany
L.V. Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Kolovsky, A. R.; Коловский, Андрей Радиевич; Korsch, H. J.
}
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10.

KINETICS OF METAL-INSULATOR PHASE-TRANSITION IN VO2-N FILMS / E. V. BABKIN [et al.] // Solid State Commun. - 1988. - Vol. 65, Is. 4. - P. 241-243, DOI 10.1016/0038-1098(88)90778-8. - Cited References: 6 . - ISSN 0038-1098

РУБ Physics, Condensed Matter

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Scopus
Держатели документа:
L.V. Kirenskii Institute of Physics, Academy of Sciences, the USSR, Krasnoyarsk, 660036, Russian Federation
ИФ СО РАН
Доп.точки доступа:
BABKIN, E. V.; CHARYEV, A. A.; DROBOTENKO, V. V.; VYSHINSKAYA, L. I.
}
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11.

Phase transformations in Mn/Fe(001) films: Structural and magnetic investigations / V. S. Zhigalov [et al.] // JETP Letters. - 2009. - Vol. 89, Is. 12. - P. 621-625, DOI 10.1134/S0021364009120066. - Cited References: 36. - This work was supported by the Russian Foundation for Basic Research (project no. 07-03-00190) and by the Ministry of Education and Science of the Russian Federation (project no. 2.1.1/4399, program " Development of the Scientific Potentiality of Higher Education" in 2009- 2010). . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
HIGH-TEMPERATURE SYNTHESIS
   SOLID-STATE SYNTHESIS
   FE-MN
   THIN-FILMS
   MARTENSITIC TRANSFORMATIONS
   KINETICS
   ALLOY
Аннотация: The solid-phase synthesis in epitaxial Mn/Fe(001) bilayer film systems with 24 at % of Mn has been shown to start at a temperature of 220A degrees C with the formation of a gamma-austenite lattice and the Mn and Fe films react completely under annealing to 600A degrees C. In the sample cooling process after annealing below 220A degrees C, the gamma austenite undergoes a martensitic transformation to an oriented a(100) martensite. When the annealing temperature is increased above 600A degrees C, Mn atoms migrate from the gamma-lattice, which becomes unstable, and the film is partially again transformed to the epitaxial Fe(001) layer. The solid-phase synthesis in Mn/Fe(001) bilayer nanofilms and multilayers is assumingly determined by the inverse epsilon - gamma martensitic transformation in the Mn-Fe system. The existence of a new low-temperature (similar to 220A degrees C) structure transition in the Mn-Fe system with a high iron content is assumed.

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Держатели документа:
[Zhigalov, V. S.
Matsynin, A. A.] Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660036, Russia
[Myagkov, V. G.
Bayukov, O. A.
Bykova, L. E.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Bondarenko, G. N.] Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
ИХХТ СО РАН
Reshetnev Siberian State Aerospace University, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Zhigalov, V. S.; Жигалов, Виктор Степанович; Myagkov, V. G.; Мягков, Виктор Григорьевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Bykova, L. E.; Быкова, Людмила Евгеньевна; Bondarenko, G. N.; Бондаренко, Галина Николаевна; Matsynin, A. A.; Мацынин, Алексей Александрович; Russian Foundation for Basic Research [07-03-00190]; Ministry of Education and Science of the Russian Federation [2.1.1/4399]
}
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12.

PATRIN, G. S.
PHOTOMAGNETIC EFFECT KINETICS IN ALPHA-FE2O3 - GA CRYSTALS / G. S. PATRIN, N. V. VOLKOV, G. A. PETRAKOVSKII // Fiz. Tverd. Tela. - 1994. - Vol. 36, Is. 5. - P. 1385-1391. - Cited References: 10 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

WOS
Доп.точки доступа:
VOLKOV, N. V.; PETRAKOVSKII, G. A.
}
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13.

Barinov, G. I.
Influence of high-pressure thermal-treatment on the phase compound and phase-transformation kinetics of a system magnetite-wustite / G. I. Barinov, Y. V. Babkin // Izvestiya vysshikh uchebnykh zavedenii Fizika. - 1990. - Vol. 33, Is. 5. - P. 95-96 ; Russian Physics Journal ; Известия высших учебных заведений. Физика. - Cited References: 4 . - ISSN 0021-3411

РУБ Physics, Multidisciplinary

WOS
Доп.точки доступа:
Babkin, Y. V.

}
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14.

Synthesis and catalytic hydrogenation activity of Pd and bimetallic Au–Pd nanoparticles supported on high-porosity carbon materials / O. V. Belousov [et al.] // React. Kinet. Mech. Catal. - 2019. - Vol. 127, Is. 1. - P. 25–39, DOI 10.1007/s11144-018-1430-0. - Cited References: 57 . - ISSN 1878-5190
Кл.слова (ненормированные):
MOCVD -- Hydrothermal synthesis -- Palladium nanoparticles -- Mesostructured carbon -- Bimetallic Pd–Au catalyst -- Furfural diethyl acetal -- Hydrogenation
Аннотация: The processes of palladium deposition on various high-porosity carbon matrices (Sibunit, CMK-3) have been studied. Mesostructured carbon material CMK-3 was synthesized using a silicate template of SBA-15 type. Pd nanoparticles were loaded onto carbon matrices by metalorganic chemical vapour deposition (MOCVD) method using palladium(II) acetylacetonate precursor. Bimetal Au–Pd systems were synthesized by autoclave reduction of gold(III) chloride complexes on Pd-containing carbon matrices. Structure of the obtained composite particles was studied by electron microscopy and X-ray diffraction. The average diameter of Pd particles on Sibunit is about 10, and 5–6 nm on CMK-3. The catalytic activity of the synthesized materials was studied in the reaction of furfural diethyl acetal (FDEA) hydrogenation, using gas–liquid chromatographic analysis. There is significant difference in catalytic activity of MOCVD-Pd/C compared to conventional impregnated Pd/C systems: the hydrogenation rate is 3–6 times higher with MOCVD-derived catalysts. Introducing Au into a MOCVD-Pd/C catalyst increases the hydrogenation rate threefold. Considerable difference in the composition of hydrogenation products was observed between these differently prepared catalysts.

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Держатели документа:
Institute of Chemistry and Chemical Technology of the Siberian Branch of the Russian Academy of Sciences - A Separate Division of FSC KSC SB RAS, 50/24, Akademgorodok, Krasnoyarsk, Russian Federation
Boreskov Institute of Catalysis, 5, Lavrentieva, Novosibirsk, Russian Federation
Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of Sciences - A Separate Division of FSC KSC SB RAS, 50/38, Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Belousov, O. V.; Tarabanko, V. E.; Borisov, R. V.; Simakova, I. L.; Zhyzhaev, A. M.; Tarabanko, N.; Isakova, V. G.; Исакова, Виктория Гавриловна; Parfenov, V. V.; Ponomarenko, I. V.
}
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15.

Temperature dependent elastic repulsion of colloidal nanoparticles with a polymer adsorption layer / A. P. Gavrilyuk [et al.] // Colloid Polym. Sci. - 2018. - Vol. 296, Is. 10. - P. 1689-1697, DOI 10.1007/s00396-018-4383-y. - Cited References: 49. - The reported research was funded by the Russian Foundation for Basic Research, the government of the Krasnoyarsk territory and Krasnoyarsk Regional Fund of Science, grant 18-42-243023, the RF Ministry of Science and Education, the State contract with Siberian Federal University for scientific research in 2017-2019, and SB RAS Program No II.2P (0358-2015-0010). . - ISSN 0303-402X. - ISSN 1435-1536

РУБ Chemistry, Physical + Polymer Science
Рубрики:
STERICALLY-STABILIZED PARTICLES
DEPLETION FLOCCULATION
AGGREGATION
Кл.слова (ненормированные):
Nanoparticle -- Adsorption layer -- Elastic deformation -- Coagulation -- kinetics -- Elasticity modulus
Аннотация: The model of pairwise elastic repulsion of contacting colloidal nanoparticles with a rigid core and deformable shell is discussed. A simple analytical equation is applied for the energy of elastic repulsion of nanoparticles with arbitrary sizes and the elasticity moduli of self-healing polymer adsorption layers. The model is based on the representation of the absorption layer as a continuous medium that is elastically deformed upon the contact of nanoparticles. The major characteristic of this medium is the elasticity modulus. The magnitude of the elasticity modulus is determined from the condition of balance of the van der Waals attractive forces of nanoparticles and the elastic repulsion of their adsorption layers in the contact area, taking into account the temperature variations. We employed the kinetic approach to describe the dependence of the elasticity modulus on both the temperature and the rate of its change.

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Держатели документа:
RAS, SB, Inst Computat Modeling, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Math & Comp Sci, Krasnoyarsk 660041, Russia.
Siberian Fed Univ, Lab Nanotechnol Spect & Quantum Chem, Krasnoyarsk 660041, Russia.
RAS, SB, Fed Res Ctr KSC, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Gavrilyuk, A. P.; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Ershov, A. E.; Ершов, Александр Евгеньевич; Karpov, S. V.; Карпов, Сергей Васильевич; Russian Foundation for Basic Research; government of the Krasnoyarsk territory and Krasnoyarsk Regional Fund of Science [18-42-243023]; RF Ministry of Science and Education,; State contract with Siberian Federal University for scientific research in 2017-2019; SB RAS Program [II.2P (0358-2015-0010)]
}
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16.

Physical principles of the formation of a nanoparticle electric double layer in metal hydrosols / A. P. Gavrilyuk [et al.] // Colloid Polym. Sci. - 2020. - Vol. 298, Is. 1. - P. 1-7, DOI 10.1007/s00396-019-04573-8. - Cited References: 25. - The reported research was funded by the Russian Foundation for Basic Research and the government of the Krasnoyarsk territory, Krasnoyarsk Regional Fund of Science, grant No 18-42-243023, the RF Ministry of Education and Science, the State contract with Siberian Federal University for scientific research in 2017–2019. . - ISSN 0303-402X. - ISSN 1435-1536
Кл.слова (ненормированные):
Nanoparticle -- Adsorption layer -- Elastic deformation -- Coagulation kinetics -- Elasticity modulus
Аннотация: The Brownian dynamics method is employed to study the formation of an electrical double layer (EDL) on the metal nanoparticle (NP) surface in hydrosols during adsorption of electrolyte ions from the interparticle medium. Also studied is the charge accumulation by NPs in the Stern layer. To simulate the process of the formation of EDL, we took into account the effect of image forces and specific adsorption, dissipative and random forces, and the degree of hydration of adsorbed ions on the EDL structure. The employed model makes it possible to determine the charge of NPs and the structure of EDL. For the first time, the charge of both the diffuse part of EDL and the dense Stern layer has been determined. A decrease in the electrolyte concentration (below c ˂ 0.1 mol/l) has been found to result in dramatic changes in the formation of the Stern layer.

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Держатели документа:
Institute of Computational Modeling SB RAS, Krasnoyarsk, Russia
Siberian Federal University, Krasnoyarsk, Russia
L. V. Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Siberian State University of Science and Technology, Krasnoyarsk, Russia

Доп.точки доступа:
Gavrilyuk, A. P.; Isaev, I. L.; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Karpov, S. V.; Карпов, Сергей Васильевич
}
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17.

Influence of solution acidity on growth kinetics, structure and magnetic properties of Co-P films, obtained by chemical deposition / A. V. Chzhan [et al.] // J. Phys. Conf. Ser. - 2019. - Vol. 1389, Is. 1. - Ст. 012116, DOI 10.1088/1742-6596/1389/1/012116. - Cited References: 21 . - ISSN 1742-6588. - ISSN 1742-6596
Аннотация: The results of studies of the effect of solution acidity on the growth kinetics, structure and magnetic properties of Co-P films obtained by chemical deposition are presented. It was shown that the growth of Co-P films in the low pH region occurs mainly due to the growth of crystallite sizes, and in the high pH region, due to an increase in the nucleation rate. From the analysis of the chemical equilibrium of redox reactions, taking into account the balance of citrate and hydroxyl complexes of Co, a qualitative explanation of the features of the change in the rate and nature of the deposition of Co atoms from pH is proposed.

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Держатели документа:
Siberian Federal University, 660041 Krasnoyarsk, avenue Svobodny 79, Russian Federation
Krasnoyarsk State Agrarian University, 660049 Krasnoyarsk, avenue Mira 90, Russian Federation
Kirensky Institute of Physics FIC KNC SB of the RAS, 660036 Krasnoyarsk, Akademgorodok 50, building number 38, Russian Federation

Доп.точки доступа:
Chzhan, A. V.; Podorozhnyak, S. A.; Patrin, G. S.; Патрин, Геннадий Семёнович; Rudenko, R. Yu.; Руденко, Роман Юрьевич; Onufrienok, V. V.; Euro-Asian Symposium "Trends in MAGnetism"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
}
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18.

Influence of solid acidity on growth kinetics, structure and magnetic properties of CoP films during chemical deposition / A. V. Chzhan, S. A. Podorozhnyak, R. Yu. Rudenko // 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.P38. - P. 254-255. - Cited References: 3 . - ISBN 978-5-9500855-7-4

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Krasnoyarsk State Agrarian University, the Russian Federation, Krasnoyarsk
Siberian Federal University, Krasnoyarsk, Russia

Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Chzhan, A. V.; Чжан, Анатолий Владимирович; Podorozhnyak, S. A.; Rudenko, R. Yu.; Руденко, Роман Юрьевич; 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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}
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19.

Renewable P-type zeolite for superior absorption of heavy metals: Isotherms, kinetics, and mechanism / M. Chen, S. Nong, Y. Zhao [et al.] // Sci. Total Environ. - 2020. - Vol. 726. - Ст. 138535, DOI 10.1016/j.scitotenv.2020.138535. - Cited References: 47. - This work was supported by the National Key Research and Development Program of China (Grant No. 2016YFB0901600 ); National Science Foundation of China (Grant No. 21871008 ); Science and Technology Commission of Shanghai Municipality (Grant No. 14520722000 ) and China Postdoctoral Science Foundation [Grant No. 8206300161 ]. Thank Shuying Nong for her experimental assistance . - ISSN 0048-9697
Кл.слова (ненормированные):
Uptake capacity -- High efficiency -- Drinkable level -- Regeneration
Аннотация: Zeolite is a characteristic material for removing heavy metals exhibiting by low tolerance quantities. It is particularly desirable although challenging to cultivate an unmodified and reusable zeolite for eradicating heavy metals with great capacity. Herein, we sought out and firstly synthesized the uniform octahedral zeolite Na6Al6Si10O32·12H2O for heavy metal ions trap, proven extraordinarily effective decontamination of M2+ (Pb2+, Cd2+, Cu2+, and Zn2+). The maximum capacities of Pb2+, Cd2+, Cu2+, and Zn2+ were 649, 210, 90 and 88 mg/g, and the distribution coefficients (Kd) was ~108 mL/g for Pb2+ which emphasized the superior effectiveness of Na6Al6Si10O32·12H2O contrasted with other zeolites. Rapid adsorption was observed that Pb2+ concentration (7.5 ppm) was reduced to 0.6 ppb in 2 min. The removal mechanism was ascribed to the ion exchange and hydroxyl groups thereby affording high adsorption capacity. We also investigated the heavy metal removal of zeolite 13X and 4A for comparison and concluded the determining factor affecting absorption capacity. The removal rate of Pb remained at 97% even after five regeneration recycles. The zeolite was therefore promising for practical water purification and industrialization.

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Держатели документа:
Beijing National Laboratory for Molecular Sciences and State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
CAS Key Laboratory of Materials for Energy Conversion and State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China

Доп.точки доступа:
Chen, M.; Nong, S.; Zhao, Y.; Riaz, M. S.; Xiao, Y.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Huang, F.
}
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20.

    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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