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   A 26


    Агрегативная устойчивость коллоидно-дисперсной системы наночастицы CdS-H2O в присутствии поверхностно-активных веществ [] = Aggregative Stability of Colloidal Disperse System "Nanoparticles CdS-H2O" in Presence of Surfactants / Н. С. Кожевникова, Т. И. Горбунова, А. С. Ворох, Д. Н. Бажин, А. Я. Запевалов, В. И. Салоутин, А. А. Ремпель, О. Н. Чупахин // Доклады Академии наук. - 2012. - Т. 443, N 3. - С. 321-325 : табл., граф. - Библиогр.: с. 325 (14 назв.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
УСТОЙЧИВОСТЬ АГРЕГАТИВНАЯ -- СИСТЕМА КОЛЛОИДНО-ДИСПЕРСНАЯ -- НАНОЧАСТИЦЫ -- ПОВЕРХНОСТНО-АКТИВНЫЕ ВЕЩЕСТВА -- СИНТЕЗ ОРГАНОМЕТАЛЛИЧЕСКИЙ -- СУЛЬФИД КАДМИЯ

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   E 58

    Enyashin, A. N.
    Atomic and Electronic Structures and Stability of Icosahedral Nanodiamonds and Onions / A. N. Enyashin, A. L. Ivanovskii // Physics of the Solid State. - 2007. - Vol. 49, № 2. - P392-397 : il. - Bibliogr. : p. 397 (25 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
КАРБОНОВЫЕ НАНОЧАСТИЦЫ -- ФУЛЛЕРЕНЫ
Аннотация: The relative stability of alternative carbon nanoparticles with icosahedral symmetry, such as diamond-like nanocrystallites and multiwalled fullerenes (onions), is investigated using the parametric model and the density functional tight-binding (DFTB) method. It is demonstrated that an increase in the size of particles and their hydrogenation favor the stabilization of diamond-like nanocrystallites. The formation of “intermediate” nanostructures consisting of diamond-like nanocrystallites inside the fullerene cage is revealed. The electronic spectra of icosahedral carbon nanoparticles are calculated

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   V 92

    Vorokh, A. S.
    Atomic structure of cadmium sulfide nanoparticles [Текст] / A. S. Vorokh, A. A. Rempel // Physics of the Solid State. - 2007. - Vol. 49, № 1. - С. 148-153. - Библиогр. : с. 153 (20 назв.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
АТОМНАЯ СТРУКТУРА -- СУЛЬФИД КАДМИЯ -- НАНОЧАСТИЦЫ
Аннотация: A method for calculating the x-ray diffraction patterns of cadmium sulfide nanoparticles with a disordered internal structure, a real surface, shape, and size is proposed within the kinematic theory of scattering. A computer analysis has revealed that the characteristic shape of the experimental x-ray diffraction patterns of cadmium sulfide films and powders is determined by a specific disordered anoparticle structure differing from the crystal structures of wurtzite and sphalerite. According to the computer simulation, cadmium sulfide nanoparticles synthesized through chemical deposition have a shape similar to a hexagonal prism with a characteristic size of approximately 5 nm.

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   S 12

    Sadovnikov, S. I.
    Chemical deposition of nanocrystalline lead sulfide powders with controllable particle size / S. I. Sadovnikov, A. I. Gusev // Journal of Alloys and Compounds. - 2014. - Vol. 586. - P105-112.

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СУЛЬФИД СВИНЦА -- НАНОКРИСТАЛЛИЧЕСКИЕ ПОРОШКИ -- ОСАЖДЕНИЕ ХИМИЧЕСКОЕ -- РАЗМЕР ЧАСТИЦ
Аннотация: For the first time the systematic study of the effect of synthesis conditions (concentrations of reactants, the presence or lack of a complexing agent and its type, the exposure time of deposited PbS particles in the matrix solution) on the size of lead sulfide nanoparticles, their phase composition and the presence of impurity phases is performed. PbS nanopowders are synthesized by deposition from aqueous solutions of lead acetate and sodium sulfide in the presence of EDTA-H2Na2 or sodium citrate. It is found that the phase composition of the deposit and the size of the nanoparticles depend on the initial concentrations of lead and sulfur ions, the presence and type of complexing agents, as well as on the quantitative ratio between the content of lead ions and complexing ions in the solution. The possibility of controllable hydrochemical deposition of PbS nanoparticles with preassigned size from 5 to 55 nm is shown.

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   V 92

    Vorokh, A. S.
    Direct Space Visualization of the Short and “Average” Long Range Orders in the Noncrystalline Structure of a Single Cadmium Sulfide Nanoparticle / A. S. Vorokh, A. A. Rempel // JETP Letters. - 2010. - Vol. 91, № 2. - P100-104 : il. - Bibliogr. : p. 104 (16 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
НАНОЧАСТИЦЫ -- СУЛЬФИД КАДМИЯ
Аннотация: A method has been proposed for identifying the noncrystalline structure of CdS nanoparticles in the direct space by interpreting an image obtained by high resolution transmission electron microscopy. The short and average long range orders and microstrains in the disordered close packed structure of the CdS nanoparticle have been visualized. It has been shown that the direct space image of the average lattice with the space group P6 appears due to the moiré effect in the noncrystalline structure

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   V 92

    Vorokh, A. S.
    Disordered structure and the shape of nanoparticles of cadmium sulfide CdS [Текст] / A. S. Vorokh, A. A. Rempel // Doklady Physics. - 2007. - Vol. 52, № 4. - С. 200-203. - Библиогр. : с. 203 (13 назв.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СУЛЬФИД КАДМИЯ -- НАНОЧАСТИЦЫ

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   R 98

    Ryzhkov, M. V.
    Electronic structure and geometry optimization of nanoparticles Fe2C, FeC2, Fe3C, FeC3 and Fe2C2 [Текст] / M. V. Ryzhkov, A. L. Ivanovskii, B. T. Delley // Chemical Physics Letters. - 2005. - Vol. 404, № 4-6. - С. 400-408

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
НАНОЧАСТИЦЫ -- КАРБИД ЖЕЛЕЗА
Аннотация: The geometry optimization of the beginning of the row of FenCm nanoparticles was carried out using the DFT based DMol3 method. For FeC2 and Fe2C the triangular configurations are found to have the lowest binding energy. The most stable planar structures for FeC3 and Fe2C2 are favored over the three-dimensional isomers, whereas for Fe3C the pyramidal configuration appeared to be the ground state. The effective charges and total spin densities on the atoms were calculated using integral and Mulliken schemes incorporated in DVM and Hirshfeld procedure of DMol3. The most reasonable values were obtained with the use of integral method

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   E 43


    Electronic Structure and Magnetic States of Crystalline and Fullerene-Like Forms of Nickel Dichloride NiCl2 / A. N. Enyashin, N. I. Medvedeva, Yu. E. Medvedeva, A. L. Ivanovskii // Physics of the Solid State. - 2005. - Vol. 47, № 3. - P527-530 : il. - Bibliogr. : p. 530 (12 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ДИХЛОРИД НИКЕЛЯ -- ФУЛЛЕРЕНЫ -- ФЕРРОМАГНЕТИКИ -- СТЕХИОМЕТРИЯ
Аннотация: The electronic structure and magnetic properties of the crystalline and fullerene-like forms of nickel dichloride NiC² are investigated in the framework of the local spin density functional theory. It is demonstrated that the band gap can be reproduced in the energy band spectrum of the NiCl² compound with inclusion of the magnetic ordering in the calculation of the band structure. The metamagnetic nature of the NiCl² dichloride (i.e., the transition from an antiferromagnetic phase to a ferromagnetic phase in a weak magnetic field) is explained in terms of a small difference (0.025 eV/cell) between the total energies of the ferromagnetic and antiferromagnetic phases. Polyhedral three-shell nanoparticles of the NiCl² compound exhibit magnetic properties (the magnetic moment of nickel lies in the range 2.0–2.3 µβ). For isostructural nanoparticles of the FeCl² dichloride, the magnetic moment of iron is larger and falls in the range 4.2–4.5 µβ, whereas nanoparticles of the CdCl² dichloride are found to be nonmagnetic. The results of analyzing the interatomic interactions indicate that the composition of fullerene-like nanoparticles of the dichlorides under investigation can deviate from the 1 : 2 stoichiometric composition

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   E 43


    Electronic structure, chemical bonding, and properties of binary carbides MxMy ′ Cz in the Crystalline and molecular states: XES, XPS, and quantum-chemical studies / V. M. Cherkashenko, S. Z. Nazarova, A. I. Gusev, A. L. Ivanovskii // Journal of Structural Chemistry. - 2001. - Vol. 42, № 6. - P1002-1024 : il. - Bibliogr. : p. 1021-1024 (103 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
КАРБИДЫ БИНАРНЫЕ -- КВАНТОВО-ХИМИЧЕСКИЕ ИССЛЕДОВАНИЯ
Аннотация: This paper reviews the results of electronic structure studies and investigations of the nature of chemical bonding and properties of binary d-metal carbides in the crystalline and molecular states. X-ray emission and X-ray photoelectron spectroscopy as well as quantum-chemical data are analyzed, and variations of the electronic properties and interatomic interactions are discussed for carbides of high-melting metals doped on the metal sublattice and a series of their reciprocal solid solutions: NbC–TaC, TiC–VC0.87, TiC–NbC, and NbC–MoC0.67 over a wide range of compositions. Prospects are discussed for application of quantum-chemical methods to structure and property modeling and forecasting for a new class of molecular clusters — binary metallocarbohedrenes M8−nMn ′C12 and related metal–carbon nanoparticles of “mixed” composition

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10.

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   V 92

    Vorokh, A. S.
    Geometry of lead sulfide nanoparticles with a nacl-type structure / A. S. Vorokh, S. Z. Nazarova, N. S. Kozhevnikova // Mendeleev Communications. - 2014. - Vol. 24, № 1. - P55-57.

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
НАНОЧАСТИЦЫ -- ДИФРАКЦИЯ РЕНТГЕНОВСКАЯ
Аннотация: The analysis of X-ray diffraction patterns showed that the geometry of PbS nanoparticles with a structure of NaCl is a nonlinear function of particle size for PbS particles smaller than 82 nm

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11.

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   I-65


    Inorganic Nanotubes and Fullerene-Like Structures (IF) / R. Tenne, M. Remiskar, A. N. Enyashin, G. Seifert // Topics in Applied Physics. - 2008. - Vol. 111. - P631-671 : il. - Bibliogr. : p. 660-669 (162 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
НЕОРГАНИЧЕСКИЕ НАНОТРУБКИ -- ФУЛЛЕРЕНОПОДОБНАЯ СТРУКТУРА
Аннотация: Back in 1992 it was proposed that nanoparticles of layered compounds will be unstable against folding and will close up into fullerene-like structures (IF) and nanotubes. In the years that followed nanotubes and fullerene-like structures were synthesized from numerous compounds with layered structure. More recently, crystalline and noncrystalline nanotubes of compounds with a 3D, i.e., quasi-isotropic lattice have been intensively investigated. In view of their eminent applications potential, much effort and substantial progress has been achieved in the scaling-up of the synthesis of inorganic nanotubes and fullerene-like nanoparticles of WS2 and MoS2 and also other compounds. Early on it was suggested that hollow nano-octahedra consisting of a few hundred MoS2 moieties make the true analogs of C60, etc. This notion has been advanced considerably in recent years through a combined experimental–theoretical effort. tribological applications and lately for impact resilient nanocomposites. These tests indicated that IF-MoS2 and IF-WS2 are heading for large-scale applications in the automotive, machining, aerospace, electronics, defense, medical and numerous other kinds of industries. A few products based on these nanoparticles have been recently commercialized by “ApNano Materials, Inc” (“NanoMaterials, Ltd.”, see also www.apnano.com). Most recently, a manufacturing facility for the commercialization of these nanomaterials has been erected and sales of the product started. Novel applications of inorganic nanotubes and fullerene-like nanoparticles in the fields of catalysis; microelectronics; Li rechargeable batteries; medical and optoelectronics will be discussed

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12.

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   I-69


    Interaction of copper nanoparticles with liposomes [Текст] / G. Yu. Ostaeva, A. A. Yaroslavov, E. D. Selishcheva, D. A. Davydov, I. M. Papisov // Vysokomolekulyarnye Soedineniya, Seriya A i Seriya B. - 2008. - Vol. 50, № 6. - С. 1098-1101

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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13.

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   R 42

    Rempel, A. A.
    Intrinsic and extrinsic defects in palladium and copper after severe plastic deformation [Text] / A. A. Rempel, S. Z. Nazarova, A. I. Gusev // Структура и свойства нанокристаллических материалов: [Сб. науч. тр.]. - 1999. - P265-278. - Библиогр.: 15 назв.

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ДЕФЕКТЫ ВНУТРЕННИЕ -- ВНУТРЕННИЕ ДЕФЕКТЫ -- ДЕФЕКТЫ НАРУЖНЫЕ -- НАРУЖНЫЕ ДЕФЕКТЫ -- Pd -- Cu -- ДЕФОРМАЦИИ ПЛАСТИЧЕСКИЕ -- ПЛАСТИЧЕСКИЕ ДЕФОРМАЦИИ -- Fe -- ПАЛЛАДИЙ -- МЕДЬ -- ВОСПРИИМЧИВОСТЬ МАГНИТНАЯ -- МАГНИТНАЯ ВОСПРИИМЧИВОСТЬ -- МИКРОСТРУКТУРА -- НАНОЧАСТИЦЫ -- ЖЕЛЕЗО
Аннотация: In this work intrinsic defects (atomic vacancies) in palladium and extrinsic defects (impurity phase) in copper were investigated. Intrinsic defects which are interpreted as atomic vacancies and divacancies distributed in grains were found in submicrocrystalline (SMC) Pd. Intrinsic defects in SMC-Pd lead to the essential excess (8%) of the magnetic susceptibility over that of the initial polycrystalline palladium. It is shown that the effect of microstructure on the susceptibility of plastically deformed palladium may be a consequence of the change in the density of states on the Fermi level. Intrinsic defects which are interpreted as superparamagnetic iron nanoparticles with a size of a few nanometers were found in SMC-Cu. Nanoparticles of Fe in diamagnetic matrix lead to increase of magnetic susceptibility of SMC-Cu. This increase is shown to be due to the Fe nanoparticles increasing in size from 2.8 to 3.3 nm.

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14.

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   R 42

    Rempel, A. A.
    Iron nanoparticles in severe-plastic-deformed copper / A. A. Rempel, S. Z. Nazarova, A. I. Gusev // Journal of Nanoparticle Research. - 1999. - Vol. 1. - P485-490 : il. - Bibliogr. : p. 490

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Superparamagnetic iron nanoparticles with a size of a few nanometers were produced in copper by severe plastic deformation. In a isochronal annealing experiment near a temperature of 450 K, which corresponds to the temperature of structural relaxation and the first step of grain growth (from 128 to 150 nm) of submicrocrystalline copper, an abrupt increase in the magnetic susceptibility is detected. This increase is shown to be due to iron nanoparticles increasing in size from 2.8 to 3.3 nm. The vanishing of the ferromagnetic contribution by iron nanoparticles observed at 850 K, well below the Curie temperature of iron, is due to the dissolution of nanoparticles in plastically deformed copper

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15.

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   M 78


    Modeling of the Structure and Electronic Structure of Condensed Phases of Small Fullerenes C28 and Zn@C28 / A. N. Enyashin, V. V. Ivanovskaya, Yu. N. Makurin, A. L. Ivanovskii // Physics of the Solid State. - 2004. - Vol. 46, № 8. - P1569-1573 : il. - Bibliogr. : p. 1572-1573 (23 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
КОНДЕНСИРОВАННЫЕ ФАЗЫ -- ФУЛЛЕРЕНЫ
Аннотация: A comparative analysis of the stability factors and electronic structure of two possible crystalline forms of small fullerene C28 and endohedral fullerene Zn@C28 with diamond and lonsdaleite structures is performed using a cluster model. Atoms of elements that, when placed inside C28 cages, have no significant effect on the stability of free small-fullerene molecules are shown to be able to dramatically change the electronic properties and reactivity of the C28 skeleton and to be favorable for forming small-fullerene crystalline modifications, which are covalent crystals. In contrast, if the presence of foreign atoms inside C28 cages stabilizes the isolated nanoparticles, then molecular crystals (such as C60 fullerites) are formed due to weak van der Waals forces

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16.

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   M 88


    Mössbauer Spectroscopy Study of the EuO:Fe Spintronic Material / A. S. Borukhovich, N. I. Ignat’eva, K. I. Yanushkevich, A. I. Stognij, Yu. A. Fedotova // JETP Letters. - 2009. - Vol. 89, № 4. - P191-193 : il. - Bibliogr. : p. 193 (8 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МЕССБАУЭРОВСКАЯ СПЕКТРОСКОПИЯ -- ОКСИД ЕВРОПИЯ
Аннотация: The states of iron and europium in the EuO:Fe composite spintronic material have been studied by means of room-temperature Mössbauer spectroscopy. In both cases, two sets of lines indicating the ferromagnetism and superparamagnetism of metallic iron nanoparticles in the composite and the appearance of a fraction of europium ions in the Eu3+ oxidation state in the matrix in addition to the main Eu2+ state have been observed in the respective spectra. In the europium case, the observation implies the possibility of a partial spin polarization of paramagnetic europium ions in Eu–Fe–O clusters and an increased specific magnetization of the composite

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17.

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   P 29


    Particle-size hierarchy in zirconium hydroxide deposits on inert supports [Text] / G. P. Shveikin, A. P. Shtin, E. V. Polyakov, T. A. Denisova, Ya. N. Blinovskov, I. G. Grigorov, A. N. Khlebnikov // Inorganic Materials. - 2005. - Vol. 41, № 5. - P. 476-482 : il. - Библиогр. : с. 482 (22 назв.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ГИДРОКСИД ЦИРКОНИЯ -- НАНОЧАСТИЦЫ -- ГИДРОКСИД ТИТАНА
Аннотация: Experimental data are presented on the structure, composition, size, and proton configuration of zirconium hydroxide particles prepared by precipitation from sulfate solutions with and without inert supports (acetylene black). It is shown that growing zirconium hydroxide particles have an hierarchical structure with a constant ratio of the average particle sizes between two consecutive levels of the hierarchy. This feature is common to titanium and zirconium hydroxide nanoparticles, which, however, differ in reactivity

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18.

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   B 41

    Belova, N. S.
    PbS Nanoparticles: Synthesis and Size Determination by X-ray Diffraction / N. S. Belova, A. A. Rempel // Inorganic Materials. - 2004. - Vol. 40, № 1. - P. 3-10 : il. - Bibliogr. : p. 9-10 (31 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СУЛЬФИД СВИНЦА -- НАНОЧАСТИЦЫ -- ДИФРАКЦИЯ РЕНТГЕНОВСКАЯ
Аннотация: PbS particles down to 60 nm in size are prepared by chemical precipitation from aqueous solutions. An x-ray diffraction procedure is described for determining the particle size and atomic structure. The PbS particles precipitating in the solution bulk are shown to be monocrystalline. Reducing the particle size of PbS from 300 to 60 nm increases the rms atomic displacements (by 30%) and lattice strain (by 0.1%) in the particles. The lattice parameter of PbS is found for the first time to increase with decreasing particle size

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19.

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   P 56


    Phase Composition and Some Properties of Titanium Carbonitride–Titanium Nickelide Alloys with Al2O3 Nanoparticles / A. E. Ermakov, I. V. MIsharina, I. G. Grigorov, V. G. Pushin, Yu. G. Zainulin // Russian Metallurgy (Metally). - 2009. - № 1. - P77-81 : il. - Bibliogr. : p. 81 (10 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
КАРБОНИТРИД ТИТАНА -- НИКЕЛИД ТИТАНА -- СПЛАВЫ
Аннотация: The phase formation in and the microstructure of titanium carbonitride–titanium nickelide alloys with aluminum oxide Al2O3 nanopowder additions are studied by X-ray diffraction, electron-microscopic, and electron-probe microanalyses. The phase interaction is characterized by the redistribution of nonmetallic elements and aluminum between refractory and binding phases with the formation of a nonstoichiometric titanium–aluminum (Ti,Al)(C,N) carbonitride and a titanium–aluminum nickelide. The number of forming phases and their compositions are controlled by the kinetic parameters of the process

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20.

Инвентарный номер: нет.

   K 80

    Kozhevnikova, N. S.
    Preparation of Stable Colloidal Solution of Cadmium Sulfide CdS Using Ethylenediaminetetraacetic Acid / N. S. Kozhevnikova, A. S. Vorokh, A. A. Rempel // Russian Journal of General Chemistry. - 2010. - Vol. 80, № 3. - P391-394 : il. - Bibliogr. : p. 394 (19 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
КОЛЛОИДНЫЕ РАСТВОРЫ -- СУЛЬФИД КАДМИЯ -- ОРГАНИЧЕСКАЯ ХИМИЯ
Аннотация: By the method of chemical condensation a stable aqueous colloidal solution of nanoparticles of cadmium sulfide was obtained. The solution obtained in the daylight had a bright lemon-yellow color. For the temporary stabilization of the solution was used an organic complexone, disodium ethylenediaminetetraacetate (EDTA), that prevented coagulation of colloidal particles up to several months at 4°C. At room temperature, the solution remained stable during a month. The structure and properties of the disperse phase were studied by the X-ray diffraction, optical fluorescence, and electron microscopy. The solid particles size is about 3 nm, they have a disordered close-packed structure with the space group P6mm and possess the photoluminescence color from green to orange depending on the duration of keeping the solution. The size of coagulates was 10 nm, 100 nm, and 1 μm after keeping for 1, 2, and 4 months, respectively

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