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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lin, Chun-Rong, Ivanova O. S., Edelman I. S., Knyazev Yu. V., Zharkov S. M., Petrov D. A., Sokolov A. Е., Svetlitsky E. S., Velikanov D. A., Solovyov, Leonid A., Chen, Ying-Zhen, Tseng, Yaw-Teng
Заглавие : Carbon double coated Fe3O4@C@C nanoparticles: Morphology features, magnetic properties, dye adsorption
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-52-52002]; Ministry of Science and Technology of TaiwanMinistry of Science and Technology, Taiwan [108-2923-M-153-001-MY3, 109-2112-M-153-003]; Joint Scientific Center of the Siberian Federal University [FSRZ-2020-0011]; Ministry of Science and Higher Education of the Russian Federation
Место публикации : Nanomaterials. - 2022. - Vol. 12, Is. 3. - Ст.376. - ISSN 2079-4991(eISSN), DOI 10.3390/nano12030376
Примечания : Cited References: 44. - The work was supported financially by the Russian Foundation for Basic Research, Grant No. 19-52-52002 and Ministry of Science and Technology of Taiwan, Grants MOST No. 108-2923-M-153-001-MY3 and No. 109-2112-M-153-003-. The support was obtained also from the Joint Scientific Center of the Siberian Federal University supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation, where the Transmission Electron Microscopy studies were carried out
Предметные рубрики: SOLID-PHASE EXTRACTION
FE3O4 NANOPARTICLES
PROFILE REFINEMENT
Аннотация: This work is devoted to the study of magnetic Fe3O4 nanoparticles doubly coated with carbon. First, Fe3O4@C nanoparticles were synthesized by thermal decomposition. Then these synthesized nanoparticles, 20–30 nm in size were processed in a solution of glucose at 200 °C during 12 h, which led to an unexpected phenomenon – the nanoparticles self-assembled into large conglomerates of a regular shape of about 300 nm in size. The morphology and features of the magnetic properties of the obtained hybrid nanoparticles were characterized by transmission electron microscopy, differential thermo-gravimetric analysis, vibrating sample magnetometer, magnetic circular dichroism and Mössbauer spectroscopy. It was shown that the magnetic core of Fe3O4@C nanoparticles was nano-crystalline, corresponding to the Fe3O4 phase. The Fe3O4@C@C nanoparticles presumably contain Fe3O4 phase (80%) with admixture of maghemite (20%), the thickness of the carbon shell in the first case was of about 2–4 nm. The formation of very large nanoparticle conglomerates with a linear size up to 300 nm and of the same regular shape is a remarkable peculiarity of the Fe3O4@C@C nanoparticles. Adsorption of organic dyes from water by the studied nanoparticles was also studied. The best candidates for the removal of dyes were Fe3O4@C@C nanoparticles. The kinetic data showed that the adsorption processes were associated with the pseudo-second order mechanism for cationic dye methylene blue (MB) and anionic dye Congo red (CR). The equilibrium data were more consistent with the Langmuir isotherm and were perfectly described by the Langmuir–Freundlich model.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Elesina V. I., Churilov G. N., Vnukova N. G., Nikolaev N. S., Glushenko G. A., Isakova V. G.
Заглавие : Mechanical activation of fullerene containing soot during extraction of higher and endohedral metallofullerenes
Место публикации : Fuller. Nanotub. Carbon Nanostruct. - 2022. - Vol. 30, Is. 5. - P.553-558. - ISSN 1536383X (ISSN), DOI 10.1080/1536383X.2021.1966421
Примечания : Cited References: 33
Аннотация: For extraction of higher fullerenes and endohedral metallofullerenes (EMF) with yttrium from fullerene-containing carbon soot (soot) obtained by combined spraying of graphite and yttrium oxide powders in an arc plasma, we developed a device (Extractor*) that provides mechanical activation effects on agents combined with filtration. It has been shown that the soot recovery percentage of a mixture of higher fullerenes and EMF with different solvents (carbon disulfide, o-xylene, pyridine) and the EMF mass fraction in the mixture is significantly higher than in the extraction with a Soxhlet apparatus traditionally used for these purposes. The time spent on the extraction process is reduced significantly. Due to a known reaction with titanium chloride (TiCl4) and removal of a solution of empty fullerenes, subsequent bonding of EMF with yttrium into an insoluble complex directly in the extractor allows the product to be significantly enriched with EMF. In general, we were able to significantly reduce both the duration of extraction of the fullerenes mixture and EMF and the production of EMF separately.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Komogortsev S. V., Gorbenko A. S., Knyazev Yu. V., Yaroslavtsev R. N., Olkhovskiy I. A., Neznakhin D. S., Tyumentseva A. V., Bayukov O. A., Iskhakov R. S.
Заглавие : Maghemite nanoparticles for DNA extraction: Performance and blocking temperature
Место публикации : J. Supercond. Novel Magn. - 2022. - Vol. 35, Is. 7. - P.1929-1936. - ISSN 15571939 (ISSN), DOI 10.1007/s10948-022-06233-5
Примечания : Cited References: 33. - This work was supported by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund, with research projects no. 20–42-242902. We are grateful to the Center of Collective Use of FRC KSC SB RAS for the provided equipment
Аннотация: Iron oxide nanoparticles coated with polyethylene glycol were synthesized by coprecipitation for use in the magnetic separation of DNA (deoxyribonucleic acid). The blocking temperature of nanoparticles was studied by the methods of Mossbauer spectroscopy, ferromagnetic resonance, and using magnetometric measurements. The blocking temperature calculated from the temperature dependence of the coercive force was ~ 200 K. The calculation of the blocking temperature from the relaxation time obtained using Mossbauer spectroscopy gave a value of ~ 450 K. The blocking temperature obtained using ferromagnetic resonance was ~ 910 K. The relationship between the obtained blocking temperatures is in good agreement with the Neel-Brown formula. The constants of effective and surface anisotropy were determined by the method of ferromagnetic resonance. Isolation of DNA from blood using prepared particles and separation in a permanent magnet field revealed sufficient productivity, high speed, and the “chemical delicacy” of this approach.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Elesina V. I., Vnukova N. G., Churilov G. N.
Заглавие : Method for the extraction of EMF in a mechanical extractor
Коллективы : "Advanced carbon nanostructures", International conference, Физико-технический институт им. А.Ф. Иоффе РАН, Национальный исследовательский центр "Курчатовский институт", Санкт-Петербургский государственный технологический институт (технический университет), Санкт-Петербургский национальный исследовательский Академический университет имени Ж.И. Алфёрова Российской академии наук
Место публикации : 15th International Conference "Advanced carbon nanostructures": book of abstracts. - 2021. - Fullerenes. - Ст.O4-4-04. - P.189. - ISBN 978-5-93634-069-7
Примечания : Cited References: 1. - The reported study was funded by RFBR according to the research project № 18-29-19003
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Elesina V. I., Churilov G. N., Vnukova N. G.
Заглавие : The method for efficient extraction of fullerenes and enrichment of EMF in an extractor
Коллективы : "Functional materials", International conference, Крымский федеральный университет имени В.И. Вернадского
Место публикации : Ovchinnikov S. G. International conference "Functional materials": book of abstracts/ ed. V. N. Berzhansky ; org. com. S. G. Ovchinnikov [et al.]. - Simferopol, 2021. - P.228-229
Примечания : Библиогр.: 5. - Study was funded by RFBR according to the research project № 18-29-19003
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belousov A. L., Patrusheva T. N., Karacharov A. A., Ivanenko A. A., Kirik S. D., Khol'kin A. I.
Заглавие : Amorphous and Crystalline Nickel Oxide Films Obtained by the Extraction-Pyrolysis Method for Electrochromic Cells
Коллективы : program "Research and Development for the Priority Areas of the Russian Science-and-Technology Sector for 2014-2020" [075-15-2019-1843]; [RFMEFI60719X0307]
Место публикации : Theor. Found. Chem. Eng. - 2020. - Vol. 54, Is. 4. - P.699-705. - ISSN 0040-5795, DOI 10.1134/S0040579520040041. - ISSN 1608-3431(eISSN)
Примечания : Cited References: 8. - This work was performed as part of the program "Research and Development for the Priority Areas of the Russian Science-and-Technology Sector for 2014-2020"; Grant Agreement no. 075-15-2019-1843; the Project Unique Identifier RFMEFI60719X0307
Предметные рубрики: NIO THIN-FILMS
Аннотация: This paper reports studies of thin films of nickel oxide obtained by the extraction–pyrolysis method on glass and quartz substrates at temperatures of 380–600°C. The films have been characterized by atomic force microscopy and X-ray diffraction. It is shown that amorphous and crystalline nickel oxide films are formed on the glass. The grain size depends on the annealing temperature, while increased annealing temperatures lead to recrystallization and a decrease in the grain size in NiO films from 130 to 35 nm.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Komina A. V., Yaroslavtsev R. N., Gerasimova Yu. V., Stolyar S. V., Olkhovsky I. A., Bairmani M. S.
Заглавие : Magnetic Nanoparticles for Extracting DNA from Blood Cells
Место публикации : Bull. Russ. Acad. Sci. Phys. - 2020. - Vol. 84, Is. 11. - P.1362-1365. - ISSN 10628738 (ISSN), DOI 10.3103/S1062873820110155
Примечания : Cited References: 15
Аннотация: A technique for extracting DNA from blood cells using magnetic particles offers the advantage of saving time and prospects of automating the extraction process. A way of obtaining magnetic iron nanoparticles for extracting DNA from blood cells is developed. Magnetic nanoparticles with characteristics suitable for extracting genomic DNA from leukocytes are obtained and investigated.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tambasov I. A., Voronin A. S., Evsevskaya N. P., Volochaev M. N., Fadeev Y. V., Simunin M. M., Aleksandrovsky A. S., Smolyarova T. Е., Abelian S. R., Tambasova E. V., Gornakov M. O., Eremina V. A., Kuznetsov Y. M., Dorokhin M. V., Obraztsova E. D.
Заглавие : Thermoelectric properties of low-cost transparent single wall carbon nanotube thin films obtained by vacuum filtration
Место публикации : Physica E. - 2019. - Vol. 114. - Ст.113619. - ISSN 13869477 (ISSN), DOI 10.1016/j.physe.2019.113619
Примечания : Cited References: 53. - The study was carried out by a grant of Russian Science Foundation (project No. 17-72-10079). The electron microscopy examination was carried out at the Center for Collective Use of the Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences (Krasnoyarsk, Russia). V.A.E. and E.D.O. thank RFFI-18-32-00998_mol_a and RFFI-19-02-00859_a projects for support of development of two aqueous phase technique for nanotube separation.
Аннотация: The dispersions of semiconducting (sc-) and metallic (m-) SWCNTs with purity more than 98 and 86%, correspondingly, were obtained by using the aqueous two-phase extraction method. The unseparated (un-) SWCNTs contained ~3/4 of semiconducting and ~1/4 of metallic nanotubes. Thin films based on unseparated, semiconducting and metallic SWCNTs were prepared by vacuum filtration method. An Atomic Force Microscopy (AFM) and a Transmission Electronic Microscopy (TEM) were used to investigate the thin film microstructure. The thin SWCNT film transmittance was measured in the wavelength range of 300–1500 nm. Thermoelectric properties were carried out in the temperature range up to 200 °C. The largest Seebeck coefficient was observed for thin films based on semiconducting SWCNTs. The maximum value was 98 μV/K under the temperature of 170 °C. The lowest resistivity was 7.5·10−4·Ohm·cm at room temperature for thin un-SWCNT films. The power factor for m-SWCNT and un-SWCNT films was 47 and 213 μW m−1 K−2, correspondingly, at room temperature and 74 and 54 μW m−1 K−2 at 200 °C, respectively. For a thin sc-SWCNT film the maximum power factor was 2.8 μW m−1 K−2 at 160 °C. The un-SWCNT film thermal conductivity coefficient was 5.63 and 3.64 W m−1 K−1 and a thermoelectric figure of merit was 0.011 and 0.016 at temperatures of 23 and 50 °C, respectively.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Elesina V. I., Churilov G. N., Vnukova N. G., Dudnik A. I., Osipova I. V.
Заглавие : Filtration process combined with mechanical action, as a method for efficient extraction of endohedral metallofullerenes from carbon soot
Место публикации : Fuller. Nanotub. Carbon Nanostruct. - 2019. - Vol. 27, Is. 10. - P.803-807. - ISSN 1536383X (ISSN), DOI 10.1080/1536383X.2019.1648439
Примечания : Cited References: 22
Аннотация: The paper presents results of fullerenes and endohedral metallofullerenes extracts studies, isolated from the graphite rods carbon soot spray, and containing Y2O3 in a high frequency arc discharge. Two ways of extraction were applied and compared–(1) the classic method of Soxhlet extraction, and (2) the one developed by our team–extraction based on mechanical action combined with filtration. To implement the method, we used a laboratory version of installation, embodying technical solutions for rapid extraction. Chromatographic and mass spectrometry studies of fullerene extracts obtained by these methods revealed that by combining mechanical action with simultaneous filtration, we can significantly intensify and reduce the process of extracting fullerenes and endohedral metallofullerenes compared to the Soxhlet extraction method. This is especially evident in the release of endohedral metallofullerenes. Our method allows to reduce the release time of fullerenes from 10 g of carbon soot on laboratory installation up to 15 minutes, against the Soxhlet extraction method taking 18 hours. Whilst, the total number of fullerenes extracted by both methods almost coincides (the extraction method using mechanical action allowed us to extract 0.2-0.4 wt. % more), the composition of the isolated fullerene mixtures is different. The relative content of higher fullerenes and endohedral metallofullerenes exceeds when the mechanical action-based extraction method applied. © 2019, © 2019 Taylor & Francis Group, LLC.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Белоусов А.Л., Патрушева Т.Н., Карачаров А.А., Иваненко, Александр Анатольевич, Кирик С.Д., Холькин А.И.
Заглавие : Пленки аморфного и кристаллического оксида никеля, полученные экстракционно-пиролитическим методом для электрохромных ячеек
Место публикации : Хим. технол. - 2019. - Т. 20, № 5. - С. 215-221. - ISSN 1684-5811, DOI 10.31044/1684-5811-2019-20-5-215-221
Примечания : Библиогр.: 8
Аннотация: Представлены исследования тонких пленок оксида никеля, полученных экстракционно-пиролитическим методом на стеклянных и кварцевых подложках при температурах 380-600 °С. Пленки охарактеризованы методами атомно-силовой микроскопии и рентгеновской дифракции. Показано, что на стекле формируются аморфные, а на кварце - кристаллические пленки оксида никеля. Размер зерна в пленках зависит от температуры отжига, при этом повышенные температуры отжига приводят к рекристаллизации и снижению размера зерна в пленках NiO от 130 до 35 нм.Study results of thin films of nickel oxide, produced by the extraction-pyrolitic method on glass and quartz substrates at temperatures 380-600 °С are presented. The film characteristics were obtained by the methods of atomic-force microscopy and X-ray diffraction. It has been found out that amorphous films are formed on glass and crystalline ones of nickel oxide are formed on quartz. Grain dimensions in the films depend on annealing temperature.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Elesina V. I., Dudnik A. I., Vnukova N. G.
Заглавие : Ultrafast method of fullerenes extraction from carbon condensate
Место публикации : Fuller. Nanotub. Carbon Nanostruct. - 2019. - Vol. 27, Is. 3. - P.225-232. - ISSN 1536383X, DOI 10.1080/1536383X.2018.1543277
Примечания : Cited References: 46. - The authors are grateful to Alexey Popov (Leibniz Institute for Solid State and Materials Research, Dresden, German) for his contribution in conducting mass spectrometer studies.
Ключевые слова (''Своб.индексиров.''): solution extraction--mechanical extraction--fullerenes--soxhlet
Аннотация: The Soxhlet extraction method (SE) only used in the extraction of fullerenes from carbon condensate (CC) obtained in the fullerene production facility, which in the literature is often referred to as carbon black, does not provide complete extraction. Fullerenes can also be extracted from the CC suspension and the solvent by the mechanical extraction method (ME) and show higher degree of extraction efficiency. This method combined with filtration process takes only a few minutes and allows a significant reduction in solvent consumption. Extraction via the ME method application makes it possible to carry out extraction of fullerenes twenty times faster than by the SE method. It can be used as an independent method, bypassing the extraction by the SE method, and also as an additional one. Application of the ME method allows additional extraction of fullerenes weight percentage from the CC, after extracting fullerenes from it applying the SE method. In this instance the higher fullerenes prevail in the essences extracted by the ME method with their content reaching as high as 39.50 wt%. The obtained samples of fullerene mixtures (FM) are characterized by the methods of high-performance liquid chromatography and mass spectrometry. Analysis of the results shows that the composition of the FM, isolated by the ME method, differs from the compositions extracted via the ME method.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tarasov A. S., Lukyanenko A. V., Rautskii M. V., Bondarev I. A., Smolyakov D. A., Tarasov I. A., Yakovlev I. A., Varnakov S. N., Ovchinnikov S. G., Baron F. A., Volkov N. V.
Заглавие : Spin-dependent electrical hole extraction from low doped p-Si via the interface states in a Fe3Si/p-Si structure
Коллективы : Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund [18-42-243022]; Russian Foundation for Basic Research [18-32-00035]; Ministry of Education and Science of the Russian Federation; Siberian Branch of the Russian Academy of Sciences [II.8.70]; Fundamental research program of the Presidium of the RAS [32]
Место публикации : Semicond. Sci. Technol. - 2019. - Vol. 34, Is. 3. - Ст.035024. - ISSN 0268-1242, DOI 10.1088/1361-6641/ab0327. - ISSN 1361-6641(eISSN)
Примечания : Cited References: 56. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund by project. 18-42-243022 and supported in part by the Russian Foundation for Basic Research by project no. 18-32-00035. The work was partially supported by the Ministry of Education and Science of the Russian Federation and by Siberian Branch of the Russian Academy of Sciences (Project II.8.70) and Fundamental research program of the Presidium of the RAS no. 32 "Nanostructures: physics, chemistry, biology, basics of technologies"
Предметные рубрики: ALLOYS
Ключевые слова (''Своб.индексиров.''): spin accumulation--interface states--hybrid structures--hanle effect--iron silicide
Аннотация: Spin accumulation effect in Fe3Si/p-Si structure with low boron doped silicon substrate was found. Calculated spin lifetimes are comparable with results reported earlier but for structures with highly doped semiconductors (SC) with or without a tunnel barrier introduced between the SC and ferromagnet (FM). Electrical characterization of a prepared Fe3Si/p-Si diode allowed the determination of possible reasons for the pronounced spin signal. Analysis of the forward bias I-V curve revealed a Schottky barrier at the Fe3Si/p-Si interface with a height of φBp = 0.57 eV. Then, using impedance spectroscopy, we observed interface states localized in the band gap of silicon with energy of E LS = 40 meV. Such states most probably cause the observed spin signal. We believe that in our experiment, spin-dependent hole extraction was performed via the interface states resulting in the minority spin accumulation in the silicon valence band. The observed effect paves the way to the development of different spintronic devices based on FM/SC structures without dielectric tunneling barriers.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kononova O. N., Duba E. V., Medovikov D. V., Krylov A. S.
Заглавие : Ion-exchange sorption of palladium(II) from hydrochloric acid solutions in the presence of silver(I)
Место публикации : Russ. J. Phys. Chem. A. - 2018. - Vol. 92, Is. 10. - P.2053-2059. - ISSN 0036-0244, DOI 10.1134/S0036024418100138. - ISSN 1531-863X(eISSN)
Примечания : Cited References: 36
Предметные рубрики: PLATINUM-GROUP METALS
RECOVERY
COMPLEXES
CHLORIDE
PD(II)
Ключевые слова (''Своб.индексиров.''): palladium--silver--hydrochloric acid solutions--sorption--sorptive extraction
Аннотация: The sorptive extraction of palladium(II) chloride complexes in the presence of silver(I) chloride complexes from 2 and 4 M aqueous solutions of HCl with a series of Purolite anionites with different functional groups is studied. An anion exchange mechanism of sorption is identified from Raman spectroscopy data. Kinetic properties that are inherent to the investigated ionites and allow the elution of palladium(II) and silver(I) after their extraction in a dynamic mode are revealed.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Churilov G. N., Vnukova N. G., Tomashevich E. V., Dudnik A. I., Glushchenko G. A., Dubinina I. A., Gulyaeva U. E., Mel'nikova E. I.
Заглавие : Yttrium-containing endohedral metallofullerenes: Synthesis and extraction
Коллективы : Ministry of Education and Science of the Russian Federation, Russian/Japanese Project [14.613.21.0010, RFMEFl61314X0010]
Место публикации : Phys. Solid State: MAIK Nauka-Interperiodica / Springer, 2017. - Vol. 59, Is. 8. - P.1662-1665. - ISSN 1063-7834, DOI 10.1134/S1063783417080054. - ISSN 1090-6460(eISSN)
Примечания : Cited References:11. - This study was supported by the Ministry of Education and Science of the Russian Federation, Russian/Japanese Project, agreement no. 14.613.21.0010, ID RFMEFl61314X0010.
Предметные рубрики: FULLERENES
PRESSURE
PLASMA
Аннотация: Yttrium-containing endohedral metallofullerenes are synthesized in an RF arc discharge in the helium flow with embedded Y2O3. It is shown that the formation of the metallofullerenes depends on the helium pressure in a chamber; however, this dependence cannot be explained using the model of formation of conventional fullerenes without a guest atom in a molecule. The results of extraction of Y@C-82 by pyridine and carbon disulfide are reported. The pressure corresponding to the maximum yttrium-containing endohedral metallofullerene content is shown to be 60 kPa; under this pressure, extraction by carbon disulfide allows obtaining 27.1 wt % of the endohedral metallofullerene, while extraction by pyridine yields its amount of 17.3 wt %.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Patrusheva T. N., Snezhko N. Yu., Belousov A. L., Rizhenkov A. V., Mikhlin Y. L., Kirik S. D., Bondarenko G. N., Zharkov S. M., Romanov A. A.
Заглавие : Transparent conductive ITO coatings obtained by pyrolysis of metal extracts
Место публикации : J. Appl. Chem. Sci. Int. - 2015. - Vol. 3, Is. 1. - P.21-28. - ISSN 2395-3705
Ключевые слова (''Своб.индексиров.''): indium-tin oxide--thin films--extraction-pyrolysis technique--liquid precursors--nanocrystalline structure
Аннотация: Thin films of indium-tin oxide (ITO) have been prepared by pyrolysis of liquid organic-extracts of indium and tin. The films were deposited on glass substrate in the atmospheric condition. Extraction-pyrolytic method adopted here uses cheap starting materials and provides the required stoichiometric ratio by mixing the stable liquid precursors in appropriate concentration. Thermal decomposition processes are induced in the narrow temperature range of 350–400°C. The zirconium-yttrium oxide (ZYO) sublayer was deposited on glass substrate in advance to provide homo epitaxial growth. This would induce reduction in intrinsic stress of the films due to matching in thermal expansion coefficient with ITO film. XPS studies showed the absence of impurity elements in these extraction-pyrolytic technique derived ITO films and the spectra is quite similar to that for ITO films deposited in vacuum environment. ITO film has a nanocrystalline structure with grain size of about 6 nm.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kononova O. N., Duba E. V., Karplyakova N. S., Krylov A. S.
Заглавие : Ion-exchange extraction of platinum(II,IV) from chloride solutions in the presence of iron(III)
Место публикации : Russ. J. Phys. Chem. A: MAIK Nauka-Interperiodica / Springer, 2015. - Vol. 89, Is. 8. - P.1464-1470. - ISSN 0036-0244, DOI 10.1134/S0036024415080166. - ISSN 1531-863X
Примечания : Cited References: 28
Предметные рубрики: RHODIUM
Ключевые слова (''Своб.индексиров.''): platinum--iron--ionites--sorption--hydrochloric solutions--sorption
Аннотация: The sorption concentration of platinum(II,IV) in the presence of iron(III) is studied on new samples of domestically produced ionites of the CYBBER brand. In comparing the sorption and kinetic properties of the new ionites to those of sorbents of the Purolite brand studied earlier, the higher effectiveness of the former is demonstrated via the extraction of platinum(II,IV) ions from strongly and weakly acidic chloride solutions. It is found that the sorbed platinum ions can be completely separated from iron(III) ions through separate elution using 0.01-0.001 M HCl (iron ions) and a thiourea solution (80 g/L) in 0.3 M H2SO4 (platinum ions).
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Patrusheva T. N., Aleksandrovsky A. S., Khval'ko A. A., Kolovskii Yu.V., Polyushkevich A. V., Khol'kin A. I.
Заглавие : Luminescent oxide materials obtained by the extraction pyrolytic method
Место публикации : Theor. Found. Chem. Eng.: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 46, Is. 4. - P.379-383. - ISSN 0040-5795, DOI 10.1134/S0040579512040069
Примечания : Cited References: 13. - The work was supported by the Russian Foundation for Basic Research project (no. 10-03-00188a).
Ключевые слова (''Своб.индексиров.''): extraction pyrolytic method--luminescent films--x-ray diffraction--luminescence spectra
Аннотация: Luminescent Y1.74Eu0.16Bi0.1O3 films have been obtained by extraction pyrolytic method. The formation of a crystalline structure in the film upon isothermal annealing in air at 600–650°C was established by X-ray diffraction. Single-phase Y1.74Eu0.16Bi0.1O3 films begin to exhibit luminescent properties after pyrolysis at 500°C; the intensity of luminescence increases with increasing temperature. The films annealed at 800°C consists of defect-free homogeneous crystallites with sizes of about 0.7 μm and demonstrats high luminescence intensity.
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18.

Вид документа : Статья из журнала
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Автор(ы) : Mel'nikov A. M., Kononova O. N., Pavlenko N. I., Krylov A. S.
Заглавие : Ion exchange equilibria in simultaneous extraction of platinum(II, IV) and rhodium(III) from hydrochloric solutions
Место публикации : Russ. J. Phys. Chem. A: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 86, Is. 6. - P.1018-1024. - ISSN 0036-0244, DOI 10.1134/S0036024412060192
Примечания : Cited References: 24
Ключевые слова (''Своб.индексиров.''): platinum--rhodium--ionites--ion exchange equilibria--hydrochloric acid solutions--sorption
Аннотация: Regularities of sorption extraction of platinum(II, IV) and rhodium(III) by anion exchangers of various physical and chemical structure in the presence of hydrochloric media were studied. It is established that AM-2B, Purolite A 500, and Purolite S 985 ionites adsorb complex anions of platinum metals employing mixed mechanism. A high affinity of the studied anionites for the studied complex anions of platinum and rhodium is established.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kononova O.N., Melnikov A.M., Borisova T.V., Krylov A. S.
Заглавие : Simultaneous ion exchange recovery of platinum and rhodium from chloride solutions
Место публикации : Hydrometallurgy. - 2011. - Vol. 105, Is. 3-4. - P.341-349. - JAN. - ISSN 0304-386X, DOI 10.1016/j.hydromet.2010.11.009
Примечания : Cited Reference Count: 46
Предметные рубрики: GROUP-METALS PGM
SEPARATION
CATALYST
ANION
ADSORPTION
EXTRACTION
CHEMISTRY
RESIN
Ключевые слова (''Своб.индексиров.''): platinum--rhodium--sorption--anion exchangers--chloride solutions--anion exchangers--chloride solutions--platinum--rhodium--sorption--ammonium thiocyanate--anion exchangers--basic parameters--chemical structure--chloride solutions--diffusion coefficients--distribution coefficient--exchange capacities--kinetic properties--noble metals--purolite--rhodium chloride--separation factors--sorption ability--work focus--ammonium compounds--chlorine compounds--desorption--hydrochloric acid--ion exchange--ion exchange resins--ions--platinum--platinum compounds--potassium hydroxide--precious metals--recovery--rhodium--sulfuric acid--thioureas--urea--rhodium compounds
Аннотация: This work focuses on the sorption recovery of platinum (II, IV) and rhodium (III) simultaneously present in chloride solutions, freshly prepared and stored over 3 months, on commercial anion exchangers with different physical and chemical structure. The sorption was carried out from solutions with 0.001-4.0 mol/L HCl. The initial platinum and rhodium concentrations in contacting solutions were 0.25-2.5 mmol/L Sorption and kinetic properties of the chosen anion exchangers were investigated and the basic parameters of exchange capacity, recovery, distribution coefficients, separation factors, process rate, diffusion coefficients and half-exchange times were calculated. It is shown that anion exchangers investigated possess high sorption ability to platinum and rhodium chloride complexes, which does not deteriorate in case of stored solutions. Desorption of platinum and rhodium from the resins investigated was carried out with hydrochloric acid (2 mol/L), thiourea (1 mol/L) in sulfuric acid (2 mol/L) or in potassium hydroxide (2 mol/L) as well as by ammonium thiocyanate (2 mol/L). It was shown that complete separation of platinum and rhodium can be carried out with 2 mol/L HCl on anion exchanger Purolite S 985, whereas 2 mol/L NH(4)SCN as an elution agent leads to complete separation of noble metals on anion exchangers Purolite S 985, Purolite A 500 and AM-2B. (C) 2010 Elsevier B.V. All rights reserved.
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20.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Patrin G.S., Polyakova K.P., Patrusheva T.N., Klabukov A.A., Seredkin V.A., Patrin K.G., Polyakov V.V.
Заглавие : Polycrystalline La1-xSrxMnO3 films prepared by extraction pyrolitic method
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Уральское отделение РАН
Место публикации : IV Euro-Asian Symposium "Trends in MAGnetism" Nanospintronics (EASTMAG-2010). School for young scientist "Spintronics": June 28 - Lule 2, 2010"Book of abstracts. - Ekaterinburg, 2010. - P.199
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