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 Найдено в других БД:Каталог книг и продолжающихся изданий (12)Нанотехнологии (12)Труды сотрудников Института химии твердого тела УрО РАН (8)Публикации Чарушина В.Н. (2)
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Общее количество найденных документов : 6
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1.

Вид документа : Статья из журнала
Шифр издания : 54/A 53
Автор(ы) : Kozitsina A., Malysheva N. N., Utepova I. A., Glazyrina Yu. A., Matern A. I., Brainina Kh., Chupakhin O. N.
Заглавие : An enzyme-free electrochemical method for the determination of E-coli using Fe3O4 nanocomposites with a SiO2 shell modified by ferrocene [Электронный ресурс]
Место публикации : Journal of Analytical Chemistry. - 2015. - Vol. 70, № 5. - С. 540-545
Систем. требования: http://apps.webofknowledge.com/
Примечания : Bibliogr. : p. 545 (37 ref.). - 20.01.2016
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): cyclic voltammetry--electroactive nanocomposite particles--immunoassay
Аннотация: An electrochemical immunoassay method is developed for determining the strain of Escherichia coli ATCC 25922 with the use of electroactive nanocomposite particles based on magnetite Fe3O4 coated by SiO2 modified with ferrocene as a signal label. A sensitive, direct, and easily measured analytical response is obtained by cyclic voltammetry. The developed method enables the determination of bacterial cells at a minimum concentration of 2.3 x 10(3) CFU/mL. The analytical range is 2.3 x 10(3)-2.3 x 10(7) CFU/mL; the detection limit is 2.5 x 10(2) CFU/mL. The required sample volume is 0.5 mL, and the analysis time is 40 min.
\\\\expert2\\nbo\\Journal of Analytical Chemistry\\2015, V. 70, N 5, p.540-545.pdf
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lavrova D. G., Zvonarev A. N., Alferov V. A., Khonina T. G., Shadrina E. V., Alferov S. V., Ponamoreva O. N.
Заглавие : Biocompatible silica-polyethylene glycol-based composites for immobilization of microbial cells by sol-gel synthesis
Место публикации : Polymers. - 2023. - Т. 15, № 2. - С. 458
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): ormosil composites--biofilter--biocatalysts
Аннотация: Biocatalysts based on the methylotrophic yeast Ogataea polymorpha VKM Y-2559 immobilized in polymer-based nanocomposites for the treatment of methanol-containing wastewater were developed. The organosilica composites with different matrix-to-filler ratios derived from TEOS/MTES in the presence of PEG (SPEG-composite) and from silicon-polyethylene glycol (STPEG-composite) differ in the structure of the silicate phase and its distribution in the composite matrix. Methods of fluorescent and scanning microscopy first confirmed the formation of an organosilica shell around living yeast cells during sol-gel bio-STPEG-composite synthesis. Biosensors based on the yeast cells immobilized in STPEG- and SPEG-composites are characterized by effective operation: the coefficient of sensitivity is 0.85 ± 0.07 mgO2 × min−1 × mmol−1 and 0.87 ± 0.05 mgO2 × min−1 × mmol−1, and the long-term stability is 10 and 15 days, respectively. The encapsulated microbial cells are protected from UV radiation and the toxic action of heavy metal ions. Biofilters based on the developed biocatalysts are characterized by high effectiveness in the utilization of methanol-rich wastewater—their oxidative power reached 900 gO2/(m3 × cycle), and their purification degree was up to 60%.
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3.

Вид документа : Статья из журнала
Шифр издания : 54/E 27
Автор(ы) : Titova Yu. A., Fedorova O. V., Rusinov G. L., Vigorov A. Yu., Krasnov V. P., Murashkevich A., Charushin V. N.
Заглавие : Effect of nanosized TiO2–SiO2 covalently modified by chiral molecules on the asymmetric Biginelli reaction [Электронный ресурс]
Место публикации : Catalysis Today. - 2015. - Vol. 241. - С. 270-274
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0920586114000704#
Примечания : Bibliogr. : p. 274 (23 ref.). - 02.07.2015
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): nanooxide tio2–sio--biginelli reaction --asymmetric catalysis
Аннотация: The method for immobilization of chiral molecules (menthol and proline derivatives) on the mixed nanooxide TiO2–SiO2 surface has been developed. The synthesized nanocomposites were used as catalysts of the Biginelli reaction. It was shown that inactive chiral molecules, when covalently bonded to the nanooxide surface, acquired properties of a chiral inducer in the asymmetric Biginelli reaction.
\\\\expert2\\nbo\\Catalysis Today\\2015, v.241, p.270.pdf
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4.

Вид документа : Статья из сборника (однотомник)
Шифр издания : 54/I-70
Автор(ы) : Fedorova O. V., Ovchinnikova I. G., Kharchuk V.G., Rusinov G. L., Uimin M. A., Mysik A.A., Yermakov A.Ye., Uhm Y. R., Rhee C. K., Charushin V. N.
Заглавие : Investigation of nanosized metal oxides as stereoselective catalysts of the Hantzsch and Biginelli reactions
Место публикации : 8-th International Symposium on Nanocomposites and Nanoporous Materials (ISNNM8) , Jeju, Korea, Febr. 22-24. 2007. - Jeju Haevichi Resort, Korea, 2007. - С. 181-182
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Madhavi V., Ramesh T., Reddy N. B., Zyryanov G. V.
Заглавие : Nanocomposite hydrogels for wastewater treatment
Место публикации : AIP conference proceedings. - 2022. - Vol. 2390. - Ст.020043
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): hydrogels--nanocomposites--nanotechnology
Аннотация: The insufficient access to drinking water is one of the most prevailing problems throughout the world. It is highly essential for future demands to bring wastewater to reusable form. Hence, water purification has been the focus and attention of many scientists and governmental agencies. The combination of adsorption and nanotechnology-oriented approach with conventional treatment methods has offered interesting benefits to treat waste water. During the last decade, hydrogels have been used as potential adsorbents for the removal of different types of water pollutants. The combination of hydrogels and nanomaterials with multifunctional framework leads to the development of hybrid hydrogels that gives synergistic effect to the novel materials. Because of their biocompatibility and ability to mix with other materials, hydrogels coupled with versatile chemical groups with well-defined three-dimensional porous structure were potentially used for removal of toxic pollutants in water. This article briefly reviews the recent progress in nanobased hydrogels with particular emphasis on wastewater treatment applications.
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6.

Вид документа : Статья из журнала
Шифр издания : 24/T 60
Автор(ы) : Zakharova G. S., Fattakhova Z. A., Ottmann A., Moller L., Thauer E., Klingeler R., Andreikov E. I., Puzyrev I. S., Zhu Q.
Заглавие : TIO2/C nanocomposites prepared by thermal annealing of titanium glycerolate as anode materials for lithium-ion batteries
Место публикации : Journal of materials science. - 2018. - Vol. 53, № 17. - С. 12244-12253
ББК : 24
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: TiO2/C nanocomposites have been synthesized by developing a facile route based on the annealing of titanium glycerolate in inert atmosphere at 250–850 °C. X-ray diffraction studies reveal that the annealing temperature determines the crystal structure of the TiO2 phase in the compounds, which can be amorphous, anatase, and rutile. In contrast, the nanosized rod-like morphology which to a certain extent is predefined by the titanium glycerolate precursor does not depend on the annealing temperature. The carbon content of the TiO2/C composites amounts to 16–29 wt% and shows up, e.g., in the characteristic Raman D and G bands. Anatase-structured TiO2/C, which is obtained at 600 °C, exhibits the best electrochemical performance among the studied materials. Without the addition of carbon black, it reaches an initial specific discharge capacity of 378 mA h g−1 at 100 mA g−1 and exhibits excellent rate capability with a capacity of 186 mA h g−1 at 1000 mA g−1.
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