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Your search keyword '"Trigub, Alexander L."' showing total 28 results
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28 results on '"Trigub, Alexander L."'

9. Zinc Complexes of Fluorosubstituted N-[2-(Phenyliminomethyl)phenyl]-4-methylbenzenesulfamides: Synthesis, Structure, Luminescent Properties, and Biological Activity

Author

Burlov, Anatolii S., primary, Vlasenko, Valery G., additional, Milutka, Maxim S., additional, Koshchienko, Yurii V., additional, Lazarenko, Vladimir A., additional, Trigub, Alexander L., additional, Kolodina, Alexandra A., additional, Zubenko, Alexander A., additional, Braga, Elena V., additional, Gusev, Alexey N., additional, and Linert, Wolfgang, additional

Published
2024
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11. Formation of Neptunium(V) Carbonates: Examining the Forceful Influence of Alkali and Alkaline Earth Cations

Author

Kuzenkova, Anastasiia S., primary, Plakhova, Tatiana V., additional, Nevolin, Iurii M., additional, Kulikova, Elizaveta S., additional, Trigub, Alexander L., additional, Yapaskurt, Vasiliy O., additional, Shaulskaya, Maria D., additional, Tsymbarenko, Dmitry M., additional, Romanchuk, Anna Yu., additional, and Kalmykov, Stepan N., additional

Published
2023
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14. Solvent Extraction and Complexation Studies of Pyridine-di-Phosphonates with Lanthanides(III) in Solutions

Author

Konopkina, Ekaterina A., primary, Matveev, Petr I., additional, Kharcheva, Anastasia V., additional, Sumynova, Tsagana B., additional, Pozdeev, Anton S., additional, Novichkov, Daniil A., additional, Trigub, Alexander L., additional, Kalle, Paulina, additional, Kirsanova, Anna A., additional, Kalmykov, Stepan N., additional, Petrov, Vladimir G., additional, and Borisova, Nataliya E., additional

Published
2023
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16. Iron phthalocyanine derived Fe1/h-BN single atom catalysts for CO2 hydrogenation

Author

Leybo, Denis V., primary, Ryzhova, Anastasia A., additional, Matveev, Andrei T., additional, Firestein, Konstantin L., additional, Tarakanov, Pavel A., additional, Konopatsky, Anton S., additional, Trigub, Alexander L., additional, Sukhanova, Ekaterina V., additional, Popov, Zakhar I., additional, Golberg, Dmitri V., additional, and Shtansky, Dmitry V., additional

Published
2023
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17. Synthesis, Structure, Spectral-Luminescent Properties, and Biological Activity of Chlorine-Substituted N-[2-(Phenyliminomethyl)phenyl]-4-methylbenzenesulfamide and Their Zinc(II) Complexes

Author

Burlov, Anatolii S., primary, Vlasenko, Valery G., additional, Milutka, Maxim S., additional, Koshchienko, Yurii V., additional, Makarova, Nadezhda I., additional, Lazarenko, Vladimir A., additional, Trigub, Alexander L., additional, Kolodina, Alexandra A., additional, Zubenko, Alexander A., additional, Metelitsa, Anatoly V., additional, Garnovskii, Dmitrii A., additional, Gusev, Alexey N., additional, and Linert, Wolfgang, additional

Published
2022
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18. Study of the Cathode Pt-Electrocatalysts Based on Reduced Graphene Oxide with Pt-SnO 2 Hetero-Clusters.

Author

Spasov, Dmitry D., Ivanova, Nataliya A., Mensharapov, Ruslan M., Sinyakov, Matvey V., Zasypkina, Adelina A., Kukueva, Elena V., Trigub, Alexander L., Kulikova, Elizaveta S., and Fateev, Vladimir N.

Subjects
STANNIC oxide, CARBON-black, AMORPHOUS carbon, SURFACE interactions, CATHODES, GRAPHENE oxide, GRAPHENE synthesis
Abstract

A complex study of the structure, morphology, and electrochemical properties of the Pt20/SnO210/RGO electrocatalyst is presented. The advantage of the chemical synthesis of reduced graphene oxide (c-RGO) compared to thermal methods (t-RGO) is due to the formation of graphene plates with amorphous carbon black agglomerates and the chemical composition of the surface. The nature of the interaction between platinum and tin dioxide particles and a conclusion about the formation of heterostructures Pt-SnO2 with the surface interaction of lattices excluding the formation of hetero phases has been established. This achieves high dispersity during the formation of platinum particles without significant agglomeration and increases the electrochemical surface area (ESA) of platinum to 85 m2 g−1 vs. carbon black. In addition, the surface interaction of particles and the formation of hetero-clusters Pt-SnO2 can cause the improved activity and stability of the Pt20/SnO210/c-RGO electrocatalyst. [ABSTRACT FROM AUTHOR]

Published
2023
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19. In Situ X-ray Absorption Spectroscopy Cells for High Pressure Homogeneous Catalysis

Author

Shvets, Petr V., primary, Prokopovich, Pavel A., additional, Dolgoborodov, Artur I., additional, Usoltsev, Oleg A., additional, Skorynina, Alina A., additional, Kozyr, Elizaveta G., additional, Shapovalov, Viktor V., additional, Guda, Alexander A., additional, Bugaev, Aram L., additional, Naranov, Evgeny R., additional, Gorbunov, Dmitry N., additional, Janssens, Kwinten, additional, De Vos, Dirk E., additional, Trigub, Alexander L., additional, Fonda, Emiliano, additional, Leshchinsky, Mark B., additional, Zagackij, Vladimir R., additional, Soldatov, Alexander V., additional, and Goikhman, Alexander Yu., additional

Published
2022
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20. Electrochemical Detection of a Novel Pt(IV) Prodrug with the Metronidazole Axial Ligand in the Hypoxic Area

Author

Spector, Daniil V., primary, Erofeev, Alexander S., additional, Gorelkin, Petr V., additional, Vaneev, Alexander N., additional, Akasov, Roman A., additional, Ul’yanovskiy, Nikolay V., additional, Nikitina, Vita N., additional, Semkina, Alevtina S., additional, Vlasova, Kseniya Yu, additional, Soldatov, Mikhail A., additional, Trigub, Alexander L., additional, Skvortsov, Dmitry A., additional, Finko, Alexander V., additional, Zyk, Nikolay V., additional, Sakharov, Dmitry A., additional, Majouga, Alexander G., additional, Beloglazkina, Elena K., additional, and Krasnovskaya, Olga O., additional

Published
2022
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21. Iron phthalocyanine derived Fe1/h-BN single atom catalysts for CO2 hydrogenation.

Author

Leybo, Denis V., Ryzhova, Anastasia A., Matveev, Andrei T., Firestein, Konstantin L., Tarakanov, Pavel A., Konopatsky, Anton S., Trigub, Alexander L., Sukhanova, Ekaterina V., Popov, Zakhar I., Golberg, Dmitri V., and Shtansky, Dmitry V.

Abstract

Iron phthalocyanine-coated hexagonal boron nitride (FePc/h-BN) nanoparticles, obtained by FePcCl adsorption on the h-BN surface from a dimethylformamide solution, were subjected to heat treatment in order to form single atom Fe1/h-BN catalysts. Samples were characterized by means of X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, scanning and transmission electron microscopy, and temperature-programmed oxidation/reduction/desorption. The FePc deposition process was optimized to avoid the formation of nanoparticles. FePc exhibits high thermal stability in a hydrogen atmosphere and decomposes into a single iron atom when oxidizing in an O2 flow at 350 °C (sample Fe1-ox/h-BN). Subsequent reductive heat treatment in hydrogen (sample Fe1-red/h-BN) results in the formation of Fe-based nanoparticles due to Fe1 diffusion and association, resulting in a decrease in catalytic activity. Hydrogenation proceeds according to the Eley–Rideal mechanism with CO2 chemisorption on the Fe1 surface species (Fe1-ox/h-BN) and is changed to the Langmuir–Hinshelwood mechanism (Fe1-red/h-BN). Selectivity for hydrocarbons increases after reduction of the Fe1-ox/h-BN sample. Our results open up new possibilities for using metal phthalocyanine as a precursor for cheap, reproducible, and efficient single atom catalysts for CO2 hydrogenation. [ABSTRACT FROM AUTHOR]

Published
2023
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22. High Surface Area “3D Graphene Oxide” for Enhanced Sorption of Radionuclides (Adv. Mater. Interfaces 18/2022)

Author

Boulanger, Nicolas, primary, Kuzenkova, Anastasiia S., additional, Iakunkov, Artem, additional, Nordenström, Andreas, additional, Romanchuk, Anna Yu., additional, Trigub, Alexander L., additional, Zasimov, Pavel V., additional, Prodana, Mariana, additional, Enachescu, Marius, additional, Bauters, Stephen, additional, Amidani, Lucia, additional, Kvashnina, Kristina O., additional, Kalmykov, Stepan N., additional, and Talyzin, Alexandr V., additional

Published
2022
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24. High Surface Area '3D Graphene Oxide' for Enhanced Sorption of Radionuclides

Author

Boulanger, Nicolas, Kuzenkova, Anastasiia S., Iakunkov, Artem, Nordenström, Andreas, Romanchuk, Anna Yu., Trigub, Alexander L., Zasimov, Pavel V., Prodana, Mariana, Enachescu, Marius, Bauters, Stephen, Amidani, Lucia, Kvashnina, Kristina O., Kalmykov, Stepan N., Talyzin, Aleksandr V., Boulanger, Nicolas, Kuzenkova, Anastasiia S., Iakunkov, Artem, Nordenström, Andreas, Romanchuk, Anna Yu., Trigub, Alexander L., Zasimov, Pavel V., Prodana, Mariana, Enachescu, Marius, Bauters, Stephen, Amidani, Lucia, Kvashnina, Kristina O., Kalmykov, Stepan N., and Talyzin, Aleksandr V.

Abstract

Here preparation of high surface area activated reduced graphene oxide (arGO) oxidized into a 3D analogue of defect-rich GO (dGO) is reported. Surface oxidation of arGO results in carbon to oxygen ratio C/O = 3.3, similar to the oxidation state of graphene oxide while preserving high BET surface area of about 880 m2 g−1. Analysis of surface oxidized arGO shows high abundance of oxygen functional groups which converts hydrophobic precursor into hydrophilic material. High surface area carbons provide the whole surface for oxidation without the need of intercalation and lattice expansion. Therefore, surface oxidation methods are sufficient to convert the materials into 3D architectures with chemical properties similar to graphene oxide. The "3D graphene oxide" shows high sorption capacity for U(VI) removal in an extraordinary broad interval of pH. Notably, the surface oxidized carbon material has a rigid 3D structure with micropores accessible for penetration of radionuclide ions. Therefore, the bulk "3D GO" can be used as a sorbent directly without dispersing, the step required for GO to make its surface area accessible for pollutants., This article also appears in: "Hot Topic: Carbon, Graphite, and Graphene"

Published
2022
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25. Cage-like manganesesilsesquioxanes: features of their synthesis, unique structure, and catalytic activity in oxidative amidations

Author

Astakhov, Grigorii S., primary, Khrustalev, Victor N., additional, Dronova, Marina S., additional, Gutsul, Evgenii I., additional, Korlyukov, Alexander A., additional, Gelman, Dmitri, additional, Zubavichus, Yan V., additional, Novichkov, Daniil A., additional, Trigub, Alexander L., additional, Shubina, Elena S., additional, and Bilyachenko, Alexey N., additional

Published
2022
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28. New antimicrobial materials with cerium ions in the composition of salts, solutions, and composite systems based on Ce3+(NO3)3 × 6H2O.

Author

Gainanova, Asiya A., Kuz'micheva, Galina M., Terekhova, Raisa P., Pashkin, Igor I., Trigub, Alexander L., Malysheva, Natal'ya E., Svetogorov, Roman D., Alimguzina, Aliya R., and Koroleva, Alexandra V.

Subjects
SALTWATER solutions, SOLUTION (Chemistry), BACTERIAL cell walls, X-ray photoelectron spectroscopy, IONS
Abstract

The results of detailed characterization of new antimicrobial materials in the form of Ce(NO3)3 × 6H2O salt with the proposed crystal-chemical composition of [Ce3+(H2O)4(NO3)3] × 2H2O and its aqueous solution by X-ray diffraction (XRD), differential scanning calorimetry (DSC), X-ray photoelectron spectroscopy (XPS), X-ray absorption spectroscopy (XAS) are presented. The stages of [Ce3+(H2O)4(NO3)3] × 2H2O thermal decomposition with the formation of [Ce3+(H2O)4(NO3)3] (<220 °C), Ce3+ONO3 (230–320 °C) and Ce4+O2 (>300 °C) are shown. It was found that Ce3+ ions in the composition of [Ce(H2O)4(NO3)3] × 2H2O salt and in its aqueous solution retain their formal charge (FC Ce = 3) and coordination number (CNCe = 10, where 6O from three NO3− groups and 4O from four 4H2O molecules) with the reorientation of nitro groups in Ce3+ far environment in an aqueous salt solution. It was established that [Ce3+(H2O)4(NO3)3] × 2H2O, [Ce3+(H2O)4(NO3)3] and Ce3+ONO3 salts inhibit the growth of Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa bacteria in the absence of radiation with a growth zone inhibition diameter D > 37 mm with Dmax = 45 mm on the multiphase sample ([Ce3+(H2O)4(NO3)3], Ce3+ONO3, Ce4+O2), which is higher than that on penicillin (D = 12–18 mm). It is shown that an increase in the [Ce3+(H2O)4(NO3)3] × 2H2O salt concentration in an aqueous solution has a positive effect on antimicrobial activity. It is not excluded that the absence of interaction of Ce3+ ions in the salt solution with Langmuir phospholipid monolayers of phosphatidylethanolamine (DPPE) and phosphatidylglycerin (DPPG) is associated with the damage to the protein component of the bacterial membrane and not with the phospholipid one and/or with the "penetration" of Ce3+ ions into the cell and violation of its water-ionic balance. It is shown that the "H-Beta – Ce3+(NO3)3 × 6H2O" system fabrication with biocompatible H-Beta zeolite contributes to the preservation of antimicrobial activity in the dark (Pseudomonas aeruginosa) with a decrease in the amount of the active component. [ABSTRACT FROM AUTHOR]

Published
2022
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