A5076245254- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Radioactive element chemistry and processing
- Metal complexes synthesis and properties
- Lanthanide and Transition Metal Complexes
- Magnetism in coordination complexes
- Nuclear materials and radiation effects
- Nuclear Materials and Properties
- X-ray Spectroscopy and Fluorescence Analysis
- Catalytic Processes in Materials Science
- Metal Extraction and Bioleaching
- Porphyrin and Phthalocyanine Chemistry
- Chemical Synthesis and Characterization
- Radioactive contamination and transfer
- Inorganic and Organometallic Chemistry
- Geochemistry and Geologic Mapping
- Quantum Dots Synthesis And Properties
- Crystal structures of chemical compounds
- Luminescence Properties of Advanced Materials
- Crystal Structures and Properties
- Extraction and Separation Processes
- Metal-Organic Frameworks: Synthesis and Applications
- Anodic Oxide Films and Nanostructures
- Thermal and Kinetic Analysis
- Silicone and Siloxane Chemistry
Kurchatov Institute
2016-2025
Lomonosov Moscow State University
2020-2025
MIREA - Russian Technological University
2025
Institute of Geology of Ore Deposits Petrography Mineralogy and Geochemistry
2016-2023
Moscow State University
2023
Physico-Technical Institute
2016-2018
Russian Academy of Sciences
2016-2017
Izhevsk State Technical University
2017
Institute of Physics and Technology
2017
Karlsruhe Institute of Technology
2016
The activation and conversion of hydrocarbons is one the most important challenges in chemistry. Transition-metal ions (V, Cr, Fe, Co, etc.) isolated on silica surfaces are known to catalyze such processes. mechanisms these processes currently unknown but thought involve C–H as rate-determining step. Here, we synthesize well-defined Co(II) a surface using metal siloxide precursor followed by thermal treatment under vacuum at 500 °C. We show that sites catalysts for number hydrocarbon...
Extremely defect graphene oxide (dGO) is proposed as an advanced sorbent for treatment of radioactive waste and contaminated natural waters. dGO prepared using a modified Hummers oxidation procedure, starting from reduced (rGO) precursor, shows significantly higher sorption U(VI), Am(III), Eu(III) than standard oxides (GOs). Earlier studies revealed the mechanism radionuclide related to defects in GO sheets. Therefore, explosive thermal exfoliation graphite was used prepare rGO with large...
Hydrothermal treatment of nanoscale ThO 2 in a sodium–phosphate buffer yields previously uncharacterized hydrated sodium–thorium phosphate with pH-dependent phase evolution.
Abstract Highly luminescent, photostable, and soluble lanthanide pentafluorobenzoates have been synthesized thoroughly characterized, with a focus on Eu III Tb complexes as visible emitters Nd , Er Yb infrared emitters. Investigation of the crystal structures in powder form single crystals by using X‐ray diffraction revealed five different structural types, including monomeric, dimeric, polymeric. The local structure solutions was studied absorption spectroscopy. photoluminescence quantum...
The exotic “Asian Lantern” heterometallic cage silsesquioxane [(PhSiO<sub>1.5</sub>)<sub>20</sub>(FeO<sub>1.5</sub>)<sub>6</sub>(NaO<sub>0.5</sub>)<sub>8</sub>(<italic>n</italic>-BuOH)<sub>9.6</sub>(C<sub>7</sub>H<sub>8</sub>)] (<bold>I</bold>) was obtained and characterized by X-ray diffraction, EXAFS, topological analyses DFT calculation.
Minerals of the Fe-As-S system are main components Au ores in many hydrothermal deposits, including Carlin-type volcanogenic massive sulfide epithermal, mesothermal, sedimentary-hosted systems, and Archean lodes. The "invisible" (or refractory) form is present all types often predominates. Knowledge chemical state (local atomic environment/structural position, electronic structure, oxidation state) crucial for understanding conditions ore formation necessary physical-chemical modeling...
Abstract Here we provide evidence that the formation of PuO 2 nanoparticles from oxidized Pu VI under alkaline conditions proceeds through an intermediate V solid phase, similar to NH 4 CO 3 , which is stable over a period several months. For first time, state‐of‐the‐art experiments at M and L absorption edges combined with theoretical calculations unambiguously allow determine oxidation state local structure this phase.
A new pentanuclear "cylinder"-like cobalt(ii) phenylsilsesquioxane [(PhSiO1.5)10(CoO)5(NaOH)] exhibits a slow relaxation of the magnetization and high catalytic activity stereoselectivity in oxidation alkanes alcohols.
Cation-disordered oxides have been ignored as positive electrode material for a long time due to structurally limited lithium insertion/extraction capabilities. In this work, case study is carried out on nickel-based cation-disordered Fm3 ̅m LiNi0.5M0.5O2 materials. The present investigation targets tailoring the electrochemical properties rock-salt by electronic considerations. compositional space binary LiM+3O2 with metals active +3/+4 redox couples extended ternary LiA0.5B0.5O2 A = Ni2+...
The nanoscience field often produces results more mystifying than any other discipline. It has been argued that changes in the plutonium dioxide (PuO2) particle size from bulk to nano can have a drastic effect on PuO2 properties. Here we report full characterization of nanoparticles (NPs) at atomic level and probe their local electronic structures by variety methods available synchrotron.
Reprocessing of spent nuclear fuel (SNF) is an important task in a frame ecology and rational use natural resources. Uranium, as the main component SNF (>95%), can be recovered for further fresh fuel. To minimize amount solid radioactive waste generated during reprocessing, new extractants are under investigation. Diamides 1,10-phenanthroline-2,9-dicarboxylic acid perspective tetradentate N-donor ligands that form strong complexes with f-elements, which soluble polar organic solvents. As...
Abstract A heterometallic phenylsilsesquioxane [(PhSiO 1,5 ) 22 (CoO) 3 (NaO 0.5 6 ]⋅(EtOH) ⋅(H 2 O) 1 cage architecture of Co II ions in a triangular topology exhibits slow dynamic behavior its magnetization, induced by the freezing spins individual molecules.
Abstract A series of four unprecedented heterometallic metallagermsesquioxanes were synthesized. Their cage‐like architectures have a unique type molecular topology consisting the hexairon oxo {Fe 6 O 19 } core surrounded in triangular manner by three cyclic germoxanolates [PhGe(O)O] 5 . This structural organization induces antiferromagnetic interactions between Fe III ions through oxygen atoms. Evaluated for this first time catalysis, these compounds showed high catalytic activity oxidation...
Nanoparticles are ubiquitous in nature and increasingly important for technology. They subject to bombardment by ionizing radiation a diverse range of environments. In particular, nanodiamonds represent variety nanoparticles significant fundamental applied interest. Here we present combined experimental computational study the behaviour under irradiation xenon ions. Unexpectedly, observed pronounced size effect on resistance nanodiamonds: particles larger than 8 nm behave similarly...
Extended X-ray absorption fine structure (EXAFS) is a comprehensive and usable method for characterizing the structures of various materials, including radioactive nuclear materials. Unceasing discussions about interpretation EXAFS results actinide nanoparticles (NPs) or colloids were still present during last decade. In this study, new experimental data PuO 2 CeO NPs with different average sizes compared published on AnO that highlight best fit structural data. terms structure, , ThO UO...