A5082389407- Diamond and Carbon-based Materials Research
- High-pressure geophysics and materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Radioactive element chemistry and processing
- Geological and Geochemical Analysis
- Nuclear materials and radiation effects
- Nuclear Materials and Properties
- Glass properties and applications
- Advanced materials and composites
- Titanium Alloys Microstructure and Properties
- Luminescence Properties of Advanced Materials
- Catalytic Processes in Materials Science
- Carbon Nanotubes in Composites
- Electrocatalysts for Energy Conversion
- Radioactive contamination and transfer
- Catalysis and Oxidation Reactions
- Graphene research and applications
- Metal-Organic Frameworks: Synthesis and Applications
- Astro and Planetary Science
- Material Properties and Applications
- Intermetallics and Advanced Alloy Properties
- Boron and Carbon Nanomaterials Research
- Graphite, nuclear technology, radiation studies
- Porphyrin and Phthalocyanine Chemistry
Frumkin Institute of Physical Chemistry and Electrochemistry
2016-2025
All Russian Scientific Research Institute of Aviation Materials
2015-2023
Institute of Geology of Ore Deposits Petrography Mineralogy and Geochemistry
2013-2023
Kurchatov Institute
2008-2023
Lomonosov Moscow State University
1997-2022
FSUE FNPTS NIIIS named after Yu.Sedakov (Russia)
2021
Nizhny Novgorod State Pedagogical University
2020
Nizhny Novgorod State Technical University
2020
A.V. Shubnikov Institute of Crystallography
2001-2019
V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry
2000-2019
Ultrafine 5 nm ceria isotropic nanoparticles were prepared using the rapid chemical precipitation approach from cerium(III) nitrate and ammonium hydroxide aqueous solutions. The as-prepared shown to contain predominantly Ce(IV) species. solubility of nanocrystalline CeO2 at several pH values was determined ICP-MS radioactive tracer methods. Phase composition samples remained unchanged upon partial dissolution, while shape particles changed dramatically, yielding nanorods under neutral...
Hydrothermal treatment of nanoscale ThO 2 in a sodium–phosphate buffer yields previously uncharacterized hydrated sodium–thorium phosphate with pH-dependent phase evolution.
A rocket engine for Mars missions is proposed that could utilize CO2 accumulated from the Martian atmosphere as an oxidizer. For use possible fuel, various metals, their hydrides, and mixtures with hydrogen compounds are considered. Thermodynamic calculations show beryllium fuels ensure most impulse but poor inflammability of Be high toxicity its put obstacles to applications. Analysis performance other metals together parameters ignition combustion magnesium seems be promising fuel....
Abstract An efficient method to investigate the microstructure and spatial distribution of nitrogen nitrogen‐vacancy (N‐V) defects in detonation nanodiamond (DND) with primary particle sizes ranging from approximately 3 50 nm is presented. Detailed analysis reveals atomic concentrations as high at% 50% diamond particles smaller than 6 nm. A non‐uniform within larger DND also presented, indicating a preference for location defective central part or at twin boundaries. photoluminescence (PL)...
Development of efficient production methods nanodiamond (ND) particles containing substitutional nitrogen and nitrogen-vacancy (NV) complexes remains an important goal in the community. ND synthesized from explosives is generally not among preferred candidates for imaging applications owing to lack optically active NV centers. In this paper, we have systematically studied representative classes NDs produced by detonation shock wave conversion different carbon precursor materials, namely,...
Diamond properties down to the quantum-size region are still poorly understood. High-pressure high-temperature (HPHT) synthesis from chloroadamantane molecules allows precise control of nanodiamond size. Thermal stability and optical nanodiamonds with sizes spanning range <1 8 nm investigated. It is shown that existing hypothesis about enhanced thermal smaller than 2 incorrect. The most striking feature in IR absorption these samples appearance an transmission band near diamond Raman mode...
X-ray absorption experiments at Ce L<sub>3</sub> and M<sub>5</sub> edges theoretical calculations demonstrate that in addition to the nanoceria charge stability, formation of hydroxyl groups surface affects chemical performance nanomaterials.
Abstract Copper and its alloys are among the most used metals for industry. However, using bare copper in technology is compromised because corrosion poor abrasion resistance of impacts performance industrial technological applications. In this paper, a strategy based on combining laser chemical modification metal's surface controlled atmosphere texturing, followed by chemisorption low energy compounds effectively fabrication superhydrophobic coating with enhanced protective functional...
A new uranium(V) silicate, K3(U3O6)(Si2O7), and the germanate analogue, Rb3(U3O6)(Ge2O7), have been synthesized under high-temperature, high-pressure hydrothermal conditions characterized by single-crystal X-ray diffraction. Their structures contain uranate columns formed of triple octahedral chains alpha-UF5 type linked disilicate (or digermanate) units to form a 3-D framework structure. The valence state uranium is confirmed photoelectron spectroscopy, absorption magnetic susceptibility.
Two novel properties, unique for semiconductors, a negative electron affinity and high p-type surface electrical conductivity, were discovered in diamond at the end of last century. Both properties appear when is hydrogenated. A natural question arises: influence hydrogen on limited only to properties? Here, first time our knowledge, we observe transparency peak 1328 cm-1 infrared absorption hydrogen-terminated pure (undoped) nanodiamonds. This new optical property ascribed Fano-type...
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...
Planar MOFs grow on graphene oxide templates.
Investigation of the properties trivalent light actinide compounds is hindered by their low stability under normal conditions. In this study, An3+ double sulfates Cs[An(SO4)2(H2O)3]·H2O (An = U, Np, Pu, or Am) were synthesized and characterized complementary methods. Their structure was solved using single-crystal X-ray diffraction (XRD), peculiarities sulfate anion environment addressed with vibrational spectroscopy. The oxidation states actinides confirmed absorption near edge spectroscopy...