A5044734899- Nuclear materials and radiation effects
- Luminescence Properties of Advanced Materials
- Thermal and Kinetic Analysis
- Fullerene Chemistry and Applications
- Biofuel production and bioconversion
- Multiferroics and related materials
- Carbon Nanotubes in Composites
- Pigment Synthesis and Properties
- Enzyme Production and Characterization
- X-ray Diffraction in Crystallography
- Advanced Condensed Matter Physics
- Nuclear Materials and Properties
- Microbial Metabolic Engineering and Bioproduction
- Ferroelectric and Piezoelectric Materials
- Glass properties and applications
- Zeolite Catalysis and Synthesis
- Enzyme Catalysis and Immobilization
- Radioactive element chemistry and processing
- Magnetic Properties and Synthesis of Ferrites
- Catalysis and Oxidation Reactions
- Innovative Microfluidic and Catalytic Techniques Innovation
- Transition Metal Oxide Nanomaterials
- Crystal Structures and Properties
- Hydrogen Storage and Materials
- Solid-state spectroscopy and crystallography
Ioffe Institute
2017-2024
St. Petersburg State Technological Institute
2007-2024
Physico-Technical Institute
2021
Al-Farabi Kazakh National University
2017
Federal Center Research Fundamentals of Biotechnology
2016
Russian Academy of Sciences
2016
A N Bach Institute of Biochemistry
2015
Moscow State University
2013-2014
ET Enterprises (United Kingdom)
2011
St Petersburg University
2008
The paper deals with a study of the effect which hydrothermal fluid pH has on formation pyrochlore-structured phase in Bi 2 O 3 -Fe -WO system.It was shown that at 1 and 8, particles crystallite sizes 38 118 nm, respectively, is accompanied by WO 6 compound Aurivillius structure.At values from to 7, only nanocrystalline variable composition are formed.Under these conditions, dependence average size crystallites extreme, as increases ∼ 67 nm up 126 5 then decreases 102 7. samples obtained 3-4...
The minimum crystallite size in a group of oxides has been analyzed as function their synthesis conditions, critical nucleus and the crystal structure parameters.Nanocrystals were synthesized by solution combustion, hydrothermal heat treatment air precipitated hydroxides.Aluminum iron oxides, titania zirconia, cobalt ferrite, AFeO 3 ferrites (A = Bi, RE), Aurivillius phases Bi m+1 Ti Fe m-3 O 3m+3 (m -9), well solid solutions based on these chosen objects study.The presence correlation...
The influence of the coprecipitation bismuth and iron hydroxides in microreactors various types on formation nanocrystalline orthoferrite during heat treatment deposit was described.Free impinging-jets microreactor, microreactor with submerged jets, intensively swirling flows were used.It revealed that smallest weighted average crystallite size 12 nm is formed when a tangentially reagent solutions used for hydroxides.The minimum BiFeO 3 crystallites according to transmission electron...
A free impinging-jets microreactor was used for synthesizing rhabdophane-structured LaPO 4 sols.The rheological behavior investigated the sols obtained both by reagents mixing in a microreactor, and pouring initial solutions together them on magnetic stirrer.Lanthanum phosphate two ways are structured systems characterized deformation accompanied shear liquefaction.Some discovered anomalies were found to be associated with flow nonequilibrium at low rates, which indirectly indicates stronger...
A systematic analysis of literature data concerning the influence methods and conditions synthesis on possibility self-organization particle growth restrictions during chemical reactions solid phase has been conducted.The prospects using such to obtain nano-crystalline phases are shown.It is demonstrated that a disadvantage risk forming precursor instead target products.To avoid an outcome, several proposed.Based data, examples transformation nanoparticles into nanocrystals classified...
The structure, formed by polyhydroxylated fullerene (fullerenol), impregnated into a flexible transparent matrix, was studied NMR method. As host material water-soluble polymer - polyvinyl alcohol used. concentration of filling compound almost at maximum permissible value in order to provide intense signal nuclear spin system C <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">60</sub> molecules. observed <sup...
In this work, hydroxide deposition in a microreactor with intensively swirling flows was used to obtain BiFeO 3 , followed by heat treatment of co-precipitated bismuth and iron hydroxides.The study the formation nanocrystalline orthoferrite carried out using set methods: EDXMA, TEM, XRD, 57 Fe M össbauer spectroscopy, DRS, etc.The photocatalytic activity magnetic characteristics material were determined.It is shown that during precipitation for 1 minute at temperature 530 • C, nanocrystals...