Sergey Dubkov

ORCID: 0000-0003-1507-8807
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Research Areas
  • Carbon Nanotubes in Composites
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Advanced Photocatalysis Techniques
  • TiO2 Photocatalysis and Solar Cells
  • Diamond and Carbon-based Materials Research
  • Graphene research and applications
  • Laser-Ablation Synthesis of Nanoparticles
  • Multiferroics and related materials
  • nanoparticles nucleation surface interactions
  • Gas Sensing Nanomaterials and Sensors
  • Catalytic Processes in Materials Science
  • Ferroelectric and Piezoelectric Materials
  • Magnetic and transport properties of perovskites and related materials
  • Catalysts for Methane Reforming
  • Copper-based nanomaterials and applications
  • Quantum Dots Synthesis And Properties
  • Catalysis and Oxidation Reactions
  • Ion-surface interactions and analysis
  • Nanomaterials and Printing Technologies
  • Nonlinear Optical Materials Studies
  • Catalysis and Hydrodesulfurization Studies
  • Fullerene Chemistry and Applications
  • Semiconductor materials and devices
  • Advanced Sensor and Energy Harvesting Materials
  • Advanced Condensed Matter Physics

National Research University of Electronic Technology
2014-2024

Research and Production Complex Technological Centre
2013-2019

Moscow Power Engineering Institute
2018

Moscow Aviation Institute
2018

Moscow State Institute of Electronics and Mathematics
2009-2011

Abstract We studied magnetostatic response of the Bi 0.9 La 0.1 FeO 3 – KBr composites (BLFO-KBr) consisting nanosized (≈100 nm) ferrite (BLFO) conjugated with fine grinded ionic conducting KBr. When fraction is rather small (less than 15 wt%) magnetic composite very weak and similar to that observed for BLFO (pure matrix without 1-x x has no as anticipated). However, when increases above 15%, changes substantially field dependence magnetization reveals ferromagnetic-like hysteresis loop a...

10.1038/s41598-019-46834-0 article EN cc-by Scientific Reports 2019-07-18

Abstract A series of TiO 2 photocatalysts loaded with various metals (Pt, Pd, Ni, and Cu) were prepared by using the wet impregnation method. Their physicochemical properties studied XRD, BET, TPR-H , FTIR TPD-NH 3 /CO techniques. The photocatalytic activity samples was investigated in gas-phase reduction carbon dioxide under continuous flow operation mode. Among all catalysts, Pt Ni most active terms formation rate methanol. In general, modified decreased increasing metal loading reaction...

10.1007/s11244-020-01241-y article EN cc-by Topics in Catalysis 2020-02-15

Copper and gold doped copper catalysts supported on multi-walled carbon nanotubes were prepared by wet impregnation deposition–precipitation methods, respectively.

10.1039/c5cy01667c article EN cc-by-nc Catalysis Science & Technology 2016-01-01

In order to expand the spectral capabilities of SERS method, Ag–Cu alloy nanoparticle arrays were studied. Arrays nanoparticles formed by vacuum thermal evaporation and condensation on an unheated substrate followed heat treatment at 230 °C. A higher Raman scattering enhancement in red region spectrum when using array eutectic system was found. This is comparable one pure silver particle blue spectrum. Transmission electron microscopy study has shown that feature many particles are...

10.1016/j.omx.2020.100055 article EN cc-by-nc-nd Optical Materials X 2020-06-22

Multilayer Al-CuO thermite materials are a prominent representative of metastable intermolecular composites, which characterized by outstanding energy and combustion properties. In this work, we investigated the effect total thickness multilayer material (enriched with aluminum), formed on surface sitall substrates, mode morphology reaction products. High-speed video recording from different angles allowed us not only to estimate front propagation velocity, but also visually gas evolution...

10.20944/preprints202501.1455.v1 preprint EN 2025-01-21

Formation of laser-induced periodic surface structures (LIPSS) is known as a fast and robust method functionalization material surfaces. Of particular interest are LIPSS that manifest modulation phase state the material, it implies reversibility modification constitute rewritable LIPSS, recently was demonstrated for chalcogenide change materials (PCMs). Due to remarkable properties PCMs─nonvolatality, prominent optical contrast ns switching speed─such novel hold potential exciting...

10.1021/acsami.4c04573 article EN ACS Applied Materials & Interfaces 2024-07-16

The present study investigates the photocatalytic properties of hydrothermally synthesized TiO2 nanowires (NWs) for CO2 reduction in H2O vapor. It has been demonstrated that NWs, thermally treated at 500–700 °C, demonstrate an almost tenfold higher yield products compared to known commercial powder P25. found best material is a combination anatase, TiO2-B and rutile. product increases with increasing heat treatment temperature NWs. This associated increase degree crystallinity material....

10.3390/nano14161370 article EN cc-by Nanomaterials 2024-08-21

The magnetic properties of BiFeO<sub>3</sub>-based multiferroics are determined by the competition between polarization- and oxygen octahedra rotation-related components Dzyaloshinskii–Moriya interaction.

10.1039/c9tc01521c article EN Journal of Materials Chemistry C 2019-01-01

The photocatalytic activity of TiO2 depends on numerous factors, such as the chemical potential electrons, charge transport properties, band-gap energy, and concentration surface-active sites. A lot research has been dedicated to determining properties that have most significant influence semiconductors. Here, we demonstrated in gas-phase reduction CO2 is governed mainly by desorption rate reaction intermediates final products. This indicates specific surface area binding strength products...

10.3390/catal11010047 article EN Catalysts 2020-12-31

In this study, we developed a filtering material for facial masks, which is capable of trapping and subsequent inactivation bacteria under white light emitting diodes (LED) or sunlight irradiation. Such functionality achieved via the modification composite membrane based on porous polymer with photocatalytic (TiO2) plasmonic (Ag) nanoparticles. The produced by means computer numerical control machine, rolls photoresist/thermoplastic mixture into ~20-µm-thick followed its thermal/ultraviolet...

10.3390/polym15030726 article EN Polymers 2023-01-31

For the first time, it was demonstrated that catalytic properties of semiconductors can be activated using an external electric field only. More particularly, TiO2 and Fe2O3 were found to produce noticeable amounts carbon monoxide from dioxide – water vapor gas mixture under with strength in 104 V/cm range. The reported process, i.e. activation is more efficient than utilization UV–vis radiation terms energy efficiency amount products formed.

10.1016/j.apcata.2022.118541 article EN cc-by-nc-nd Applied Catalysis A General 2022-02-17

A novel biologically active organic ligand L (N'-benzylidenepyrazine-2-carbohydrazonamide) and its three coordination compounds have been synthesized structurally described. Their physicochemical biological properties thoroughly studied. Cu(II), Zn(II), Cd(II) complexes analyzed by F-AAS spectrometry elemental analysis. The way of metal-ligand was discussed based on FTIR spectroscopy UV-VIS-NIR spectrophotometry. thermal behavior investigated studied in the temperature range 25-800 °C. All...

10.3390/ijms23062980 article EN International Journal of Molecular Sciences 2022-03-10
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