A5038143579- Catalytic Processes in Materials Science
- Mesoporous Materials and Catalysis
- Material Dynamics and Properties
- Polymer Nanocomposites and Properties
- Iron oxide chemistry and applications
- Surface Modification and Superhydrophobicity
- Hydrogels: synthesis, properties, applications
- Polymer Surface Interaction Studies
- Adsorption and biosorption for pollutant removal
- Analytical Chemistry and Chromatography
- Aerogels and thermal insulation
- Advanced Sensor and Energy Harvesting Materials
- Surfactants and Colloidal Systems
- Electrostatics and Colloid Interactions
- TiO2 Photocatalysis and Solar Cells
- Zeolite Catalysis and Synthesis
- Analytical Chemistry and Sensors
- NMR spectroscopy and applications
- Minerals Flotation and Separation Techniques
- Catalysis and Oxidation Reactions
- Nanomaterials for catalytic reactions
- Catalysts for Methane Reforming
- Spectroscopy and Quantum Chemical Studies
- nanoparticles nucleation surface interactions
- biodegradable polymer synthesis and properties
Institute of Agrophysics, Polish Academy of Sciences
2024
F.D. Ovcharenko Institute of Biocolloidal Chemistry
2019-2024
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”
2021-2024
Chuiko Institute of Surface Chemistry
2013-2022
National Academy of Sciences of Ukraine
2000-2022
Palladin Institute of Biochemistry
2002
Maria Curie-Skłodowska University
2002
This paper presents the fabrication of hydrophobic polymer nanomaterials with improved thermal characteristics based on MWCNTs and poly(dimethylsiloxane). The samples were synthesized by physical adsorption poly(dimethylsiloxane) onto P-MWCNTs surfaces in amount from 5 to 20 wt%. effect different content adsorbed structure properties prepared nanocomposites was studied detail using ATR-FTIR, SEM, TEM, XRD RS techniques. XPS results showed that increase PDMS surfaces, Si 2p atomic percentage...
A series of composites based on nanohydroxyapatite (nHAp) and natural polysaccharides (PS) (nHAp/agar, nHAp/chitosan, nHAp/pectin FB300, APA103, nHAp/sodium alginate) was synthesized by liquid-phase two-step method characterized using nitrogen adsorption-desorption, DSC, TG, FTIR spectroscopy, SEM. The analysis adsorption-desorption data shows that with a nHAp: PS ratio 4:1 exhibit sufficiently high specific surface area from 49 to 82 m2/g. incremental pore size distributions indicate mainly...
The nanostructure of poly(acrylic acid) (PAA) adsorption layer on the surface mesoporous-activated carbon HPA obtained by physical activation residue after supercritical extraction hops was characterized. This characterization has been done based analysis determination adsorbed polymer amount, charge density, and zeta potential solid particles (without in PAA presence). SEM, thermogravimetric, FTIR, MS techniques have allowed one to examine morphology specify different kinds groups. effects...
This study deals with effects on structure, molecular mobility, and interfacial polymer–nanoparticles (NPs), arising from modification of silica NPs by grafting small polydimethylsiloxane (PDMS) chains, via siloxane bond breaking, in combination polymer weight, Wm, both below above the entanglement threshold (Wm,e ≈ 8k). According to infrared (IR), upon PDMS, coverage surface hydroxyls is almost complete (100%) uniform for short whereas it lower, ∼60%, longer chains (non-uniform). The...
The novel organic-inorganic biohybrid composite adsorbent was synthesized based on nanosized silica-titania modified with alginate within the development of effective for heavy metal ions. Effects species Cu(II), Zn(II), Cd(II), and Pb(II); concentrations; pH; temperature; adsorption onto titania-coated silica (ST20) initial or by sodium (ST20-ALG) were studied. equilibrium kinetic data ions analyzed using Langmuir Freundlich models models: pseudo first order, second intraparticle model,...
A series of TiO2–ZrO2/SiO2 nanocomposites were synthesized using a liquid-phase method and characterized by various techniques, namely, nitrogen adsorption–desorption, X-ray diffraction (XRD), photoelectron spectroscopy (XPS), Raman spectroscopy, high-resolution transmission electron microscopy, photon correlation (PCS). It was revealed that the component ratio calcination temperature affect phase composition nanocomposites. Composites TiZrSi1 (TiO2:ZrO2:SiO2 = 3:10:87) TiZrSi2 (10:10:80)...
Pristine fumed silica and powders with dried residuals of centrifuged aqueous suspensions silica, silica/PVP, or silica/protein were studied using nitrogen adsorption IR spectroscopy methods. The added polymers, surfactant, ethanol investigated by means photon correlation spectroscopy, 1H NMR, impact polymers on the suspension powder characteristics depends mechanism conformation polymer molecules (globular unfolded) due to strong weak intramolecular interactions. Globular proteins...
SiO2@PDMS and CeO2-ZrO2-SiO2@PDMS nanocomposites were prepared studied using nitrogen adsorption-desorption, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), measurements of advancing receding contact angles with water, microcalorimetry. The pore size distributions indicate that the textural characteristics change after oxide modification by poly(dimethylsiloxane) (PDMS). Composites are characterized mainly mesoporosity macroporosity aggregates...
Recently, considering the potential applications of hydrogel nanocomposites in biomedical engineering, there has been a growing interest synthesis hydrogels with improved mechanical properties. Among magnetic materials, iron oxides are particular due to their properties and biocompatibility. At same time, LAPONITE®, synthetic clay, can be used improve polymer-based nanocomposites. In this study we report effects composition structure on its thermoresponsive sorption release model anticancer...
New hybrid hydrogel composites based on a mixture of natural polysaccharides (sodium alginate, κ-carrageenan, and chitosan) filled with the clay mineral origin, montmorillonite (MMT), were studied. The structure intercalated/flocculated MMT distribution in interpenetrating network polysaccharide matrix was characterized using FTIR, X-ray diffraction, SEM techniques. Swelling kinetics investigated weight analysis, whereas phase transition water composition hydrogels, by DSC method. Their...