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Polymer Nanocomposite Containing Palladium Nanoparticles: Synthesis, Characterization, and Properties
Composite nanomaterials have been prepared through thermal decomposition of palladium diacetate. The composite contains palladium nanoparticles embedded in high-pressure polyethylene. The materials were studied by a number of different physico-chemical methods, such as transmission electron microsco...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9503152/ https://www.ncbi.nlm.nih.gov/pubmed/36145940 http://dx.doi.org/10.3390/polym14183795 |
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author | Yurkov, Gleb Koksharov, Yury Fionov, Alexander Taratanov, Nikolai Kolesov, Vladimir Kirillov, Vladislav Makeev, Mstislav Mikhalev, Pavel Ryzhenko, Dmitriy Solodilov, Vitaliy |
author_facet | Yurkov, Gleb Koksharov, Yury Fionov, Alexander Taratanov, Nikolai Kolesov, Vladimir Kirillov, Vladislav Makeev, Mstislav Mikhalev, Pavel Ryzhenko, Dmitriy Solodilov, Vitaliy |
author_sort | Yurkov, Gleb |
collection | PubMed |
description | Composite nanomaterials have been prepared through thermal decomposition of palladium diacetate. The composite contains palladium nanoparticles embedded in high-pressure polyethylene. The materials were studied by a number of different physico-chemical methods, such as transmission electron microscopy, X-ray diffraction, X-ray absorption spectroscopy, electron paramagnetic resonance, and EXAFS. The average size of the nanoparticles is 7.0 ± 0.5 nm. It is shown that with the decrease of metal content in the polymer matrix the average size of nanoparticles decreased from 7 to 6 nm, and the coordination number of palladium also decreased from 7 to 5.7. The mean size of palladium particles increases with the growing concentration of palladium content in the matrix. It is shown that the electrophysical properties of the material obtained depend on the filler concentration. The chemical composition of palladium components includes metallic palladium, palladium (III) oxide, and palladium dioxide. All samples have narrow lines (3–5 Oe) with a g factor of around two in the electron paramagnetic resonance (EPR) spectra. It is shown that EPR lines have uneven boarding by saturation lines investigation. The relaxation component properties are different for spectral components. It leads to the spectrum line width depending on the magnetic field value. At first approximation, the EPR spectra can be described as a sum of two Lorentzian function graphs, corresponding to the following two paramagnetic centers: one is on the surface, and one is inside the palladium particles. Some of the experimental characteristics were measured for the first time. The data obtained indicate interesting properties of palladium-based nanocomposites, which will be useful for obtaining products based on these materials. |
format | Online Article Text |
id | pubmed-9503152 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-95031522022-09-24 Polymer Nanocomposite Containing Palladium Nanoparticles: Synthesis, Characterization, and Properties Yurkov, Gleb Koksharov, Yury Fionov, Alexander Taratanov, Nikolai Kolesov, Vladimir Kirillov, Vladislav Makeev, Mstislav Mikhalev, Pavel Ryzhenko, Dmitriy Solodilov, Vitaliy Polymers (Basel) Article Composite nanomaterials have been prepared through thermal decomposition of palladium diacetate. The composite contains palladium nanoparticles embedded in high-pressure polyethylene. The materials were studied by a number of different physico-chemical methods, such as transmission electron microscopy, X-ray diffraction, X-ray absorption spectroscopy, electron paramagnetic resonance, and EXAFS. The average size of the nanoparticles is 7.0 ± 0.5 nm. It is shown that with the decrease of metal content in the polymer matrix the average size of nanoparticles decreased from 7 to 6 nm, and the coordination number of palladium also decreased from 7 to 5.7. The mean size of palladium particles increases with the growing concentration of palladium content in the matrix. It is shown that the electrophysical properties of the material obtained depend on the filler concentration. The chemical composition of palladium components includes metallic palladium, palladium (III) oxide, and palladium dioxide. All samples have narrow lines (3–5 Oe) with a g factor of around two in the electron paramagnetic resonance (EPR) spectra. It is shown that EPR lines have uneven boarding by saturation lines investigation. The relaxation component properties are different for spectral components. It leads to the spectrum line width depending on the magnetic field value. At first approximation, the EPR spectra can be described as a sum of two Lorentzian function graphs, corresponding to the following two paramagnetic centers: one is on the surface, and one is inside the palladium particles. Some of the experimental characteristics were measured for the first time. The data obtained indicate interesting properties of palladium-based nanocomposites, which will be useful for obtaining products based on these materials. MDPI 2022-09-10 /pmc/articles/PMC9503152/ /pubmed/36145940 http://dx.doi.org/10.3390/polym14183795 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yurkov, Gleb Koksharov, Yury Fionov, Alexander Taratanov, Nikolai Kolesov, Vladimir Kirillov, Vladislav Makeev, Mstislav Mikhalev, Pavel Ryzhenko, Dmitriy Solodilov, Vitaliy Polymer Nanocomposite Containing Palladium Nanoparticles: Synthesis, Characterization, and Properties |
title | Polymer Nanocomposite Containing Palladium Nanoparticles: Synthesis, Characterization, and Properties |
title_full | Polymer Nanocomposite Containing Palladium Nanoparticles: Synthesis, Characterization, and Properties |
title_fullStr | Polymer Nanocomposite Containing Palladium Nanoparticles: Synthesis, Characterization, and Properties |
title_full_unstemmed | Polymer Nanocomposite Containing Palladium Nanoparticles: Synthesis, Characterization, and Properties |
title_short | Polymer Nanocomposite Containing Palladium Nanoparticles: Synthesis, Characterization, and Properties |
title_sort | polymer nanocomposite containing palladium nanoparticles: synthesis, characterization, and properties |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9503152/ https://www.ncbi.nlm.nih.gov/pubmed/36145940 http://dx.doi.org/10.3390/polym14183795 |
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