Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide Nanoparticles
Dielectric, magnetic and Raman measurements of cerium oxide nanoparticles obtained by the precipitation method are discussed. Morphological study was performed by scanning electron microscopy, confirming the formation of nanoparticles of 5–27 nm. The Raman spectra exhibited a strong band around 465...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/23/22/13883 |
| _version_ | 1797465158984925184 |
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| author | Nicusor Fifere Anton Airinei Mihai Asandulesa Aurelian Rotaru Elena Laura Ursu Florica Doroftei |
| author_facet | Nicusor Fifere Anton Airinei Mihai Asandulesa Aurelian Rotaru Elena Laura Ursu Florica Doroftei |
| author_sort | Nicusor Fifere |
| collection | DOAJ |
| description | Dielectric, magnetic and Raman measurements of cerium oxide nanoparticles obtained by the precipitation method are discussed. Morphological study was performed by scanning electron microscopy, confirming the formation of nanoparticles of 5–27 nm. The Raman spectra exhibited a strong band around 465 cm<sup>−1</sup>, corresponding to the symmetrical stretching mode of the Ce-O8 vibrational unit. The nature of the room temperature ferromagnetism of cerium oxide nanoparticles was analyzed, taking into account the oxygen defects at the surface or interface of the nanoparticles. The evolution of dielectric constant, ε′, and dielectric loss, ε″ was studied as a function of frequency at different temperatures. Additionally, the variation of the electric conductivity versus temperature was investigated. Finally, complex impedance study of the cerium oxide nanoparticles was performed. |
| first_indexed | 2024-03-09T18:17:35Z |
| format | Article |
| id | doaj.art-4d85271cdacf4fedba88f2027ca6d460 |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-09T18:17:35Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-4d85271cdacf4fedba88f2027ca6d4602023-11-24T08:34:59ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-11-0123221388310.3390/ijms232213883Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide NanoparticlesNicusor Fifere0Anton Airinei1Mihai Asandulesa2Aurelian Rotaru3Elena Laura Ursu4Florica Doroftei5Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, RomaniaPetru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, RomaniaPetru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, RomaniaFaculty of Electrical Engineering and Computer Science & MANSiD Research Center, Stefan cel Mare University, 13 Str. Universitatii, 720229 Suceava, RomaniaPetru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, RomaniaPetru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, RomaniaDielectric, magnetic and Raman measurements of cerium oxide nanoparticles obtained by the precipitation method are discussed. Morphological study was performed by scanning electron microscopy, confirming the formation of nanoparticles of 5–27 nm. The Raman spectra exhibited a strong band around 465 cm<sup>−1</sup>, corresponding to the symmetrical stretching mode of the Ce-O8 vibrational unit. The nature of the room temperature ferromagnetism of cerium oxide nanoparticles was analyzed, taking into account the oxygen defects at the surface or interface of the nanoparticles. The evolution of dielectric constant, ε′, and dielectric loss, ε″ was studied as a function of frequency at different temperatures. Additionally, the variation of the electric conductivity versus temperature was investigated. Finally, complex impedance study of the cerium oxide nanoparticles was performed.https://www.mdpi.com/1422-0067/23/22/13883cerium oxide nanoparticlesraman spectroscopy magnetic propertiesdielectric propertiesNyquist plotsantioxidant activity |
| spellingShingle | Nicusor Fifere Anton Airinei Mihai Asandulesa Aurelian Rotaru Elena Laura Ursu Florica Doroftei Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide Nanoparticles International Journal of Molecular Sciences cerium oxide nanoparticles raman spectroscopy magnetic properties dielectric properties Nyquist plots antioxidant activity |
| title | Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide Nanoparticles |
| title_full | Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide Nanoparticles |
| title_fullStr | Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide Nanoparticles |
| title_full_unstemmed | Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide Nanoparticles |
| title_short | Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide Nanoparticles |
| title_sort | investigating the vibrational magnetic and dielectric properties and antioxidant activity of cerium oxide nanoparticles |
| topic | cerium oxide nanoparticles raman spectroscopy magnetic properties dielectric properties Nyquist plots antioxidant activity |
| url | https://www.mdpi.com/1422-0067/23/22/13883 |
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