Spectroscopic and structural properties of CeO2 nanocrystals doped with La3+, Nd3+ and modified on their surface with Ag nanoparticles
The purpose of this work is to present our efforts focused on applications of chemical synthesis of nanocrystalline cerium dioxide (CeO2) powders doped with La3+ ions and CeO2:Nd3+ modified, on their surface, with Ag nanoparticles (NPs). The synthesized powders were examined by X-ray powder diffract...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-05-01
|
| Series: | Heliyon |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844021010616 |
| _version_ | 1819090043048820736 |
|---|---|
| author | Monika Michalska Karol Lemański Andrzej Sikora |
| author_facet | Monika Michalska Karol Lemański Andrzej Sikora |
| author_sort | Monika Michalska |
| collection | DOAJ |
| description | The purpose of this work is to present our efforts focused on applications of chemical synthesis of nanocrystalline cerium dioxide (CeO2) powders doped with La3+ ions and CeO2:Nd3+ modified, on their surface, with Ag nanoparticles (NPs). The synthesized powders were examined by X-ray powder diffraction (XRD), absorption, emission spectroscopy, scanning electron (SEM) and atomic force microscopy (AFM). The relations between crystallographic properties and stability of CeO2 compounds doped by La ions and surface-modified by Ag were studied. XRD patterns revealed that all studied samples are single-phase and crystallized in the cubic fluorite-type structure, in space group Fm-3m. The average crystallite sizes estimated by Rietveld method of series: La-doped CeO2 were in the range of 7–14 nm, and CeO2:1%Nd3+/n-Ag (n: 1- 5wt.%) were found to be in the range of 29–34 nm, respectively. The lattice parameter a for La-doped CeO2 powders varying from 5.416 to 5.482 Å with increasing content of La3+ ions from 0 to 20wt.%, respectively. For series of CeO2:Nd3+/n-Ag materials lattice parameter a was at the same level and in accordance with the standard value a0 = 5.411 Å (ICDD - 43-1002). The SEM and AFM observations depicted the grainy structure of all obtained CeO2-powder samples. The estimated grain size ranged from 50 to 500 nm. The diverse grain shapes and packing was remarked in the samples. According to our knowledge, the relationship between the structural, spectroscopic and morphological characteristics of CeO2 samples was presented in this work for the first time. |
| first_indexed | 2024-12-21T22:17:33Z |
| format | Article |
| id | doaj.art-97e749b34a5e46d691cf5350237bdfb8 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-12-21T22:17:33Z |
| publishDate | 2021-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-97e749b34a5e46d691cf5350237bdfb82022-12-21T18:48:25ZengElsevierHeliyon2405-84402021-05-0175e06958Spectroscopic and structural properties of CeO2 nanocrystals doped with La3+, Nd3+ and modified on their surface with Ag nanoparticlesMonika Michalska0Karol Lemański1Andrzej Sikora2Łukasiewicz Research Network - Institute of Microelectronics and Photonics, Al. Lotników 32/46, 02-668 Warsaw, Poland; Department of Chemistry, Faculty of Materials Science and Technology, VŠB-Technical University of Ostrava, 17. Listopadu 15/2172, 708 00 Ostrava-Poruba, Czech Republic; Corresponding author.Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, PolandFaculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, Janiszewskiego 11/17, 50-372 Wrocław, PolandThe purpose of this work is to present our efforts focused on applications of chemical synthesis of nanocrystalline cerium dioxide (CeO2) powders doped with La3+ ions and CeO2:Nd3+ modified, on their surface, with Ag nanoparticles (NPs). The synthesized powders were examined by X-ray powder diffraction (XRD), absorption, emission spectroscopy, scanning electron (SEM) and atomic force microscopy (AFM). The relations between crystallographic properties and stability of CeO2 compounds doped by La ions and surface-modified by Ag were studied. XRD patterns revealed that all studied samples are single-phase and crystallized in the cubic fluorite-type structure, in space group Fm-3m. The average crystallite sizes estimated by Rietveld method of series: La-doped CeO2 were in the range of 7–14 nm, and CeO2:1%Nd3+/n-Ag (n: 1- 5wt.%) were found to be in the range of 29–34 nm, respectively. The lattice parameter a for La-doped CeO2 powders varying from 5.416 to 5.482 Å with increasing content of La3+ ions from 0 to 20wt.%, respectively. For series of CeO2:Nd3+/n-Ag materials lattice parameter a was at the same level and in accordance with the standard value a0 = 5.411 Å (ICDD - 43-1002). The SEM and AFM observations depicted the grainy structure of all obtained CeO2-powder samples. The estimated grain size ranged from 50 to 500 nm. The diverse grain shapes and packing was remarked in the samples. According to our knowledge, the relationship between the structural, spectroscopic and morphological characteristics of CeO2 samples was presented in this work for the first time.http://www.sciencedirect.com/science/article/pii/S2405844021010616Cerium dioxideCeO2Silver nanoparticlesLanthanidesSpectroscopy |
| spellingShingle | Monika Michalska Karol Lemański Andrzej Sikora Spectroscopic and structural properties of CeO2 nanocrystals doped with La3+, Nd3+ and modified on their surface with Ag nanoparticles Heliyon Cerium dioxide CeO2 Silver nanoparticles Lanthanides Spectroscopy |
| title | Spectroscopic and structural properties of CeO2 nanocrystals doped with La3+, Nd3+ and modified on their surface with Ag nanoparticles |
| title_full | Spectroscopic and structural properties of CeO2 nanocrystals doped with La3+, Nd3+ and modified on their surface with Ag nanoparticles |
| title_fullStr | Spectroscopic and structural properties of CeO2 nanocrystals doped with La3+, Nd3+ and modified on their surface with Ag nanoparticles |
| title_full_unstemmed | Spectroscopic and structural properties of CeO2 nanocrystals doped with La3+, Nd3+ and modified on their surface with Ag nanoparticles |
| title_short | Spectroscopic and structural properties of CeO2 nanocrystals doped with La3+, Nd3+ and modified on their surface with Ag nanoparticles |
| title_sort | spectroscopic and structural properties of ceo2 nanocrystals doped with la3 nd3 and modified on their surface with ag nanoparticles |
| topic | Cerium dioxide CeO2 Silver nanoparticles Lanthanides Spectroscopy |
| url | http://www.sciencedirect.com/science/article/pii/S2405844021010616 |
| work_keys_str_mv | AT monikamichalska spectroscopicandstructuralpropertiesofceo2nanocrystalsdopedwithla3nd3andmodifiedontheirsurfacewithagnanoparticles AT karollemanski spectroscopicandstructuralpropertiesofceo2nanocrystalsdopedwithla3nd3andmodifiedontheirsurfacewithagnanoparticles AT andrzejsikora spectroscopicandstructuralpropertiesofceo2nanocrystalsdopedwithla3nd3andmodifiedontheirsurfacewithagnanoparticles |