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Preparation and Surface Characterization of Cerium Dioxide for Separation of (68)Ge/(68)Ga and Other Medicinal Radionuclides
The overall need for the preparation of new medicinal radionuclides has led to the fast development of new sorption materials, extraction agents, and separation methods. Inorganic ion exchangers, mainly hydrous oxides, are the most widely used materials for the separation of medicinal radionuclides....
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10004219/ https://www.ncbi.nlm.nih.gov/pubmed/36902874 http://dx.doi.org/10.3390/ma16051758 |
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author | Ondrák Fialová, Kateřina Adámek, Kryštof Vlk, Martin Drtinová, Barbora Štamberg, Karel Šebesta, Ferdinand Šlouf, Miroslav Kozempel, Ján |
author_facet | Ondrák Fialová, Kateřina Adámek, Kryštof Vlk, Martin Drtinová, Barbora Štamberg, Karel Šebesta, Ferdinand Šlouf, Miroslav Kozempel, Ján |
author_sort | Ondrák Fialová, Kateřina |
collection | PubMed |
description | The overall need for the preparation of new medicinal radionuclides has led to the fast development of new sorption materials, extraction agents, and separation methods. Inorganic ion exchangers, mainly hydrous oxides, are the most widely used materials for the separation of medicinal radionuclides. One of the materials that has been studied for a long time is cerium dioxide, a competitive sorption material for the broadly used titanium dioxide. In this study, cerium dioxide was prepared through calcination of ceric nitrate and fully characterized using X-ray powder diffraction (XRPD), infrared spectrometry (FT-IR), scanning and transmission electron microscopy (SEM and TEM), thermogravimetric and differential thermal analysis (TG and DTA), dynamic light scattering (DLS), and analysis of surface area. In order to estimate the sorption mechanism and capacity of the prepared material, characterization of surface functional groups was carried out using acid-base titration and mathematical modeling. Subsequently, the sorption capacity of the prepared material for germanium was measured. It can be stated that the prepared material is prone to exchange anionic species in a wider range of pH than titanium dioxide. This characteristic makes the material superior as a matrix in (68)Ge/(68)Ga radionuclide generators, and its suitability should be further studied in batch, kinetic, and column experiments. |
format | Online Article Text |
id | pubmed-10004219 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-100042192023-03-11 Preparation and Surface Characterization of Cerium Dioxide for Separation of (68)Ge/(68)Ga and Other Medicinal Radionuclides Ondrák Fialová, Kateřina Adámek, Kryštof Vlk, Martin Drtinová, Barbora Štamberg, Karel Šebesta, Ferdinand Šlouf, Miroslav Kozempel, Ján Materials (Basel) Article The overall need for the preparation of new medicinal radionuclides has led to the fast development of new sorption materials, extraction agents, and separation methods. Inorganic ion exchangers, mainly hydrous oxides, are the most widely used materials for the separation of medicinal radionuclides. One of the materials that has been studied for a long time is cerium dioxide, a competitive sorption material for the broadly used titanium dioxide. In this study, cerium dioxide was prepared through calcination of ceric nitrate and fully characterized using X-ray powder diffraction (XRPD), infrared spectrometry (FT-IR), scanning and transmission electron microscopy (SEM and TEM), thermogravimetric and differential thermal analysis (TG and DTA), dynamic light scattering (DLS), and analysis of surface area. In order to estimate the sorption mechanism and capacity of the prepared material, characterization of surface functional groups was carried out using acid-base titration and mathematical modeling. Subsequently, the sorption capacity of the prepared material for germanium was measured. It can be stated that the prepared material is prone to exchange anionic species in a wider range of pH than titanium dioxide. This characteristic makes the material superior as a matrix in (68)Ge/(68)Ga radionuclide generators, and its suitability should be further studied in batch, kinetic, and column experiments. MDPI 2023-02-21 /pmc/articles/PMC10004219/ /pubmed/36902874 http://dx.doi.org/10.3390/ma16051758 Text en © 2023 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 Ondrák Fialová, Kateřina Adámek, Kryštof Vlk, Martin Drtinová, Barbora Štamberg, Karel Šebesta, Ferdinand Šlouf, Miroslav Kozempel, Ján Preparation and Surface Characterization of Cerium Dioxide for Separation of (68)Ge/(68)Ga and Other Medicinal Radionuclides |
title | Preparation and Surface Characterization of Cerium Dioxide for Separation of (68)Ge/(68)Ga and Other Medicinal Radionuclides |
title_full | Preparation and Surface Characterization of Cerium Dioxide for Separation of (68)Ge/(68)Ga and Other Medicinal Radionuclides |
title_fullStr | Preparation and Surface Characterization of Cerium Dioxide for Separation of (68)Ge/(68)Ga and Other Medicinal Radionuclides |
title_full_unstemmed | Preparation and Surface Characterization of Cerium Dioxide for Separation of (68)Ge/(68)Ga and Other Medicinal Radionuclides |
title_short | Preparation and Surface Characterization of Cerium Dioxide for Separation of (68)Ge/(68)Ga and Other Medicinal Radionuclides |
title_sort | preparation and surface characterization of cerium dioxide for separation of (68)ge/(68)ga and other medicinal radionuclides |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10004219/ https://www.ncbi.nlm.nih.gov/pubmed/36902874 http://dx.doi.org/10.3390/ma16051758 |
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