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https://ri.ufs.br/jspui/handle/riufs/24777| Document Type: | Artigo |
| Title: | Crystallographic aspects regarding the insertion of Ag+ ions into a hydroxyapatite structure |
| Authors: | Santos, Ivory Marcos Gomes dos Barbosa, Larissa Souza Noel Simas Resende, Cristiane Xavier Soares, Glória de Almeida Santos, Euler Araujo dos |
| Issue Date: | 2015 |
| Resumo : | The objective of this study was to evaluate how silver can be inserted into hydroxyapatite (HA) via two distinct processes: co-doping with CO32- via precipitation in an aqueous medium and immersion of preformed HA crystals into Ag+ solutions. It was concluded that although Ag+ and Ca2+ have different radii, the accommodation of Ag+ ions in the Ca2+ sites of the hydroxyapatite lattice can be explained by the models proposed for inserting monovalent ions such as Na+. In this case, because Ag+ ions are larger than Ca2+ ions and have a different charge, the Ag+ ions are stabilized in the HA structure by co-substitution with CO32- ions in both the A- and B-type sites. This simultaneous insertion of Ag+ and CO32- appears to thermally stabilize the HA phase because no phase transformation is observed after calcination. In addition, the doping of HA with Ag+ ions can clearly occur via two routes: co-precipitation in the presence of these ions or diffusion in preformed hydroxyapatite crystals. This result appears to indicate the possibility of doping HA with Ag+ using less complex routes at ambient temperature and with prefabricated implants or biomaterials, which reduces the costs of producing devices with antibacterial effects. |
| Keywords: | Hydroxyapatite Silver Doping Carbonate Diffusion |
| ISSN: | 1980-5373 |
| Is part of: | Materials Research |
| Language: | eng |
| Publisher / Institution : | Associação Brasileira de Metalurgia, Materiais e Mineração (ABM) / Associação Brasileira de Cerâmica (ABC) / Associação Brasileira de Polímeros (ABPol) |
| Citation: | SANTOS, I. M. G. et al. Crystallographic aspects regarding the insertion of Ag+ ions into a hydroxyapatite structure. Materials Research, São Carlos, v. 18, n. 4, p. 881–890, 2015. Disponível em: https://www.scielo.br/j/mr/a/HMpbcPsdvn7qFGwB9yc8jcR/?lang=en. Acesso em: 13 mar. 2026. |
| License: | Creative Commons Atribuição 4.0 Internacional (CC BY 4.0) |
| Identifier: | https://doi.org/10.1590/1516-1439.012515 |
| URI: | https://ri.ufs.br/jspui/handle/riufs/24777 |
| Appears in Collections: | P2CEM - Artigos de periódicos |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| CrystallographicAspectsInsertionAgIons.pdf | 3,17 MB | Adobe PDF |  View/Open |
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