Synthesis and characterization of biocompatible-nanohydroxyapatite crystals obtained by a modified sol-gel processing
| Autor: | Rodrigo González-Tenorio, Carlos Flores-Morales, M. Cristina Piña-Barba, O. Novelo-Peralta, Ignacio A. Figueroa |
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| Rok vydání: | 2012 |
| Předmět: |
Time Factors
Materials science Scanning electron microscope Biomedical Engineering Medicine (miscellaneous) Mineralogy Nanoparticle Biocompatible Materials Phase Transition law.invention Biomaterials Microscopy Electron Transmission nanocrystals law Report Materials Testing sol-gel Pentoxide Colloids Crystallization Sol-gel Nitrates Temperature hydroxyapatite General Medicine Calcium Compounds Phosphorus Compounds Nanocrystalline material Nanostructures X-ray diffraction Transmission electron microscopy X-ray crystallography Microscopy Electron Scanning Solvents Nanoparticles Hydroxyapatites Powders Nuclear chemistry |
| Zdroj: | Biomatter |
| ISSN: | 2159-2535 |
| DOI: | 10.4161/biom.20379 |
| Popis: | A modified sol-gel process for synthesizing nanocrystalline hydroxyapatite powders (nHA) for biomedical applications, using tetrahydrated calcium nitrate [Ca(NO(3))(2)∙4H(2)O] and phosphorous pentoxide [P(2)O(5)] as precursor, is presented and discussed. The powders were washed and heat-treated at different temperatures and then characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The total process time reached with this modified process was less than 16 h. The results showed that there was an increment in size of the HA nanocrystals (nHA) when treated at different temperatures, ranging from 30 nm for the sample treated at 600°C to 500 nm for the sample heat-treated at 1,200°C. |
| Databáze: | OpenAIRE |
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