Striped, bioactive Ce-TiO2 material with peroxynitrite-scavenging activity
Controlling aligned fiber micro-architectures to simulate the extracellular matrix for inducing important biological functions is a key challenge with regard to successful tissue regeneration. Here we present a bottom-up microemulsion-mediated strategy to obtain highly bioactive and biocompatible, s...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/21636 |
| Acceso en línea: | http://hdl.handle.net/11336/21636 |
| Access Level: | acceso abierto |
| Palabra clave: | Peroxynitrite Microemulsion Striped Material Anatase Hydroxyapatite https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| Sumario: | Controlling aligned fiber micro-architectures to simulate the extracellular matrix for inducing important biological functions is a key challenge with regard to successful tissue regeneration. Here we present a bottom-up microemulsion-mediated strategy to obtain highly bioactive and biocompatible, striped Ce–TiO2 nano-crystalline superstructures with ONOO− scavenging activity. The employment of a bulkier organic ceria precursor in the material synthesis has several concurrent effects: (I) influencing the interfacial microemulsion droplet elasticity to create an aligned distribution of prismatic anatase nanoparticles causing the final lined morphology, (II) stabilizing the anatase active phase in a fine dispersed state and improving its resistance to the thermal anatase–rutile conversion, (III) indirectly favoring the rapid formation on the material surface of a hydroxyapatite layer composed of sphere-like globules of 3–5 μm in diameter essential for bone-bonding, and finally (IV) accelerating the ONOO− degradation into less harmful species NO2− and O2. |
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