INQUISUR   21779
INSTITUTO DE QUIMICA DEL SUR
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Microemulsion-Mediated Hydrothermal Method for the Synthesis of Mesoporous Materials
Autor/es:
N. HASSAN, V VERDINELLI, P. V. MESSINA AND J.M RUSO
Lugar:
Porto
Reunión:
Congreso; 4th Iberian Meeting on Colloids and Interfaces; 2011
Resumen:
Nano/Meso structured materials have opened many new possibilities for applications in novel catalysis, sensors, biomaterials, drug delivery, fuel cells and energy storage. This subject aims at developing comprehensive methods of design of nano/meso structured materials and elucidating the fundamental relationships between the molecular structure of the templates and the function of these systems. Also it is interesting to tie the high thermal stability and mechanical strength to the nanoscale structure and to understand the new dimension of control that size and spatial confinement can bring. The biotechnological potencial of these materials is to be realized through our ability to tailor size, stability, pore distribution and biocompatibility. Here, our aim is to study the effect of microemulsion process on the final silica-based and titanium-based nanomaterial characteristics. For this purpose, we have analyzed the use of microemulsion droplet systems as a simple and controllable route for the synthesis of materials with and interesting microstructure and characteristics. Thus, increment microemulsion temperature produces a morphology change from granular to bicontinous structure. Silica-based material have shown interesting optoelectronic characteristics with very long fibrils of 30-50 nm diameter and more than 20 m length showing simultaneous short and long wavelength light emissions and band gap values. Pure decahedral anatase TiO2 particles with high content of reactive {001} facets which favors the biomimetic growth of amorphous tricalcium phosphate demonstrating their bioactivity were also obtained.