Synthesis and applications of Fe-mesoporous silica composites

R. C. MERCADER

Medellín

Congreso; XIII Latin American Conference on the Applications of the Mössbauer Effect; 2012

Universidad de Antioquia

Since about ten years ago, we have synthesized ordered mesoporous SiO2 materials as templates to confine magnetic compounds in low-dimensional arrays. Basic questions remain unanswered regarding the magnetic behavior, the main factors that influence the filling of the channels with iron oxides, the mechanism of the catalysts in the Fischer-Tropsch reaction, like its possible structure sensitivity. The applications vary from high specific surface catalysts, biosensors and drug delivery in medicine, heavy metals capture, to high-density materials for magnetic storage materials. In this work we´ll talk about the routes, successful and not, that have been followed to obtain homogeneous nanoarrays of iron oxides embedded in uniform SiO2 templates, namely SBA-15 and MCM-41.