Incorporación de nanopartículas de especies de cobre en una matriz de sílica xerogel

Using IR absorption and X-ray diffraction we have analyzed the incorporation of Cu-based nanometer dimension clusters in a SiO2 matrix in samples prepared by the sol-gel method. We doped the silica xerogels samples using two different copper sources: Cu(NO3)2 · 2.5 H2O and copper nanoparticles chemical synthesized. The samples were studied as a function of the annealing temperature. It was found that by heat treatments and the appropriate copper precursor we can produce nanoparticles of metallic Cu, cuprous and cupric oxide. The obtained IR absorption results allow to study the interaction of the metal-based species and the oxide support.

VIVO