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Dispersion of Co3O4 nanoparticles within SBA-15 using alkane solvents

2008; Elsevier BV; Volume: 118; Issue: 1-3 Linguagem: Inglês

10.1016/j.micromeso.2008.08.053

1873-3093

Juliette van der Meer, Isabelle Bardez, Florence Bart, Pierre‐Antoine Albouy, Gilles Wallez, Anne Davidson,

Zeolite Catalysis and Synthesis

Spinel cobalt oxide nanoparticles have been nanocasted inside the pores of a SBA-15 silica using the "two solvents" technique, which implies that the silica is pre-wetted with an alkane solvent before loading the pores with an aqueous solution carrying the precursor, a nitrate salt, of the desired particle composition. TEM analysis of the samples, comparing the effect of four different solvents (n-pentane, n-hexane, n-heptane and cyclohexane), showed that the nanoparticles' size, shape and dispersion within the silica support differ as a function of the non-polar solvent. N2 sorption, XRD and SAXS experiments have been carried out to confirm this phenomenon by more statistical data.