2.1. SiC–TiO2 synthesis by sol–gel method
SiC–TiO2 were prepared using as raw materials silicon carbide
(SiC) commercial powder, mesh 200–450 (Aldrich) and titanium(
IV) isopropoxide (Aldrich 99.999%). 3 samples were prepared
in order to obtain SiC–TiO2 with different proportions of TiO2, 20,
50 and 80 wt.%, herein labeled as SG1, SG2 and SG3, respectively
[9]. First of all, SiC powder was dispersed in 30 mL of ethanol and