Table 1 shows the energy band gap and specific surface area
values for each one of the samples. According to these results, allcompounds could be activated efficiently in photocatalytic processes
using UV-light because their Eg values are near to 3.0 eV.
The small difference observed in band gap values of SiC–TiO2 catalysts
is due to the step formed between both semiconductors as
a consequence of their different potential oxidation values. This
could enhance the photocatalytic behavior for degradation reactions
because a synergy effect in SiC–TiO2 catalysts could happen
as Yamashita et al. mentioned in a previous work [6]; the electrons
will be promoted in the valence and conduction band of both
semiconductors, SiC and TiO2.