“…This effect is attributed to the further degradation of phenolic compounds in other products, not detected with the TPC analysis, occurred during the light irradiation period. 55 Previous studies pointed out that photocatalysis exerts a strong oxidation action and so, the initial products can be further oxidized. 20,22,55 On the other hand, considering the experiments 1, 4, 7, 9, 10, where a medium and high concentration of catalyst was tested, an opposite effect of photocatalysis was observed (Table 2).…”