Answers are grounded in this paper and cite their sources.
The kinetics of fluorene oxidation by systems that include ozone (O 3 ), ozonation in the presence of titanium dioxide (O 3 /TiO 2 ), photolytic ozonation (O 3 /UV-A), titanium dioxide photocatalysis (TiO 2 /UV-A), and titanium dioxide photocatalytic ozonation (UV-A/O 3 /TiO 2 ) has been mathematically assessed by the proposal of a mechanism based on experimental results. The conventional free-radical mechanism involved in ozone processes was the starting point to model the different systems. Single fluorene ozonation simulation suggests the existence of a hydroxyl radical source other than ozone activation through hydroxyl anions and/or the ionic form of hydrogen peroxide. Combination of O 3 with TiO 2 or UV-A radiation involves a negligible effect in the first case and the improvement of the fluorene removal rate in the second case. In the latter process, ozone photolysis likely entails a higher formation of hydroxyl radicals. Because fluorene does not absorb UV-A light, photocatalytic oxidation of fluorene by the system TiO 2 /UV-A also indicates the development of surface radical reactions. Finally, the photocatalytic ozonation of the polycyclic aromatic hydrocarbon implies a synergistic effect of the single systems.
No takes yet. Share an insight, caveat, or question.
Rivas et al. (2005) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: