Photocatalytic treatment of Cr(VI) by Heterogeneous Photocatalysis with TiO2

M.I. LITTER

Conferencia; Conferencia; 2013

Complete elucidation of the mechanism under UV and visible (solar) light (with a dye) Cr(VI) reduced through three successive one-electron transfer steps (proven by EPR and UV-vis) The synergetic effect of electron donors present in the system (oxalic acid, citric acid, EDTA, etc.) allows the simultaneous treatment of two pollutants: Cr(VI) and the electron donor, generally present together in industrial processes. No inhibition by O2 (proven by using Pt/TiO2) The lack of effect of O2 constitutes an important technological advantage in contrast with most photocatalytic reduction processes.