A limiting factor in the photocatalytic oxidation using UV irradiation of TiO2 is the recombination of conduction band electron (e-cb) with electron holes (h+vb) on TiO2 surface. Coupling ferrate(VI), known as an “environmentally friendly” oxidant, with UV/TiO2 photocatalysis may involve an oxidation synergism arising from the Fe(VI) scavenging of e-cb and the corresponding beneficial formation of highly reactive Fe(V). This study describes the results of coupling P25 TiO2 (suspension or supported on three-dimensional foams) and Fe(VI) (pure or Fe(VI) matter synthesized in our laboratory) to remove model pollutants. A synergism is highlighted during the treatment of R6G with UV/TiO2 associated to pure Fe(VI), while this abatement is not reached when coupling Fe(VI) matter with UV/TiO2. This process provides an environmentally and economically sustainable technology for water treatment

Coupling photocatalysts and ferrate oxidation: Towards an innovative solution for wastewater treatment

253rd National Meeting (2017)

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