?Effect of the addition of persulfate or H2O2 on the degradation of phenol by Ce-doped TiO2?

MARCELA V. MARTIN; ADRIANA IPIÑA; PAULA I. VILLABRILLE; JANINA A. ROSSO

Belo Horizonte

Congreso; II Congresso Iberoamericano de Processos Oxidativos Avançados.; 2015

Escola de Engenharia da UFMG

Degradation of phenol was used as a model reaction toinvestigate the photocatalytic properties of cerium-doped (0.1% atomic nominal)TiO2 catalyst, in the absence and presence of oxidants: persulphate(PS) or hydrogen peroxide (H2O2). Parallel experimentshave been performed using either artificial ultraviolet and visible light orsunlight during spring-summer seasons in La Plata city (34.90°S, 57.92°W,15masl) in a batch reactor. The best result was found with doped material and 7.0mM of PS: total mineralization (250mM phenol) after 5 hours of solar exposition. Differentintermediates were identified for the studied treatments.