Guaraldo, T. T. [UNESP]Pulcinelli, Sandra Helena [UNESP]Zanoni, Maria Valnice Boldrin [UNESP]2014-05-202014-05-202011-01-01Journal of Photochemistry and Photobiology A-chemistry. Lausanne: Elsevier B.V. Sa, v. 217, n. 1, p. 259-266, 2011.1010-6030http://hdl.handle.net/11449/25809Photoanodes based on Ti/TiO2 thin films were prepared by the sol-gel method, using either tetraisopropoxide (Ti(OPri)(4)) or modified tetraisopropoxide, producing electrodes with different sized nanoparticle coatings, termed nanoporous (20 nm) or nanoparticulated (10 nm) electrodes. The anatase form dominated the composition of the nanoparticulated electrode, which presented a higher surface area, a fiat band potential shift of -160 mV and a 50% improvement in photoactivity, compared to the nanoporous electrode. 100% color removal, and 75% mineralization, of indigo carmine dye were achieved after 15 min of photoelectrocatalytic treatment using a nanoparticulated Ti/TiO2 electrode operated at a current density of 0.4 mA cm(-2). Our findings indicate that the use of nanoparticulated electrodes, under UV irradiation and with controlled current density, is an efficient alternative for the removal of food dye contaminants during wastewater treatment. (C) 2010 Elsevier B.V. All rights reserved.259-266engIndigo carminePhotoelectrocatalytic treatmentNanoporous TiO2Nanoparticulated TiO2Thin filmsSol-gelArtigo10.1016/j.jphotochem.2010.10.019WOS:000286952400036Acesso restrito99712025852869670000-0002-2296-1393