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WO3/BiVO4 films obtained by electrochemical deposition of BiVO4 over mesoporous WO3 were applied to the photoelectrochemical degradation of selected emerging contaminants (ketoprofen and levofloxacine) in aqueous solutions. The WO3/BiVO4 films in this work are characterized by a mesoporous morphology with a maximum photoconversion efficiency >40% extending beyond 500 nm in Na2SO4 electrolytes. Oxygen was found to be the dominant water oxidation product (ca. 90% faradaic yield) and no evidence for the photogeneration of OH radicals was obtained. Nevertheless, both 10 ppm levofloxacine and ketoprofen could be degraded at WO3/BiVO4 junctions upon a few hours of illumination under visible light. However, while levofloxacine degradation intermediates were progressively consumed by further oxidation at the WO3/BiVO4 interface, ketoprofen oxidation byproducts, being stable aromatic …
Royal Society of Chemistry
Publication date: 
1 Jan 2019

Vito Cristino, Luisa Pasti, Nicola Marchetti, Serena Berardi, Carlo Alberto Bignozzi, Alessandra Molinari, Francesco Passabi, Stefano Caramori, Lucia Amidani, Michele Orlandi, Nicola Bazzanella, Alberto Piccioni, Jagadesh Kopula Kesavan, Federico Boscherini, Luca Pasquini

Biblio References: 
Volume: 18 Issue: 9 Pages: 2150-2163
Photochemical & Photobiological Sciences