title: Assessment of the abatement of acelsulfame K using cerium doped ZnO as photocatalyst.
abstract: In the present study, we investigated the possibility to abate Acesulfame K, a persistent emerging contaminant, in aqueous media using zinc oxide based materials. For this purpose, bare and Ce-doped zinc oxide was prepared via an easy and cheap hydrothermal process using different cerium salts as precursors. Their photocatalytic performance was evaluated in different media, namely ultrapure and river water under both UV-vis and visible light. Commercial TiO2P25 was also employed and used as a reference photocatalyst for comparison purposes. The obtained results pointed out that cerium doped zinc oxide composites exhibit higher performance than TiO2P25, especially under visible light and in the presence of organic matter, when the activity of the latter is greatly depressed. In particular, ZnO doped with cerium (1%) was the most effective material, and could be a promising alternative to TiO2P25, especially in the treatment of natural waters.
authors.affiliation: Department of Chemistry, Via Giuria 7, 10125 Torino, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Calza
authors.affiliation: Department of Chemistry, Via Giuria 7, 10125 Torino, Italy.
authors.forename: C
authors.initials: C
authors.lastname: Gionco
authors.affiliation: Department of Chemistry, Via Giuria 7, 10125 Torino, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Giletta
authors.affiliation: Department of Chemistry, Laboratory of Analytical Chemistry, Ioannnina 45 110, Greece.
authors.forename: M
authors.initials: M
authors.lastname: Kalaboka
authors.affiliation: Department of Chemistry, Laboratory of Analytical Chemistry, Ioannnina 45 110, Greece.
authors.forename: V A
authors.initials: VA
authors.lastname: Sakkas
authors.affiliation: Department of Chemistry, Laboratory of Analytical Chemistry, Ioannnina 45 110, Greece.
authors.forename: T
authors.initials: T
authors.lastname: Albanis
authors.affiliation: Department of Chemistry, Via Giuria 7, 10125 Torino, Italy. Electronic address: mariacristina.paganini@unito.it.
authors.forename: M C
authors.initials: MC
authors.lastname: Paganini
mesh_terms: D000465:Algorithms; D002384:Catalysis; D002563:Cerium / Q000737:chemistry*; D008027:Light; D055668:Photochemical Processes; D045483:Rivers; D013549:Sweetening Agents / Q000032:analysis*; D013843:Thiazines / Q000032:analysis*; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D013549:Sweetening Agents; D013843:Thiazines; D014874:Water Pollutants, Chemical; D002563:Cerium; C006362:acetosulfame; D015034:Zinc Oxide
keywords: Acesulfame K; Cerium; River water; Zinc oxide