title: Co2SnO4nanoparticles as a high performance catalyst for oxidative degradation of rhodamine B dye and pentachlorophenol by activation of peroxymonosulfate.
abstract: Spinel Co2SnO4nanoparticles are synthesized by a facile hydrothermal route in alkaline solution using SnCl4and CoCl2as precursors. The structure, morphology and chemical composition of the nanoparticles are characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive X-ray (EDX), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA). The catalytic performance of the Co2SnO4nanoparticles is thoroughly evaluated for peroxymonosulfate (PMS) activation for removal of rhodamine B (RhB) and pentachlorophenol (PCP) from water. The influence of different process parameters on the RhB degradation efficiency is examined and the catalytic stability is evaluated. Under optimized conditions, the Co2SnO4/PMS system is very efficient with a full degradation of RhB and PCP in less than 10 min at room temperature, as revealed by high performance liquid chromatography (HPLC) analysis. Quenching experiments suggested that sulfate radicals (SO4˙-) are the main active species in the degradation process. Moreover, the Co2SnO4catalyst is stable without any apparent activity loss after 5 cycling runs.
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France. rabah.boukherroub@iemn.univ-lille1.fr and Laboratoire de Physico-Chimie des Matériaux Minéraux et leurs Applications, Centre National de Recherches en Sciences des Matériaux, B.P. 95 Hammam-Lif, 2050, Tunisia and Département de Physique, Faculté des Sciences de Tunis, Université Tunis-El Manar 2092, Tunisia.
authors.forename: Monaam Ben
authors.initials: MB
authors.lastname: Ali
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France. rabah.boukherroub@iemn.univ-lille1.fr.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Barras
authors.affiliation: UMET, UMR CNRS 8207, Université Lille 1, 59655 Villeneuve d'Ascq Cédex, France.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Addad
authors.affiliation: UMET, UMR CNRS 8207, Université Lille 1, 59655 Villeneuve d'Ascq Cédex, France.
authors.forename: Brigitte
authors.initials: B
authors.lastname: Sieber
authors.affiliation: Laboratoire de Physico-Chimie des Matériaux Minéraux et leurs Applications, Centre National de Recherches en Sciences des Matériaux, B.P. 95 Hammam-Lif, 2050, Tunisia and Département de Physique, Faculté des Sciences de Tunis, Université Tunis-El Manar 2092, Tunisia.
authors.forename: Habib
authors.initials: H
authors.lastname: Elhouichet
authors.affiliation: Laboratoire de Physico-Chimie des Matériaux Minéraux et leurs Applications, Centre National de Recherches en Sciences des Matériaux, B.P. 95 Hammam-Lif, 2050, Tunisia.
authors.forename: Mokhtar
authors.initials: M
authors.lastname: Férid
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France. rabah.boukherroub@iemn.univ-lille1.fr.
authors.forename: Sabine
authors.initials: S
authors.lastname: Szunerits
authors.affiliation: Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France. rabah.boukherroub@iemn.univ-lille1.fr.
authors.forename: Rabah
authors.identifier: http://orcid.org/0000-0002-9795-9888
authors.initials: R
authors.lastname: Boukherroub