title: Solar-assisted photodegradation of isoproturon over easily recoverable titania catalysts.
abstract: An easily recoverable homemade TiO2catalyst (GICA-1) has been evaluated during the overall photodegradation process, understood as photocatalytic efficiency and catalyst recovery step, in the solar light-assisted photodegradation of isoproturon and its reuse in two consecutive cycles. The global feasibility has been compared to the commercial TiO2P25. The homemade GICA-1 catalyst presented better sedimentation efficiency than TiO2P25 at all studied pHs, which could be explained by its higher average hydrodynamic particle size (3 μm) and other physicochemical surface properties. The evaluation of the overall process (isoproturon photo-oxidation + catalyst recovery) revealed GICA-1 homemade titania catalyst strengths: total removal of isoproturon in less than 60 min, easy recovery by sedimentation, and reusability in two consecutive cycles, without any loss of photocatalytic efficiency. Therefore, considering the whole photocatalytic cycle (good performance in photodegradation plus catalyst recovery step), the homemade GICA-1 photocatalyst resulted in more affordability than commercial TiO2P25. Graphical abstract.
authors.affiliation: Instituto de Catálisis y Petroleoquímica, ICP-CSIC, C/Marie Curie 2, 28049, Madrid, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Tolosana-Moranchel
authors.affiliation: Instituto de Catálisis y Petroleoquímica, ICP-CSIC, C/Marie Curie 2, 28049, Madrid, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Carbajo
authors.affiliation: Instituto de Catálisis y Petroleoquímica, ICP-CSIC, C/Marie Curie 2, 28049, Madrid, Spain. mfaraldos@icp.csic.es.
authors.forename: M
authors.identifier: http://orcid.org/0000-0002-3777-8452
authors.initials: M
authors.lastname: Faraldos
authors.affiliation: Instituto de Catálisis y Petroleoquímica, ICP-CSIC, C/Marie Curie 2, 28049, Madrid, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Bahamonde
mesh_terms: D002384:Catalysis; D010084:Oxidation-Reduction; D010671:Phenylurea Compounds / Q000737:chemistry*; D010782:Photolysis; D013472:Sunlight; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry* / Q000302:isolation & purification; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D010671:Phenylurea Compounds; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; C028904:isoproturon; D014025:Titanium
keywords: Cycles; Isoproturon; Reuse; Sedimentation; Solar photocatalysis; TiO2