title: Photocatalytic degradation of 2,4-dichlorophenol with MgAlTi mixed oxides catalysts obtained from layered double hydroxides.
abstract: MgAl and MgAlTi mixed oxides were obtained from the thermal treatment of LDH materials synthesized by the sol-gel method; these materials were characterized by N2 physisorption, XRD, UV-vis, XPS, EDS-SEM and TEM techniques. According to the results, Ti was incorporated in the LDH layer when content in the material was low. The MgAl and MgAlTi mixed oxides were evaluated in the photo-degradation of 2,4-dichlorophenol (2,4-DCP) in the presence of UV light. A superior efficiency in the photo-degradation of 2,4-DCP, in comparison with the Degussa P-25 TiO2 reference catalyst was observed, reaching a total decomposition of the 2,4-DCP molecule in less than 60 min. According to the results, Ti was incorporated in the LDH layer when the content in the material was low. The MgAl and MgAlTi mixed oxides were evaluated in the photo-degradation of 2,4-dichlorophenol (2,4-DCP) in the presence of UV light. A superior efficiency in the photo-degradation of 2,4-DCP with the MgAl and MgAlTi mixed oxides, in comparison with the Degussa P-25 TiO2 reference catalyst was observed, reaching a total decomposition of the 2,4-DCP molecule in less than 60 min.
authors.affiliation: Depto. de Química, Área de Catálisis, Universidad Autónoma Metropolitana - Iztapalapa, C.P. 09340 México, D.F., México.
authors.forename: G
authors.initials: G
authors.lastname: Mendoza-Damián
authors.forename: F
authors.initials: F
authors.lastname: Tzompantzi
authors.forename: A
authors.initials: A
authors.lastname: Mantilla
authors.forename: A
authors.initials: A
authors.lastname: Barrera
authors.forename: L
authors.initials: L
authors.lastname: Lartundo-Rojas
mesh_terms: D000535:Aluminum / Q000737:chemistry / Q000528:radiation effects*; D002384:Catalysis; D002733:Chlorophenols / Q000737:chemistry*; D006878:Hydroxides / Q000737:chemistry; D008345:Manganese / Q000737:chemistry / Q000528:radiation effects*; D010087:Oxides / Q000737:chemistry / Q000528:radiation effects*; D010782:Photolysis; D014025:Titanium / Q000737:chemistry / Q000528:radiation effects*; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D002733:Chlorophenols; D006878:Hydroxides; D010087:Oxides; D014874:Water Pollutants, Chemical; D008345:Manganese; D000535:Aluminum; D014025:Titanium; C004762:2,4-dichlorophenol
keywords: 2,4-Dichlorophenol photo-degradation; MgAlTi LDH sol–gel synthesis; MgAlTi mixed oxide photocatalysts; MgAlTi photocatalysts; XPS analysis