title: Photocatalytic degradation of methyl orange, methylene blue and rhodamine B with AgCl nanocatalyst synthesised from its bulk material in the ionic liquid [P6 6 6 14]Cl.
abstract: The photocatalytic degradation of wastewater containing three industrial dyes belonging to different families, methyl orange (MO), methylene blue (MB) and Rhodamine B (RhB), was studied under UV-Vis irradiation using synthesised silver chloride nanoparticles. The nanocatalyst was prepared by a dissolution/reprecipitation method starting from the bulk powder and the ionic liquid trihexyl(tetradecyl)phosphonium chloride, [P6 6 6 14]Cl, without addition of other solvents. The obtained catalyst was characterised by UV-Vis absorbance, X-ray powder diffraction, transmission electron microscopy and scanning electron microscopy. The decolourisation of the samples was studied by UV-Vis absorbance at the corresponding wavelength. Starting from 10 ppm dye solutions and 1 g L-1of the synthesised AgCl nanoparticles, degradation efficiencies of 98.4% for MO, 98.6% for MB and 99.9% for RhB, were achieved in 1 h. The degradation mechanisms for the different dyes were studied. Comparison with other frequently used nanocatalysts, namely P-25 Degussa, TiO2anatase, Ag and ZnO, highlights the strong catalytic activity of AgCl nanoparticles. Under the same experimental conditions, these nanoparticles led to higher (more than 10%) and faster degradations.
authors.affiliation: Chemical Engineering Department, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain E-mail: eva.rodil@usc.es.
authors.forename: Borja
authors.initials: B
authors.lastname: Rodríguez-Cabo
authors.affiliation: Chemical Engineering Department, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain E-mail: eva.rodil@usc.es.
authors.forename: Iago
authors.initials: I
authors.lastname: Rodríguez-Palmeiro
authors.affiliation: Chemical Engineering Department, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain E-mail: eva.rodil@usc.es.
authors.forename: Raquel
authors.initials: R
authors.lastname: Corchero
authors.affiliation: Department of Analytical Chemistry, Nutrition and Food Science, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
authors.forename: Rosario
authors.initials: R
authors.lastname: Rodil
authors.affiliation: Chemical Engineering Department, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain E-mail: eva.rodil@usc.es.
authors.forename: Eva
authors.initials: E
authors.lastname: Rodil
authors.affiliation: Chemical Engineering Department, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain E-mail: eva.rodil@usc.es.
authors.forename: Alberto
authors.initials: A
authors.lastname: Arce
authors.affiliation: Chemical Engineering Department, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain E-mail: eva.rodil@usc.es.
authors.forename: Ana
authors.initials: A
authors.lastname: Soto
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D002384:Catalysis; D004396:Coloring Agents; D052578:Ionic Liquids; D008751:Methylene Blue / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles; D055668:Photochemical Processes; D012235:Rhodamines / Q000737:chemistry*; D018030:Silver Compounds / Q000737:chemistry*; D014025:Titanium; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D052578:Ionic Liquids; D012235:Rhodamines; D018030:Silver Compounds; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; C100258:methyl orange; D014025:Titanium; C029773:rhodamine B; C037548:silver chloride; D008751:Methylene Blue