title: Heterogeneous photo-Fenton decolorization of methylene blue over LiFe(WO4)2 catalyst.
abstract: Heterogeneous photo-Fenton process using LiFe(WO(4))(2) as catalyst was studied to degrade Methylene blue (MB) dye in aqueous solution. The results indicated that LiFe(WO(4))(2) could effectively catalyze the decolorization of MB in the presence of UV light and H(2)O(2). The effects of different parameters such as amounts of catalyst, H(2)O(2) concentration, initial pH of the dye solution, initial dye concentration and UV light intensity on the decolorization efficiency of the process were investigated. It was found that LiFe(WO(4))(2) possessed a wide applicable pH range. X-ray photoelectron spectroscopy (XPS) was applied to investigate the transformation between Fe(III) and Fe(II). It was also observed that catalytic behavior could be reproduced in consecutive experiments without a considerable drop in the process efficiency.
authors.affiliation: Environmental Science & Engineering Research Center, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, PR China.
authors.forename: Fei
authors.initials: F
authors.lastname: Ji
authors.forename: Chaolin
authors.initials: C
authors.lastname: Li
authors.forename: Jiahuan
authors.initials: J
authors.lastname: Zhang
authors.forename: Lei
authors.initials: L
authors.lastname: Deng
mesh_terms: D002384:Catalysis; D004396:Coloring Agents / Q000032:analysis; D005290:Ferric Compounds / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D007220:Industrial Waste / Q000032:analysis; D007501:Iron / Q000737:chemistry*; D008751:Methylene Blue / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D013783:Textile Industry; D014414:Tungsten / Q000737:chemistry; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid; D014961:X-Ray Diffraction
chemical_list: D004396:Coloring Agents; C045076:Fenton's reagent; D005290:Ferric Compounds; D007202:Indicators and Reagents; D007220:Industrial Waste; D006861:Hydrogen Peroxide; D007501:Iron; D008751:Methylene Blue; D014414:Tungsten