title: Visible-light driven degradation of ibuprofen using abundant metal-loaded BiVO₄ photocatalysts.
abstract: An efficient method for the degradation of ibuprofen as an aqueous contaminant was developed under visible-light irradiation with as-prepared bismuth vanadate (BiVO4) catalysts. The metal-loaded catalysts Cu-BiVO4 and Ag-BiVO4 were synthesized using a hydrothermal process and then a wet-impregnation method. All of the materials were fully characterized by X-ray diffraction, scanning electron microscopy, UV-vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy and BET surface area. The results indicated that all of the prepared samples had monoclinic scheelite structures. In the metal-loaded catalysts, silver existed as a mixture of Ag and Ag2O on the surface of the catalysts. However, copper existed as Cu2O and CuO. Additionally, the band gap values of BiVO4, Ag-BiVO4, and Cu-BiVO4 were 2.38, 2.31, and 2.30eV, respectively. Compared to the BiVO4 catalyst, the metal-loaded BiVO4 catalysts showed superior photocatalytic properties for the degradation of ibuprofen.
authors.affiliation: College of Water Sciences, Beijing Normal University, Beijing 100875, PR China. Electronic address: bian@bnu.edu.cn.
authors.forename: Zhao-Yong
authors.initials: ZY
authors.lastname: Bian
authors.affiliation: College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, PR China.
authors.forename: Ya-Qi
authors.initials: YQ
authors.lastname: Zhu
authors.affiliation: College of Water Sciences, Beijing Normal University, Beijing 100875, PR China.
authors.forename: Jun-Xiao
authors.initials: JX
authors.lastname: Zhang
authors.affiliation: College of Water Sciences, Beijing Normal University, Beijing 100875, PR China.
authors.forename: Ai-Zhong
authors.initials: AZ
authors.lastname: Ding
authors.affiliation: College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, PR China. Electronic address: wanghui@bjfu.edu.cn.
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D002384:Catalysis; D003300:Copper / Q000737:chemistry; D052918:Environmental Restoration and Remediation / Q000379:methods*; D007052:Ibuprofen / Q000737:chemistry / Q000528:radiation effects*; D008027:Light; D010782:Photolysis; D012834:Silver / Q000737:chemistry; D014638:Vanadates / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000528:radiation effects*; D014877:Water Pollution, Chemical / Q000517:prevention & control*
chemical_list: D014874:Water Pollutants, Chemical; C091754:bismuth vanadium tetraoxide; D012834:Silver; D014638:Vanadates; D003300:Copper; D001729:Bismuth; D007052:Ibuprofen
keywords: Abundant metal loaded; BiVO(4); Ibuprofen; Visible-light driven