title: BiOBr/BiOF composites for efficient degradation of rhodamine B and nitrobenzene under visible light irradiation.
abstract: BiOBr/BiOF (BF) composites were successfully synthesized via a facile one-step hydrothermal method for the first time. The structures, morphologies and photocatalytic performances of BF composites were characterized by X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, UV-vis absorption spectroscopy, X-ray photoelectron spectroscopy, photoluminescence spectroscopy and electrochemical impedance spectroscopy respectively. The results show that the BF composites exhibit enhanced photocatalytic performances in the degradation of RhB and nitrobenzene with maximum degradation rates of 100% (25min) and 94% (300min) under visible light irradiation, respectively. The improved photocatalytic performance is mainly ascribed to the small crystalline size and the reduced electron-hole pair recombination with the presence of BiOF in the composites. Furthermore, the photodegradation mechanism was investigated and the h+and OH radicals are suggested to be the main active species for photocatalytic degradation of RhB and nitrobenzene.
authors.affiliation: Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China.
authors.forename: Tingting
authors.initials: T
authors.lastname: Jiang
authors.affiliation: Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China.
authors.forename: Jinliang
authors.initials: J
authors.lastname: Li
authors.affiliation: Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China. Electronic address: yanggao@ecust.edu.cn.
authors.forename: Yang
authors.initials: Y
authors.lastname: Gao
authors.affiliation: School of Mechanical and Electrical Engineering, Yangtze Normal University, Chongqing 408100, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Li
authors.affiliation: Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China. Electronic address: tlu@phy.ecnu.edu.cn.
authors.forename: Ting
authors.initials: T
authors.lastname: Lu
authors.affiliation: Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China.
authors.forename: Likun
authors.initials: L
authors.lastname: Pan
keywords: BiOBr/BiOF composites; Nitrobenzene; Photocatalysis; Rhodamine B