title: Boron-doped bismuth oxybromide microspheres with enhanced surface hydroxyl groups: Synthesis, characterization and dramatic photocatalytic activity.
abstract: B-doped BiOBr photocatalysts were successfully synthesized via a facile solvothermal method with boric acid used as boron source. As-obtained products consist of novel hierarchical microspheres, whose nanosheet building units were formed by nanoparticles splicing. They showed dramatic photocatalytic efficiency toward the degradation of Rhodamine B (RhB) and phenol under the visible-light irradiation and the highest activity was achieved by 0.075B-BiOBr. The enhanced photocatalytic activity could be attributed to the enriched surface hydroxyl groups on B-doped BiOBr samples, which not only improved the adsorption of pollutant on the photocatalyst but also promoted the separation of photogenerated electron-hole pairs. In addition, it was found that the main reactive species responsible for the degradation of organic pollutant were h(+) and O2(-) radicals, instead of OH radicals.
authors.affiliation: School of Material Science and Engineering, China University of Mining and Technology, XuZhou 221116, China. Electronic address: lzsliu2008@hotmail.com.
authors.forename: ZhangSheng
authors.initials: Z
authors.lastname: Liu
authors.affiliation: School of Material Science and Engineering, China University of Mining and Technology, XuZhou 221116, China.
authors.forename: JinLong
authors.initials: J
authors.lastname: Liu
authors.affiliation: School of Material Science and Engineering, China University of Mining and Technology, XuZhou 221116, China.
authors.forename: HaiYang
authors.initials: H
authors.lastname: Wang
authors.affiliation: School of Material Science and Engineering, China University of Mining and Technology, XuZhou 221116, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Cao
authors.affiliation: School of Material Science and Engineering, China University of Mining and Technology, XuZhou 221116, China.
authors.forename: JiNan
authors.initials: J
authors.lastname: Niu
keywords: BiOBr; Microstructure; Photocatalytic activity; Solvothermal