title: BiOBr hierarchical microspheres: Microwave-assisted solvothermal synthesis, strong adsorption and excellent photocatalytic properties.
abstract: Two kinds of BiOBr nanosheets-assembled microspheres were successfully prepared via a facile, rapid and reliable microwave-assisted solvothermal route, employing Bi(NO(3))(3)·5H(2)O and cetyltrimethylammonium bromide (CTAB) as starting reagents in the absence or presence of oleic acid. The phase and morphology of the products were characterized by powder X-ray diffraction (XRD), energy dispersive spectrometry (EDS), selected area electron diffraction (SAED), high resolution transmission electron microscopy (HRTEM) and scanning electron microscopy (SEM). Experiments indicated that the formation of these building blocks of microspheres could be ascribed to the self-assembly of nanoparticles according to mesocrystal growth mode. Interestingly, both samples exhibited not only strong adsorption abilities, but also excellent photocatalytic activities for methyl orange (MO), rhodamine B (RhB) and phenol. The resulting BiOBr hierarchical microspheres are very promising adsorbents and photocatalysts for the treatment of organic pollutants.
authors.affiliation: State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Xiao-Feng
authors.initials: XF
authors.lastname: Cao
authors.forename: Xue-Tai
authors.initials: XT
authors.lastname: Chen
authors.forename: Zi-Ling
authors.initials: ZL
authors.lastname: Xue
mesh_terms: D000327:Adsorption; D001391:Azo Compounds / Q000737:chemistry; D001729:Bismuth / Q000737:chemistry*; D002384:Catalysis; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry*; D008863:Microspheres; D008872:Microwaves; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000191:economics / Q000379:methods*; D010636:Phenols / Q000737:chemistry; D055668:Photochemical Processes; D012235:Rhodamines / Q000737:chemistry
chemical_list: D001391:Azo Compounds; D002593:Cetrimonium Compounds; D010636:Phenols; D012235:Rhodamines; C100258:methyl orange; C029773:rhodamine B; C542279:bismuth oxybromide; D001729:Bismuth; D000077286:Cetrimonium