title: A templated method to Bi2WO6 hollow microspheres and their conversion to double-shell Bi2O3/Bi2WO6 hollow microspheres with improved photocatalytic performance.
abstract: Bi(2)WO(6) hollow microspheres with dimension of ca. 1.5 μm were synthesized via a hydrothermal method using polystyrene particles as the template. The as-prepared Bi(2)WO(6) hollow microspheres can be further transformed to double-shell Bi(2)O(3)/Bi(2)WO(6) hollow microspheres. The samples were fully characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy (TEM), high-resolution TEM, N(2)-sorption Brunauer-Emmett-Teller surface area, UV-vis diffuse-reflectance spectroscopy, and X-ray photoelectron spectroscopy. The as-formed double-shell Bi(2)O(3)/Bi(2)WO(6) hollow microspheres exhibit enhanced photocatalytic activity due to the hollow nature and formation of the p-n junction between p-type Bi(2)O(3) and n-type Bi(2)WO(6). The study provides a general and effective method in the fabrication of composition and dimension-tunable composite hollow microspheres with sound heterojunctions that may show a variety of applications.
authors.affiliation: Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis, Fuzhou University, Fuzhou 350002, People's Republic of China.
authors.forename: Xiaona
authors.initials: X
authors.lastname: Li
authors.forename: Renkun
authors.initials: R
authors.lastname: Huang
authors.forename: Yanhua
authors.initials: Y
authors.lastname: Hu
authors.forename: Yongjuan
authors.initials: Y
authors.lastname: Chen
authors.forename: Wenjun
authors.initials: W
authors.lastname: Liu
authors.forename: Rusheng
authors.initials: R
authors.lastname: Yuan
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Li
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D002384:Catalysis; D008027:Light; D008863:Microspheres; D010087:Oxides / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D013056:Spectrophotometry, Ultraviolet; D017973:Tungsten Compounds / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D010087:Oxides; D017973:Tungsten Compounds; D001729:Bismuth