title: Design of polyoxometallate-titania composite film (H3PW12O40/TiO2) for the degradation of an aqueous dye Rhodamine B under the simulated sunlight irradiation.
abstract: A series of polyoxometallate/titania (H(3)PW(12)O(40)/TiO(2)) composite films with different H(3)PW(12)O(40) loadings (6.3%, 7.7%, 14.7% and 16.7%) were prepared by a modified sol-gel-hydrothermal route followed by a spin-coating method. The smooth films are constructed by the well-distributed H(3)PW(12)O(40)/TiO(2) sphere with particle size in the range from 80 to 100 nm, and the bandgap of the composite films is somewhat narrower compared with as-prepared pure TiO(2) film. As a novel photocatalytic material, the photocatalytic performances of the H(3)PW(12)O(40)/TiO(2) composite films were evaluated by the degradation and mineralization of an aqueous dye Rhodamine B (RB) under solar simulating Xe lamp irradiation (320 nm<λ<780 nm), and the enhanced photocatalytic activity in comparison to pure TiO(2) film as well as the H(3)PW(12)O(40)/TiO(2) and Degussa P25 TiO(2) powder was obtained. Additionally, the composite films can be reused at least for three times without losing their catalytic activity.
authors: School of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024, PR China.
authors: Nan
authors: N
authors: Lu
authors: Yahui
authors: Y
authors: Zhao
authors: Hongbo
authors: H
authors: Liu
authors: Yihang
authors: Y
authors: Guo
authors: Xing
authors: X
authors: Yuan
authors: Hui
authors: H
authors: Xu
authors: Huifang
authors: H
authors: Peng
authors: Hongwei
authors: H
authors: Qin
mesh_terms: D002384:Catalysis; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D059027:Recycling; D012235:Rhodamines / Q000737:chemistry*; D013472:Sunlight; D014025:Titanium / Q000737:chemistry*
chemical_list: D012235:Rhodamines; C009495:titanium dioxide; D014025:Titanium; C029773:rhodamine B