%0 Journal Article
%T Preparation and Photocatalytic Properties of γ-Bi2O3/TiO2 Composite Fibers
%A LI Yue-Jun
%A CAO Tie-Ping
%A SHAO Chang-Lu
%A WANG Chang-Hua
%J 无机材料学报
%D 2012
%I Science Press
%R 10.3724/sp.j.1077.2012.11490
%X Heterostructured γ-Bi2O3/TiO2 composite fibers were prepared via combination of solvothermal method and electrospinning technique. X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscope (EDS), transmission electron microscope (TEM), high-resolution transmission electron microscope (HRTEM) and UV-Vis absorption spectra were used to characterize heterostructured γ-Bi2O3/TiO2 composite fibers. The photocatalytic properties of the heterostructured samples were evaluated by degrading rhodamine B (RB) under visible light irradiation. The results showed that γ-Bi2O3 nanosheets could evenly grow on the TiO2 fibers surface and thus heterostructured γ-Bi2O3/TiO2 composite fibers were successfully obtained. The absorption range of the as-obtained heterostructured samples were extended to the visible light region. Moreover, the presence of γ-Bi2O3 nanostructures/TiO2 fibers heterostructures was beneficial to separation of photo-generated electrons and holes which enhanced the system’s quantum efficiency. In comparison with that of pure TiO2 nanofibers, the γ-Bi2O3/TiO2 heterostructures have enhanced photocatalytic efficiency under visible light irradiation, and the decolorizing efficiency of RB solution can reach 87.8%.
%K <p>electrospinning
%K solvothermal method
%K γ-Bi2O3/TiO2 composite fibers
%K photocatalytic degradation</p>
%U http://www.jim.org.cn/fileup/PDF/20120703.pdf