Journal of Inorganic Materials ›› 2012, Vol. 27 ›› Issue (7): 687-692.DOI: 10.3724/SP.J.1077.2012.11490

• Research Paper • Previous Articles     Next Articles

Preparation and Photocatalytic Properties of γ-Bi2O3/TiO2 Composite Fibers

LI Yue-Jun1,2, CAO Tie-Ping2, SHAO Chang-Lu1, WANG Chang-Hua1   

  1. (1. Centre for Advanced Optoelectronic Functional Material Research, Northeast Normal University, Changchun 130024, China; 2. Department of Chemistry, Baicheng Normal College, Baicheng 137000, China)
  • Received:2011-08-05 Revised:2011-10-28 Published:2012-07-20 Online:2012-06-06
  • About author:LI Yue-Jun. E-mail:
  • Supported by:

    National Natural Science Foundation of China (50572014, 50972027); New Century Excellent Talents in University (05-0322); Development Project of Science and Technology of Jilin Province (201205034)

Abstract: 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%.

Key words: electrospinning, solvothermal method, γ-Bi2O3/TiO2 composite fibers, photocatalytic degradation

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