1. A novel Ce, C-codoped TiO2 nanoparticles and its photocatalytic activity under visible light
- Author
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Xu, Jingjing, Ao, Yanhui, and Fu, Degang
- Subjects
- *
NANOPARTICLES , *TITANIUM dioxide , *PHOTOCATALYSIS , *CERIUM , *BAND gaps , *X-ray diffraction , *SCANNING electron microscopy - Abstract
Abstract: A novel photocatalyst (Ce, C-codoped titania) was synthesized through a modified sol–gel method under mild condition. The as-prepared sample was investigated by XRD, SEM, DRS and XPS. It was found that the as-prepared photocatalyst was composed of spheroidal particles, which were smaller than undoped ones. The absorbance spectrum of Ce, C-codoped TiO2 exhibited significant red-shift to visible region. It can be ascribed to appearance of a new electronic state in the middle of the TiO2 band-gap. Furthermore, cerium doping could slow the radiative recombination process of photogenerated electrons and holes in TiO2. Accordingly, for degradation of dye Reactive Brillint Red X-3B (C.I. reactive red 2) under visible light, the photocatalytic activity of Ce, C-codoped TiO2 improved much compared to other samples (C-doped TiO2, undoped TiO2 and P25). [Copyright &y& Elsevier]
- Published
- 2009
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