1. Electrospun nanofibers of V-doped TiO2 with high photocatalytic activity
- Author
-
Zhang, Zhenyi, Shao, Changlu, Zhang, Lina, Li, Xinghua, and Liu, Yichun
- Subjects
- *
PHOTOCATALYSIS , *ELECTROSPINNING , *TITANIUM dioxide , *NANOFIBERS , *VANADIUM , *X-ray diffraction , *MICROFABRICATION , *PHOTODEGRADATION - Abstract
Abstract: In this work, V-doped TiO2 nanofibers with different V contents have been fabricated by an electrospinning technique. The as-prepared nanofibers were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectra, X-ray photoelectron spectroscopy (XPS), and UV–Vis diffuse reflectance (DR) spectroscopy. The results indicated that the V4+ or V5+ ions were successfully incorporated into the crystal lattice of anatase TiO2 nanofibers. Meanwhile, the V doping could extend the visible light absorption of TiO2 nanofibers. The photocatalytic experiments indicated that the obtained V-doped TiO2 nanofibers possessed high activity for the photodegradation of organic pollutant methylene blue (MB). Especially, the 1.0 and 5.0wt.% V-doped TiO2 nanofibers exhibited the best catalytic activity under visible and ultraviolet (UV) light irradiation, respectively. Also, these nanofibers could be easily recycled without a decrease of the photocatalytic activity. [Copyright &y& Elsevier]
- Published
- 2010
- Full Text
- View/download PDF