Enhancement of the Visible-Light Photocatalytic Activity of In2O3-TiO2 Nanofiber Heteroarchitectures

摘要

One-dimensional In2O3-TiO2 heteroarchitectures with high visible-light photocatalytic activity have been successfully obtained by a simple combination of electrosplnning technique and solvothermal process. The as-obtained products were characterized by field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray (EDX) spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-vis spectra. The results revealed that the secondary I02O3 nanostructures were successfully grown on the primary TiO2 nanofibers substrates. Compared with the pure TiO2 nanofibers, the obtained In2O3-TiO2 heteroarchitectures showed enhancement of the visible-light photocatalytic activity to degrade rhodamine B (RB) because of the formation of heteroarchitectures, which might improve theseparation of photogenerated electrons and holes derived from the coupling effect of TiO2 and In2O3 heteroarchitectures. Moreover, the In2O3-TiO2 heteroarchitectures could be easily recycled without the decrease in the photocatalytic activity because of their one-dimensional nanostructural property.