Figure 1. Fabrication of TiO₂/Ag_0.35V₂O₅ branched nanoheterostructures and characters of the heterostructures.

(a) Schematic illustration of the fabrication process for TiO₂/Ag_0.35V₂O₅ branched nanoheterostructures, which are first prepared by electrospinning and then annealed at 450 °C in ambient air. (b–e) SEM images at three different magnifications of TiO₂ nanofibers (b,c) and TiO₂/Ag_0.35V₂O₅ branched nanoheterostructures (d,e), where a great many small branches extend out of the fiber backbones. (f) N₂ adsorption–desorption isotherms and (g) XRD patterns of TiO₂ nanofibers and TiO₂/Ag_0.35V₂O₅ branched nanoheterostructures.