Background: As a relatively novel and promising method, the bubble electrospinning is to
fabricate continuous and uniform nanowires using an aerated polymer solution in an electric field. A
large number of oxidized docking nanowires were established on a silicon substrate using the bubble
electrospinning, and then using tungsten oxide ammonium (AMT) as an appropriate calcined air with
the WO3 sources. WO3 production can enhance its catalytic activity, stability, and can raise its rhodamine
B degradation rate as well; the prospect of its wide application.
Methods: The high aspect ratio of WO3 nanowires is successfully prepared by a lightweight bubble
electrospinning technique using polyoxyethylene (PEO) and ammonium-tungstate(AMT) as the WO3
precursor after annealing in air at 400, 450 and 500°C, respectively. The products were characterized
by SEM, FTIR, XRD, and TG analysis. This Paper reviews the related patents on bubble electrospinning
and WO3 nanowires.
Results: The results were shown that the diameter of WO3 nanowires ranges from 2μm to 450nm,
which varies with the calcination temperature. XRD diffraction and infrared spectroscopy showed that
monoclinic crystals were prepared at different calcination temperatures (400, 450 and 500°C).
Conclusion: In addition, the UV-vis diffuse reflectance spectroscopy showed that the fiber had a
bandgap energy of 2.63 eV after calcination at 450oC, showing excellent photocatalytic activity in the
degradation of Rh B at 245 nm. The preparation of WO3 nanowires by bubble electrospinning method
is a feasible patented technology.