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(a) SEM image of fibers synthesized by hydrothermal method. (b) SEM image of fibers after storage in ethanol for 48 h.
EEL spectra of V -edge and O -edge for storage in ethanol for 1 month. The EEL spectra for other vanadium oxides and vanadium metal are plotted together for comparison.
(a) TEM image of fibers. The inset of ED pattern shows that the fibers have a good crystallinity. (b) TEM image of ethanol. The inset of EDX spectroscopy shows the existence of vanadium oxide and the inset of ED pattern shows its amorphous phase transition.
High-resolution TEM image of ethanol. The marked areas are the formed nanoparticles.
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