Synthesis of Vanadium Oxide Nanostructures via an Hydrothermal Method and the Utilizes of Ultrasonic Process

Vanadium oxide nanotubes were synthesized using V2O5 powder as the precursor and hexadecylamine as the structure-directing template using a gel (V2O5.nH2O) reaction method followed by a one-step hydrothermal treatment (150-180 °C, 2–7 days). The effect of ultrasonics on the formation of nanotubes is reported. The structure and morphology of the nanotubes were investigated by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The inner and outer diameters of the nanotubes varied from 30 to 40 nm and 50 to 130 nm, respectively. The nanotubes measured several micrometers in length.