Synthesis of titanium dioxide (TiO2) nanofiber and nanotube using different chemical method
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文摘
Titanium dioxide (TiO2) was prepared using chemical spray pyrolysis technique on glass substrate at 350 °C with a spray rate of 5 s/1 min, for a thickness of 350 nm. The material characterization of the TiO2 nanofiber was performed using X-ray diffraction (XRD), scanning electronic microscopy (SEM), and atomic force microscopy (AFM). The optical absorption of the fibers was measured using a UV – vis spectrophotometer. The X-ray diffraction measurements confirmed that the films grown by this technique have good crystalline tetragonal anatase phase structure and with the preferred orientation along the [1 0 1] direction. The surface morphology of the TiO2 fibers showed that the micrography of the nanofiber are extra-fine. UV – vis transmittance measurements have shown that TiO2 fibers are highly transparent (∼90 (%in the visible wavelength region. The optical band gap of TiO2 fiber is 3.32 eV. The diameters of titanium dioxide nanotubes are found to be 30 – 60 nm, retaining the size and near cylindrical shape of the pores.

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