Abstract
Ti3+ self-doped TiO2 flower-like nanosphere photocatalyst was prepared by solvothermal method using ethylene glycol and titanium trichloride as raw materials. The composition, structure and morphology of the samples were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM), high resolution transmission electron microscope (HRTEM), BET and X-ray photoelectron spectroscopy (XPS). The experiment result indicated that the samples were self-doped with Ti3+, and the nanosheets (4–5 nm thickness) were self-assembled to form flower nanospheres with a specific surface area of 191 m2/g. Methylene blue (MB) of 2 × 10−5 mol/L was utilized as the simulated degradation target. The experiment result showed that the photocatalytic degradation efficiency of Ti3+ self-doped TiO2 reached 96.5% and 99% under 60 min and 120 min illumination respectively.
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