Abstract:TiO2 nanotubes were prepared through hydrothermal method with TiO2 power in high concentration NaOH solution. XRD, SEM, TEM and UV-Vis were adopted to analyze as-prepared TiO2 nanotubes. The influence of the factors, such as NaOH concentration, reaction time and temperature, on the structure and properties of TiO2 nanotubes were investigated. The results show that the uniform TiO2 nanotubes are obtained under optimum preparation conditions: 10mol/L of NaOH, 20h of reaction time and 160℃ of reaction temperature. TiO2 nanotubes exhibit higher photocatalytic activity, and the degradation rate of methyl orange (MO) in aqueous solution reached 75.48% after UV irradiation for 30 min.