【摘要】 利用TiO₂粉体在高浓度NaOH溶液中水热反应制备TiO₂纳米管。采用X射线衍射（XRD）、扫描电镜（SEM），透射电镜（TEM），紫外可见分光光度计（UV-Vis）考察了NaOH浓度、水热反应温度、水热反应时间等因素对TiO₂纳米管结构和性能的影响。结果表明：当NaOH浓度为10 mol/L，水热反应温度为160℃，水热反应时间20 h时，所制备的TiO₂纳米管显示出较高的光催化活性，经紫外光照30 min后，对甲基橙（MO）的降解率可达75.48%。更多还原

【Abstract】 TiO₂ nanotubes were prepared through a 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 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: 10 mol/L of NaOH, 20 h of reaction time and 160 oC of reaction temperature. TiO₂ nanotubes exhibit higher photocatalytic activity, and the degradation rate of methyl orange（MO）in aqueous solution reaches 75.48% after UV irradiation for 30 min.更多还原