将钛片放入NaOH溶液中,用水热法制备了TiO2纳米线阵列薄膜.系统地研究了水热参数对产物的影响以及纳米结构TiO2的生长机制.通过场发射扫描电子显微镜(FESEM)、X射线衍射仪(XRD)、透射电子显微镜(TEM)等对样品进行了表征.结果表明,水热过程中,钛溶解和钛酸盐结晶生长之间的动态平衡决定了产物的结构和形貌.在相同温度下,NaOH溶液浓度降低,水热产物的维度就增加.温度升高会促进钛溶解和钛酸盐扩散,使产物在一维尺度上生长.同时高温使晶体结构更加完整.制备的TiO2纳米线陈列显示了良好的光电性能.
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