TiO_2纳米花的制备及其生长机理研究

Preparation and Growth Mechanism Study for TiO_2 Nanoflowers

利用水热法在导电玻璃基底上制备出TiO_2纳米花,反应温度和保温时间分别为160℃和12h。表征结果显示,TiO_2纳米花是一种典型的金红石型结构,由一束底端聚集在一起的纳米棒形成。进一步实验发现,随着温度和时间的增加,将在导电玻璃表面形成定向生长的TiO_2纳米棒。同时,分析讨论了TiO_2纳米花的生长机理,为进一步推进TiO_2纳米材料的可控制备提供研究基础。

In this research, the TiO2 nanoflowers were prepared on the conductive glass under the reaction temperature of 160℃ and reaction time of 12h. The result showed that the TiO2 nanoflowers had a typical rutile structure, and it was composed by a cluster of nanorods with the tails being tied together. It was also found that the nanoflower would directional growth into TiO2 nanorods with increase of reaction temperature and reaction time. At last, the growth mechanism of the nanoflower was discussed, which would benefit for the controllable preparation of the TiO2 nanomaterials.