TiO<sub>2</sub>纳米管的“兼并”现象及机理分析

TiO₂纳米管的“兼并”现象及机理分析

详细信息

摘要: 采用电化学阳极氧化法制备了高度有序TiO₂纳米管阵列,并提出纳米管“兼并”的概念。结合FE-SEM分析并验证了Macak等人提出的pH值梯度理论,并在此基础上用双电层理论解释了“兼并”的形成机理,同时解释了初期纳米管管径进一步增大的原因。
- 阳极氧化 /
- TiO₂纳米管 /
- 纳米管的“兼并” /
- pH值梯度 /
- 双电层效应
Abstract: In this article,highly ordered TiO₂ nanotube arrays were prepared by electrochemical anodization.The concept of‘mergers’ was proposed.pH gradient theory put forward by Macak was verified with SEM images and the formation mechanism of ‘mergers’ of titania nanotubes was explained by the effect of electric double layer.The reasons of the further augment of orig-inal nanotubes' diameters were also analyzed.
- Anodic oxidation /
- TiO₂ nanotube /
- ‘Mergers’of nanotubes /
- pH value gradient /
- Double electric layer effect