One-dimensional Titanium Dioxide Nanomaterials: Nanotubes
  In the present review we try to give a comprehensive and most up to date view to the field, with an emphasis on the currently most investigated anodic TiO2 nanotube arrays. We will first give an overview of different synthesis approaches to produce TiO2 nanotubes and TiO2 nanotube arrays, and then deal with physical and chemical properties of TiO2 nanotubes and techniques to modify them. Finally, we will provide an overview of the most explored and prospective applications of nanotubular TiO2. 
Kiyoung Lee, Anca Mazare, Patrik Schmuki
cond-mat.mtrl-sci