  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.
