Enhanced photoelectrochemical activities of a nanocomposite film with a bamboo leaf-like structured TiO2 layer on TiO2 nanotube arrays

A novel nanocomposite TiO2 film consisting of a bamboo leaf-like nano TiO2 layer on a nanotubular TiO2 arrays surface is synthesized by electrochemical anodization with wet chemical pretreatment; it shows almost three times higher activity as compared to that of nanotubular TiO2 arrays alone.