Fabrication and Characterization of Highly Ordered Porous Anodic Titania on Titanium Substrate

Anodization of Ti using ethylene glycol containing 0.5wt% NH4F as electrolyte resulted in ordered arrays of TiO2 nanotube with a smooth surface. Electrochemical anodization was carried out at room temperature. The microstructures and morphologies of the TiO2 nanotube were investigated by scanning electron microscope (SEM), X-ray diffraction (XRD). A series of studies were carried out to investigate the properties of TiO2 nanotubes (anatase) for lithium anode materials and for the materials of photocatalyzing degradation of aqueous methyl orange. The results show that high density, well ordered and uniform TiO2 nanotube arrays are fabricated. TiO2 nanotube shows a comparatively reversible reaction when it is used for lithium ion battery by CV measurement. Adding H2O2 into the solution can improve the photocatalysis of TiO2 nanotube.