Preparation and characterization of TiO₂ nanotubes antimicrobial coating of iodine-supported titanium implants

TiO₂ nanotubes have a good application prospect in the field of drug load and delivery. In this study, TiO₂ nanotubes were prepared by electrochemical anodic oxidation with voltage and time of 60 V and 2 hours, respectively. After anodization, it was annealed at 450 ° C for 2 hours. The crystalline phases as well as the morphology and structure of nanotubes were characterized by XRD, field-emission scanning electron microscopy (FESEM) and energy dispersive X-ray spectroscopy (EDS), respectively. The results show that surface of TiO₂ nanotubes are clean and highly ordered construction. In addition, the diameter and wall thickness of the nanotubes are about 110 nm and 5 μm, respectively. Finally, the TiO₂ nanotubes which load iodine by electrodeposition method have polymer particulate iodine on the surface, thereby developed a kind of orthopaedic implants with antibacterial properties, which is expected to be widely used in clinical practice.