Anodic TiO nanotube layers electrochemically filled with MoO and their antimicrobial properties.

In the present work, the authors produce a Ti surface with a TiO nanotube coating and investigate the electrochemical filling of these layers with MoO. The authors demonstrate that using a potential cycling technique, a homogenous MoO coating can be generated. Controllable and variable coating thicknesses are achieved by a variation of the number of cycles. Thicknesses from a few nanometers to complete filling of the nanotube layers can be obtained. A thermal treatment is used to convert the as-deposited amorphous MoO(x) phases into MoO. These MoO loaded nanotube layers were then investigated regarding their antimicrobial properties using strains of Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. The authors found that the combination of crystalline MoO on TiO nanotubes shows excellent antimicrobial properties.