Influence of Anodization Parameters in the TiO2 Nanotubes Formation on Ti-7.5Mo Alloy Surface for Biomedical Application

Abstract

In this study, the effects of the parameters such as applied potential difference, time and annealing temperature in the titania nanotubes formation were evaluated. The morphology of the nanotubes was evaluted by using Field Emission Gun -Scanning Electron Microscope (FEG-SEM), Atomic Force Microscope (AFM), contact angle and X-rays diffraction (XRD). Self-organized nano-structures were formed on the Ti-7.5Mo alloy surface from the same electrolyte (glycerol/NH4F) for all conditions. It was observed that the potential influenced the diameter while the length was changed according to the anodization time lenght. The presence of the phases anatase and rutile was altered by annealing temperature. Results showed that 20V-48h-450 ºC was the better than other conditions for application as biomaterial.

Nanostructured titanium dioxide for use in bone implants: a short review

“…Table III lists several studies on nanostructured TiO 2 , revealing how nanoscale topography and crystal structure affect cell-surface interactions. It has been reported [31,191,[204][205][206][207][208] that nanotubular surfaces produced by anodization are able to display cellular responses and simulate a bioactive matrix for cellular accommodation. This is due to increased surface wettability and selective adsorption of proteins in body fluids [12,47].…”

Antibacterial photocatalytic activity of different crystalline TiO2 phases in oral multispecies biofilm

“…This greater mechanical performance of all TiO 2 films compared to cpTi surface is an important finding, since abutments are usually exposed to severe conditions in the oral cavity, such as in biofilm development and abrasive forces during hygiene procedures, such as tooth brushing. With respect to the biological response to dental implants, the surface wettability is one of the most important parameters influencing the osseointegration process [58]. Hydrophilic surfaces seems to be more favorable to interact with biological fluids, cells and tissues than hydrophobic ones [58].…”

“…With respect to the biological response to dental implants, the surface wettability is one of the most important parameters influencing the osseointegration process [58]. Hydrophilic surfaces seems to be more favorable to interact with biological fluids, cells and tissues than hydrophobic ones [58]. Rutile (110) presented a hydrophobic tendency, due to its oxygen vacancies which did not lead to the H 2 O dissociation on the TiO 2 surface, reflecting on a poor water wetting ability [57].…”

Electrochemical Oxidation of Ti15Mo Alloy—The Impact of Anodization Parameters on Surface Morphology of Nanostructured Oxide Layers

“…As already mentioned, β-phase alloys may be an interesting alternative for applicability, where some of the most commonly investigated are titanium-molybdenum alloys with different Mo contents [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ]. The synthesis of an oxide layer on such surfaces may be beneficial from the implantology point of view, since it is well-known that nanotopography facilitates adhesion and proliferation of osteoblast cells [ 22 , 23 ], whereas molybdenum oxides may have antibacterial properties [ 24 , 25 ].…”