Effect of nanostructured titanium on anodization growth of self-organized TiO₂nanotubes

Abstract

To understand the effect of substrate microstructure on the formation of TiO2 nanotubes, anodic oxidizations of commercially pure titanium subjected to surface mechanical attrition treatment (SMATed-Ti) and unSMATed-Ti in a glycol solution containing NH4F and small amounts of water were investigated. The SMATed-Ti exhibit a nanocrystallized surface layer containing a high density of grain boundaries compared with unSMATed-Ti. The anodization results show that the formed TiO2 nanotube layer on the SMATed-Ti is much thicker than that on the unSMATed-Ti. It is indicated that nanocrystallized Ti is propitious to the growth of TiO2 nanotubes; grain boundaries and dislocations play the leading role in accelerating the reaction rate and ion diffusion coefficient during anodization. In addition, nanocrystallization of Ti does not change surface morphologies and phase components of the TiO2 nanotubes.

Antibacterial activity and cytocompatibility of Cu–Ti–O nanotubes

“…Limited researches have shown that microstructure of Ti substrate may influence the growth rate and formation ability of TiO 2 NTs . The microstructure of sputtered Ti films is controlled by atoms adsorption/deposition and surface/bulk diffusion behaviors on substrates during deposition process.…”

“…Limited researches have shown that microstructure of Ti substrate may influence the growth rate and formation ability of TiO 2 NTs. 22,23 The microstructure of sputtered Ti films is controlled by atoms adsorption/deposition and surface/ bulk diffusion behaviors on substrates during deposition process. These behaviors are closely related with the deposition parameters such as temperature, bias, pressure and target power, among which temperature is most important to determine the diffusion behavior and therefore the microstructure of the sputtered films.…”

Double side nanostructuring of microcantilever sensors with TiO2-NTs as a route to enhance their sensitivity

“…These interfaces may act like passages for the interstitial rapid diffusions of O 2according to the diffusion theory that may facilitate chemical reaction between Ti 4+ and O 2improving the growth of TiO 2 -NTs as observed in a previous report. 37 Moreover, as we used only one counter electrode during anodization process, the local electric field is consequently different between the two sides of the microcantilever which could lead to modify the dimensions of NTs on both sides. Further experiments are necessary to explain completely the mechanism of reaction during this step.…”

TiO2 Nanotubes: Recent Advances in Synthesis and Gas Sensing Properties

“…Pure titanium subjected to surface mechanical attrition treatment (SMAT-Ti) (Figure 7) and untreated were anodized in a glycol solution containing NH 4 F and small amounts of water [55]. Ti plates were annealed at 750 °C for 5 h to eliminate any residual deformation.…”