Main Article Content
Titanium dioxide nanotubes (TNTs) were prepared from titanium (Ti) plate by anodization with varying proportions of water (0-20 wt%) mixed in glycerol (GR), and fixed NH4F concentration at 2.5 wt% as electrolyte. Anodization process was carried out at potentiostatic of 30 V for 60 min of all samples. The surface morphology and crystal structure of TNTs were investigated by field emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD), respectively. The results showed that the increase of diameter and decrease of density of TNTs were strongly depended on the increase of water proportion. The crystal structure of TNTs was slightly changed from Ti to TiO when adding water in the electrolyte solution. These results were affected from an increase of current density by ionized water during anodization process when increasing water mixture in GR. Moreover, the increase of water affected the increase of water drop angle on TNTs surface, which showed hydrophobic property of the surface.
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