In this study, a self-organized nanotubular titanium dioxide (TiO₂) array was successfully produced by anodizing pure titanium in a mixture of glycerol, distilled water (8 vol.), and ammonium fluoride using a dual electrode system. The size control and distribution of the nanopores were performed in a DC voltage range varying from 30V to 60V. The diameter of TiO₂ nanopores varies from 59 to 128nm depending on the anodizing voltage. Energy-dispersive X-ray spectroscopy (EDX) analysis reveals that the as-prepared films are essentially composed of TiO₂. According to the X-ray diffraction (XRD) and Raman spectroscopy analysis, the nanotubular arrays of TiO₂ annealed at 600C for 2 hours are composed of a phase mixture of anatase and rutile. Mott-Schottky analysis showed that the TiO₂ nanotubes are consistent with an n-type semiconductor with a donor density of about 10¹⁷cm^-3. Preliminary results on the photocatalytic degradation of a pharmaceutical pollutant showed that the TiO₂ nanotubes can be used as a promising material for application in wastewater treatment.

This study reports the synthesis and characterization of a new Schiff base derivative, 2-(5-methyl-1H-pyrazol-3-yl)-N′-(2-(5-methyl-1H-pyrazol-3-yl)acetyl)acetohydrazide (AA3).