Preparation and characterization of TiO2 nanotubes catalyst support and doped TiO2 nanotubes arrays sheet

Abstract EN

Highly ordered titanium oxide nanotubes (TONTs) were synthesized via the electrochemical anodic oxidation.

The as-anodized TONTs were consequently annealed at 450 °C in ambient air and N 2 for 3 hrs to obtain titanium oxide nanotubes annealed in air (TONTs- air) and titanium oxide nanotubes annealed in nitrogen (TONTs- N2).

V-doped and W-doped TiO2 nanotubes arrays were synthesized via in situ doping method during anodization.

All samples were annealed at 450 °C in ambient air and N2 for 3hrs to obtain TONTs-air 10 mM Vanadium, TONTs-N2 10 mM Vanadium, TONTs-air 10 mM Tungsten and TONTs-N2 10 mM Tungsten.

The physicochemical characterization of the TONTs-arrays and doped-TONTs-arrays catalyst support were performed by X-ray diffraction (XRD) and scanning electron microscopy (SEM).

The TONTs-arrays, doped- TONTs-arrays catalyst support were electrochemically characterized by typical current density-time (I-t) during anodization and also characterized in ferro- fericcyanide potassium system by cyclic voltammetry (CV) measurement.

In addition, V-doped titanium oxide nanotubes arrays were photo chemically characterized and supporting electrolyte is 1M KOH.