Abstract
TiO2 nanotube (TNT) arrays were fabricated in NaOH/fluoride/ethylene glycol (EG) electrolyte at 30 V and 60 V for 60 min via anodization method. Three different concentrations of NaOH were studied: 1 M, 1.5 M and 2 M. Self-organized, vertically aligned and uniform nanotubes were produced for all samples but longer nanotubes were formed when 60 V was used instead of 30 V. The fabricated TNTs at 60 V were used as photoanode in a photoelectrochemical (PEC) cell. PEC cell with photoanode fabricated in 1 M NaOH/fluoride/EG electrolyte displayed photocurrent of 3.5 mA/cm2 under light illumination.
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