Fabrication of tungsten-iron-doped TiO2 nanotubes via anodization: new photoelectrodes for photoelectrochemical cathodic protection under visible light‏

Fabrication of tungsten-iron-doped TiO₂ nanotubes via anodization: new photoelectrodes for photoelectrochemical cathodic protection under visible light

Mohamad Mohsen Momeni, S Hamid Khansari-Zadeh, Hossein Farrokhpour

Abstract

The simultaneous doping of tungsten (W) and iron (Fe) into TiO2 nanotubes (W–Fe-TNTs) has been performed via one-step anodizing in different ratios of W and Fe in this work. The synthesized samples were characterized by the XRD, FE-SEM, EDX-mapping, and UV–Vis techniques which proved the appropriate formation of the doped samples. The photocathodic protection effect of the synthesized samples was also studied using electrochemical measurement techniques including OCP, chronoamperometry and Tafel polarization curves. The experimental results indicated that the samples could protect the 403SS from corrosion very well. The W–Fe-TNT sample with equal percentage of W and Fe showed the best photoelectrochemical anticorrosion effect for stainless steel under visible light illumination.

SN Applied Sciences