Iron-tungsten/titania nanotube films for photoelectrochemical water splitting

Iron-tungsten/TiO2 nanotube photoelectrodes have been synthesised by the anodisation process followed by the chemical bath deposition technique in this work. X-ray diffraction analysis, field emission scanning electron microscopy, UV-Vis, energy-dispersive X-ray spectroscopy and photoelectrochemical (PEC) measurements have been used to characterise these photoelectrodes. The ratio of the iron-tungsten deposited on TiO2 nanotubes remarkably influences the PEC performance and the amount of hydrogen. The A1 photoelectrode showed the best PEC activity. The investigation of the recyclability of these new TiO2 nanotubes indicated good stability of their photocatalytic activity. A simple method for the synthesis of high-performance PEC photoelectrodes with good stability and reliability has been provided by this work.