Preparation and characterization of CrFeWTiO photoanodes and their photoelectrochemical activities for water splitting.

The chemical bath deposition (CBD) method was successfully applied to prepare WTiO nanotube arrays co-deposited with chromium, iron and chromium-iron nanoparticles. Various methods have been used in the characterization of synthetic co-deposited nanostructures. WTiO nanotubes can keep the nanotubular structures at low iron concentration in the CBD solution, as indicated by our FESEM results.