抄録
The photoelectrochemical behavior of sol-gel formed TiO2 film was studied, to improve photocatalysis. TiO2 film baked at 773K was confirmed to be anatase, showing n-type semiconductivity under illumination. TiO2 photopotential was reduced to -400mV vs. Ag/AgCl under UV illumination; when the lamp turn off, it gradually increased to the initial potential over a day.
Above phenomenon was found more effective in TiO2 coated on oxygen ion implanted stainless steel substrate.
