Effect of electrolysis conditions on photocatalytic activities of the anodized TiO2 films

The effect of concentration of H3PO4 on the photocatalytic activity of the anodized TiO2 films was investigated. The pre-nitrided titanium plates were anodized in electrolyte of 1.5 M H3PO4 and 0.3 M H2O2 with varying H3PO4 concentration in the range from 0 to 0.5 M. The highest photocatalytic activity was obtained at H3PO4 concentration of 0.1 M.