Durability of Ag-TiO₂ Photocatalysts Assessed for the Degradation of Dichloroacetic Acid

Figure 8

Effect of recycling Ag-TiO₂ photocatalysts on observed photonic efficiencies at pH 3 and pH 10 (1st run ■, 2nd run , and 3rd run □), degradation of 1 mM DCA without any extra addition of chloride ions or washing technique performed. The photocatalyst concentration was 0.5 g/L with different silver loadings (atom%). The light intensity at pH 3 was 𝐼≈3.39×10⁻²Einstein L⁻¹h⁻¹ and at pH 10 was 𝐼≈3.74×10⁻²Einstein L⁻¹h⁻¹.