*2.3. Synthesis of Ag/TiO2*

Ag/TiO2 nanocomposite was synthesized utilizing UV technology [26]. Oxalic acid (0.005 mol/L) and AgNO3 (0.0002 mol/L) in DW were mixed with a suspension of the above-prepared TiO2 NPs (1 g). After stirring for 15 min, the mixture was added to

DW (450 mL) with vigorous stirring. The pH was adjusted in the range of 6.8–7.0 using NaOH(aq). The admixture was irradiated with UV supply for 60 min. The admixture was then placed to settle down for 8 h to form a brownish precipitation of Ag0/TiO2, which was filtered and dried at 120 ◦C for 3 h to give Ag/TiO2.
