*3.3. Synthesis of Binary CdTiO<sup>2</sup> Nanocomposites*

CdTiO<sup>2</sup> nanocomposites were synthesized via co-precipitation method. Cadmium (II) chloride hemi(pentahydrate) (0.030 mol, 6.85 g) was added to the deionized water (250 mL) and the mixture was stirred for 30 min at room temperature. The pH (9–10) of the mixture was adjusted by dropwise addition of 1 M NaOH solution. The precipitates formed during the process were centrifuged, separated and washed with deionized water followed by ethanol washing. The precipitates were dried in an oven at 80 ◦C for 5 h and annealed at 500 ◦C for 4 h. The resultant CdO NPs (0.01 M) were dispersed in methanol (5 mL) via sonication for 30 min. The dispersion was added to the TiO<sup>2</sup> (1 M) dispersion made in 5 mL methanol. The mixture was stirred at 80 ◦C for 30 min and the precipitates formed were separated via centrifuge. The CdTiO<sup>2</sup> binary nanocomposites obtained were kept overnight and oven dried at 100 ◦C for 2 h.
