*2.5. Photocatalytic Experiments*

The UV chamber (Model, 2000), 12.7 cm × 12.7 cm, was purchased from DYMAX, Germany. A UV lamp (DYMAX, Wiesbaden, Germany) that had a 400 W UV–mercury lamp. It generated a continuous spectrum of 320–400 nm with a measuring intensity of 225 mW/cm2. Batch experiments were carried out in 500 mL quartz beakers, where the light source was held perpendicular to the batch reactor. Both catalytic and noncatalytic

degradation was measured under identical conditions. Before absorption analysis, samples were collected at regular intervals and centrifuged (5000 rpm, 10 min). Then, the concentration of AT and PR were determined by measuring the absorbance (spectrophotometer UV-1900 Shimadzu, Marne La Vallée, France) at 224 and 288 nm, respectively.
