photocatalytic degradation of amoxicillin drug using zno/cds nanocomposite for aqueous solutions by using aops

The hydrothermal synthesis of zno/cds nanocomposite studied for photocatalytic degradation of amoxicillin (amx) drug. the physical and chemical properties of the prepared zno/cds were characterized using several analyses such as tem, fe-sem, tga, and edx. the photodegradation of amoxicillin (amx) drug was studied by employing uv-vis light under several conditions in the presence of zno-cds nanocomposite. influence of several parameters such as amx concentration (10-80 mg/l), mass of nanocomposite (0.1-0.4 g), and regeneration of zno-cds nanocomposite was studied and optimized. all experiments were carried out under the most optimum conditions, which included a drug concentration of 30 mg/l, a light intensity of 1.2 mw/cm2, and a solution ph of 6.8. the results showed that the photocatalytic efficiency rose with reducing concentration of amx (95.99%-53.12%) when concentration increased from 10 to 80 mg/l. the photocatalytic degradation increased when the weight of the zno-cds nanocomposite increased (44.43%-98.99%). it was observed that the photocatalytic efficiency of amx was 80.86%-72.77.85% for the first to fourth cycles. this indicates the best stability of nanocomposites and could be potentially useful in practical batch degradation.