photodegradation of human serum albumin by fe3o4/ zno/ag nanocomposite

Fe3o4/ zno/ag magnetic nanocomposite was synthesized for the first time and its ability was evaluatedfor photocatalytic degradation of albumin in aqueous solutions under uv-a light. the resultingnanoparticles were then characterized using x-ray diffraction (xrd), scanning electron microscopy(fesem), vibration magnetometer (vsm), and fourier infrared (ftir). the effects of some parameterssuch as ph, initial albumin concentration, catalyst concentration, and temperature were also investigatedin the photodegradation of albumin. the results showed that the maximum removal of albumin wasobtained at ph 9, catalyst concentration of 0. 5 g/l, initial albumin concentration of 150 mg/l, and roomtemperature in 90 min. under the optimum conditions, the total amount of organic carbon (toc) was56%. kinetic degradation experiments followed the pseudo-first-order kinetic model with a constant rate(k) of 0.0255 min-1. therefore, due to the high performance of fe3o4/ zno/ag magnetic nanocomposite inthe degradation of albumin as well as its easy synthesis and separation with an external magnetic field, itcan be used as a suitable and environmentally friendly catalyst for the degradation of organic and resistantpollutants in the wastewater.