en عمومى General مقاله اصیل Original Article <div style="text-align: justify;">Background: This study examined the removal of ciprofloxacin (CIP), which is a very widely used antibiotic, from an aqueous medium by applying AgI/Ag2O photocatalyst under visible light radiation.<br> Methods: AgI/Ag2O was synthesized conveniently by applying a two-stage precipitation method. The synthesized compound was characterized by X-ray powder diffraction (XRD), FE- field emission scanning electron microscopy (FE-SEM), energy dispersive x-ray (EDX), and UV-Vis spectrophotometry. Different parameters including initial pH of the solution, initial CIP concentration, reaction kinetics, and catalyst reusability were investigated.<br> Results: Concurrent use of AgI and Ag2O caused improved photocatalytic properties in the presence of UV light. The pH and initial concentration of CIP affected the process efficiency; 95% efficiency was achieved within 100 min at pH 9. Furthermore, the process efficiency was still maintained over 90% after four consecutive cycles.<br> Conclusion: The photocatalytic degradation process using AgI/Ag2O nanocomposite under visible light radiation is a suitable method for removing CIP from aqueous media due to its high efficiency and stability.</div> Ciprofloxacin, Nanocomposites, Photolysis, Catalysis, Antibiotic, Aqueous medium 311 318 http://ehemj.com/browse.php?a_code=A-10-1-258&slc_lang=en&sid=1 Mehdi Ahmadmoazzam mehdi.amoazzam@gmail.com 100319475328460010830 100319475328460010830 No Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Afshin Takdastan afshin_ir@yahoo.com 100319475328460010831 100319475328460010831 Yes Corresponding author: Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Abdolkazem Neisi knis1947@gmail.com 100319475328460010832 100319475328460010832 No Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Mehdi Ahmadi mehdiahd60@gmail.com 100319475328460010833 100319475328460010833 No Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Ali Babaei alibb8479@gmail.com 100319475328460010834 100319475328460010834 No Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Sahand Jorfi jor037413@gmail.com 100319475328460010835 100319475328460010835 No Department of Environmental Health Engineering, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran