Fabrication of magnetic ferroferric oxide-based composite for efficiently removing and recycling ciprofloxacin

The extensive use of antibiotics and recklessly discarding have caused serious water pollution. Its controlling and remedying become an urgent problem. With the goal of removing ciprofloxacin hydrochloride (HCIP), a magnetic adsorbent of Fe 3 O 4 @Mg(OH) 2 was prepared via a facile approach in this work. The structure and morphology were systematically characterized by XRD, SEM, FT-IR and XPS. It is found hexagonal Mg(OH) 2 flakes are evenly coating on the surface of Fe 3 O 4. This structured morphology offers Fe 3 O 4 @Mg(OH) 2 high specify surface area. The composite shows excellent removal performance. It achieves almost 99 % HCIP elimination within 1.5 h. The influence of the dosage of adsorbents, pH and interfering ions and reusability were fully studied. It is shown that the composite can be used in neutral condition and has long serve life. The cost effective synthesis, simple operation, high adsorption rate and long serve life make Fe 3 O 4 @Mg(OH) 2 wide application for water treatment in a large scale.