With minor modifications, CM-β-CD-MNP was synthesized according to published methods. With rapid stirring at a speed of 1200 rpm, 0.57 g FeCl2.4H2O, 1.57 g FeCl3.6H2O, and 1 g CM-β-CD were dissolved in 26.7 ml distilled water. As the reaction mixture reached 90 °C, 3.5 mL liquid ammonia (25%) was added in drops. The reaction was held at 90 °C for 1 hour with continuous stirring. The nanoparticles were then washed in distilled water to eliminate any unreacted contaminants before being dried in a 70 °C oven.