A typical EDX spectrum of AC is presented in Fig. 2c, and as shown oxygen and carbon can be detected. The quantitative analysis gives weight ratios of C (93.6%) and O (6.4%). The EDX spectrum of MAC nano-composite (Fig. 2d) indicates the presence of iron, oxygen and carbon confirming the formation of iron oxide on the surface of AC. The coated Fe content was determined as 51.3%.