Abstract
Owing to the unique microstructure and high specific surface area, activated carbon (AC) could act as an excellent adsorbent for wastewater treatment and good carrier for functional materials. In this paper, manganese–zinc ferrites (Mn0.5Zn0.5Fe2O4: MZF) were anchored into AC by hydrothermal method, resulting in the excellent magnetic response for AC nanocomposites in wastewater treatment. All results demonstrated the magnetic nanoparticles presented a spinel phase structure and existed in the pores of AC. The saturation magnetization (Ms) of MZF/AC nanocomposites increased with the ferrites content, while the pore volume and specific surface area declined. The Sample-5 possessed the specific surface area of 1129m2g−1 (close to 1243m2g−1 of AC) and Ms of 3.96emug−1. Furthermore, the adsorptive performance for organic dyes was studied and 99% methylene blue was adsorbed in 30min. The magnetic AC nanocomposites could be separated easily from solution by magnetic separation technique.
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