The spectroscopic studies reveal that the GO–Fe 3 O4 nanocomposite is a highly efficient adsorbent for MB removal from aqueous solution, providing an adsorption capacity of mg/g, and the equilibrium for MB adsorption is attained in ∼70 min. Moreover, it is a magnetically separable and reusable material for MB removal from water, preserving 87% of its initial efficiency after 5 successive runs. |