Highly efficient removal of ionic dyes in aqueous solutions using magnetic 3D reduced graphene oxide aerogel supported nano zero-valent iron

This study aims to develop three-dimension reduced graphene oxide aerogel supported nano zero-valent iron (rGOA-nZVI) by hydrothermal and liquid phase reduction approach applies it the removal of two typical dyes, methylene blue (MB) methyl orange (MO) from aqueous solutions. The obtained magnetic rGOA-nZVI composites were characterized scanning electron microscopy (SEM), atomic force microscopy, Brunauer-Emmett-Teller, X-ray diffraction Fourier transform infrared spectroscopy, its efficiencies for MB MO solutions evaluated. processes could be completed within 30 min, which well described pseudo-second order kinetic model. nanocomposites exhibited remarkable performance (the maximum adsorption amount, <i>q</i><sub>max</sub> = 3918 mg/g) (<i>q</i><sub>max</sub> 667 in a wide pH range (pH 1.0-10.0). Furthermore, is stable recyclable with high dye (> 90%) after five cycles. mechanisms demonstrated SEM XRD analyses before removal. showed that rGOA acts as an excellent carrier nZVI, are efficient materials advanced treatment wastewater over range.