Nano-manganese oxide-functionalized-oleyl amine as a simple and low cost nanosorbent for remediation of ZnII/CoII and their radioactive nuclides 65Zn and 60Co from water.

The contribution of oleyl amine as a biodegradable and simple aliphatic compound containing amine functional group (-NH2) was discussed in this work with respect to the remediation process of heavy metal ions from aqueous solution. Manganese oxide nanoparticles were synthesized via combustion synthesis and then functionalized with oleyl amine to form a new nanosorbent (NMn3O4-OA).The characteristics of this nanosorbent were examined using different instruments, such as Fourier-transform infrared spectroscopy, thermal gravimetric analysis, X-ray powder diffraction and high-resolution transmission electron microscopy. The HR-TEM images confirmed nanoscale range for NMn3O4-OA between 41.30 and 61.86 nm. The influence of diverse parameters on remediation of ZnII/CoII was examined, involving pH of metal ion solutions (pH 1-7), reaction time (1-60 min), solid amount (5-100 mg) and ionic concentration (0.1-2.0 mol/L). The optimum conditions were found pH 7 and 5-20 min reaction time for the two metal ions. The maximum capacities for adsorptive remediation were found 202 and 100 mgg-1for ZnII and Co II, respectively.