(3-Aminopropyl) Triethoxysilane (APTES) Functionalized Magnetic Nanosilica Graphene Oxide (MGO) Nanocomposite for the Comparative Adsorption of the Heavy Metal [Pb(II), Cd(II) and Ni(II)] Ions from Aqueous Solution

(3-Aminopropyl) triethoxysilane (APTES) modified magnetic graphene oxide was synthesized and applied in the adsorption of three heavy metals, Pb(II), Cd(II) Ni(II) from aqueous solution. An approach to prepare GO adopted by using (3-aminopropyl) as a functionalizing agent on nanosilica coupled with form Fe3O4@SiO2–NH2/GO nanocomposite. FT-IR, XRD, BET, UV, VSM, SAXS, SEM TEM were used characterize nanoadsorbents. Batch studies conducted investigate effect solution pH, initial metal ion concentration, adsorbent dosage contact time. The maximum equilibrium time found be 30 min for 60 Ni(II). kinetics showed that onto followed pseudo-second-order kinetics. All data well fitted Langmuir isotherm model monolayer capacity 13.46, 18.58 13.52 mg/g, respectively. adsorbents reused at least 7 cycles without leaching mineral core, showing enhanced stability potential application water/wastewater treatment.