Abstract：Magnetic few layered graphene (MFLG) was facilely prepared using a simple in-situ co-precipitation method. The as prepared MFLG was employed as a potential adsorbent towards aqueous Ni(II) and Pb(II). The adsorptions of Ni(II) and Pb(II) with a same initial concentration 200 mg·L-1 onto MFLG with a dosage 500 mg·L-1 equilibrated in 5 min at 25 ℃, the adsorption percent and quantity of Ni(Ⅱ) were 97.91 % and 391.63 mg·L-1, those of Pb(Ⅱ) were 93.40 % and 373.59 mg·L-1, respectively. No obvious performance decay occurred after three consecutive cycles. The Freundlich isotherm model and the pseudo-second-order kinetic model were most suitable for describing the adsorptions of the two metals by MFLG in terms of equilibrium state and non equilibrium state, respectively. Moreover, the adsorptions were spontaneous and exothermic chemisorption. Owing to the advantages as high adsorption capacity, ultrafast kinetics and reusability, FLMG may be a promising adsorbent towards aqueous heavy metals for practical application.
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