Abstract
• A novel Fe/Co metal organic nanosheet (FeCo@BDC) modified by 1,4-dicarboxybenzene (BDC) and triethylamine (TEA) was prepared. • FeCo@BDC achieved the highly efficient adsorption for trace Pb 2+ . • FeCo@BDC shows prominent regeneration performance. • The introduced BDC and TEA enhanced the removal performance. A novel Fe/Co metal organic complex nanosheet modified by 1,4-dicarboxybenzene (BDC), i.e., FeCo@BDC, was prepared, and highly efficient removal performance for trace lead (II) (Pb 2+ ) was demonstrated in the neutral aqueous solutions. The removal rates were higher than 95% and the adsorption was equilibrated in 15 min. The isotherms and kinetics for the adsorption Pb 2+ by the FeCo@BDC adsorbents followed Langmuir model and pseudo-second-order model, respectively. The maximum adsorption capacity was 220.48 mg g −1 . The FeCo@BDC adsorbents also own a prominent regeneration performance. The prominent performance of in the removal of trace Pb 2+ makes FeCo@BDC an ideal candidate as commercial adsorbent materials.
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