Highly efficient removal of trace lead (II) from wastewater by 1,4-dicarboxyb enzene modifie d Fe/Co metal organic nanosheets

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) (Pb2+) 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 Pb2+ 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 promi-nent performance of in the removal of trace Pb2+ makes FeCo@BDC an ideal candidate as commercial adsorbent materials. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

Automated summary

FeCo@BDC, a novel Fe/Co metal organic complex nanosheet modified by 1,4-dicarboxybenzene (BDC), shows highly efficient removal performance for trace Pb2+ in neutral aqueous solutions, with removal rates over 95% and adsorption equilibrium achieved in 15 minutes. The adsorption of Pb2+ follows Langmuir model and pseudo-second-order model, with a maximum adsorption capacity of 220.48 mg g(-1). FeCo@BDC also demonstrates excellent regeneration performance, making it an ideal candidate for commercial adsorbent materials.