Highly efficient removal of trace lead (II) from wastewater by 1,4-dicarboxybenzene modified Fe/Co metal organic nanosheets

• Published in: Journal of materials science & technology 2022-01, Vol.98, p.212-218
• Main Authors: Hong, Junmao, Kang, Le, Shi, Xiaofeng, Wei, Renbo, Mai, Xianmin, Pan, Duo, Naik, Nithesh, Guo, Zhanhu
• Format: Article
• Language: English
• Subjects: Adsorption; Lead(II); Metal organic complex; Nanosheet; Trace level
• ISSN: 1005-0302; 1941-1162
• DOI: 10.1016/j.jmst.2021.05.021

•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 Pb2+.•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) (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 prominent performance of in the removal of trace Pb2+ makes FeCo@BDC an ideal candidate as commercial adsorbent materials. [Display omitted]