Histidine functionalized MIL-53(Al) for lead(ii) removal from aqueous solution

In the present study, the preparation of a new MOF material His-MIL-53(Al) and its performance in the adsorption of Pb(ii) from aqueous solution were investigated. The original material MIL-53(Al) was directly grafted with histidine to obtain the modified MOF material His-MIL-53(Al). The results show that His-MIL-53(Al) has excellent adsorption performance for Pb(ii), and the adsorption process is in accordance with the pseudo first-order kinetics and the Langmuir adsorption model, with a maximum adsorption capacity of 50.13 mg g(-1), which is much larger than the adsorption capacity of the original material MIL-53(Al). The experimental results also show that the prepared material has good recoverability. Our work demonstrates the applications of His-MIL-53(Al) as a promising material in the adsorption of heavy metals.

Automated summary

In this study, a new MOF material, His-MIL-53(Al), was prepared and its performance in the adsorption of Pb(ii) from aqueous solution was investigated. The modified MOF material, His-MIL-53(Al), showed excellent adsorption performance for Pb(ii) with a maximum adsorption capacity of 50.13 mg g(-1), which is much higher than the original material, MIL-53(Al). The results also demonstrated that the prepared material has good recoverability.