锂(药物)
吸附
共价有机骨架
共价键
盐(化学)
材料科学
电解质
芘
化学工程
选择性
无机化学
离子交换
离子
化学
有机化学
电极
催化作用
物理化学
医学
工程类
内分泌学
作者
Ataf Ali Altaf,Ahmadreza Khosropour,Amin Zadehnazari,Alireza Abbaspourrad
标识
DOI:10.1021/acsami.3c01051
摘要
The increasing pressure for lithium resources from the electric vehicle and nuclear energy industries means that new technologies to separate Mg2+ from Li+ from salt water are in demand. To address this need, we fabricated lithium pyrene squarate covalent organic frameworks (Li-SQCOFs) to separate Mg2+/Li+ mixtures from salt water. We optimized the effect of the electrolyte and the amount of the adsorbent and then carried out a kinetics study on the adsorbent recovery at various pH levels using both batch and continuous flow adsorption methods. Li-SQCOF was found to have excellent selectivity for solutions containing a mixture of Mg2+/Li+ ions. This work represents a unique path for the separation of Mg2+/Li+ through direct adsorption using a covalent organic framework (COF). The COF-supported ultrafiltration bed made in this study gave a Mg2+ separation flux of 60.5 h-1 m-2.
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