层状双氢氧化物
离子交换
吸附
水溶液
离子键合
降水
螯合作用
无机化学
化学
化学工程
离子
有机化学
物理
气象学
工程类
作者
Shihao Cui,Yutao Peng,Xiao Yang,Xing Gao,Chung‐Yu Guan,Beibei Fan,Xue Zhou,Qing Chen
标识
DOI:10.1080/10643389.2022.2070402
摘要
Layered double hydroxides (LDHs) and LDHs-derived materials are emerging as potential engineered adsorbents for the protection of water environment. Particularly, LDHs intercalated with different guest compounds (GC-LDHs), which differ from traditional interlayer anions (such as Cl−, SO42−, NO3−, CO32−, and PO43−), are widely reported by recent studies showing their promising multifunctional roles in water purification. Herein, this review systematically presents the synthesis methods and characterization techniques of GC-LDHs and their application as adsorbents in removing potentially toxic elements (PTEs) from the aqueous phase. This review also elaborates on the important roles of complexation, chelation, precipitation, isomorphic substitution, and ion exchange in the process of PTE removal by GC-LDHs. Among them, compared with PTE cations, ion exchange is an additional mechanism for the removal of PTE oxyanions by GC-LDHs. Furthermore, the influence of pH, ionic strength, temperature, physiochemical properties of original LDHs and guest compounds on the GC-LDHs adsorption performance are also summarized. Finally, the development trends and future challenges related to GC-LDHs are proposed.
科研通智能强力驱动
Strongly Powered by AbleSci AI