Comprehensive understanding of guest compound intercalated layered double hydroxides: Design and applications in removal of potentially toxic elements

被引：7
作者：
Cui, Shihao [1 ]
Peng, Yutao [2 ]
Yang, Xiao [3 ]
Gao, Xing [4 ]
Guan, Chung-Yu [5 ]
Fan, Beibei [1 ]
Zhou, Xue [1 ]
Chen, Qing [1 ]
机构：
[1] China Agr Univ, Coll Resources & Environm Sci, Beijing Key Lab Farmland Soil Pollut Prevent & Re, Beijing 100193, Peoples R China
[2] Sun Yat Sen Univ, Sch Agr, Shenzhen, Guangdong, Peoples R China
[3] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China
[4] Tongji Univ, Sch Environm Sci & Engn, State Key Lab Pollut Control & Reuse, Shanghai, Peoples R China
[5] Natl Ilan Univ, Dept Environm Engn, Yilan, Taiwan
来源：
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY | 2023年 / 53卷 / 04期
关键词：
Adsorption; intercalated LDHs; potentially toxic elements; Yu (Frank) Yang and Lena Ma; HEAVY-METAL IONS; X-RAY-DIFFRACTION; EFFICIENT REMOVAL; AQUEOUS-SOLUTION; SELECTIVE REMOVAL; ANION-EXCHANGE; SIMULTANEOUS ADSORPTION; HYDROTHERMAL SYNTHESIS; ACID ANIONS; COPPER IONS;
D O I：
10.1080/10643389.2022.2070402
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
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.
引用
收藏
页码：457 / 482
页数：26
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