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Interlayer Anions of Layered Double Hydroxides as Mobile Active Sites To Improve the Adsorptive Performance toward Cd2+

文献类型：期刊论文

作者Laipan, Minwang6; Chen, Qingze3,4,5; Wang, Ziyu6; Zhang, Min6; Yuan, Mengyao6; Zhu, Runliang3,4,5; Sun, Luyi1,2
刊名INORGANIC CHEMISTRY
出版日期2023
卷号62期号:34页码:13857-13866
关键词HEAVY-METAL IONS WASTE-WATER SORPTION ZN CD(II) SINGLE PHOSPHATE FE(II) LDH NANOPARTICLES
ISSN号0020-1669
DOI10.1021/acs.inorgchem.3c01681
英文摘要Layered double hydroxides (LDHs) have been considered important sinks for ionic contaminants in nature and effectively engineered adsorbents for environmental remediation. The availability of interlayer active sites of LDHs is critical for their adsorptive ability. However, inorganic LDHs generally have a nano-confined interlayer space of ca. 0.3-0.5 nm, and it is unclear how LDHs can utilize their interlayer active sites during the adsorption process. Thus, LDHs intercalated with SO42-, PO43-, NO3-, Cl-, or CO32- were taken as examples to reveal this unsolved problem during Cd2+ adsorption. New adsorption behaviors and pronounced differences in adsorption performance were observed. Specifically, SO42-/PO43- intercalated LDHs showed a maximum Cd2+ adsorption capacity of 19.2/9.8 times higher than other LDHs. The ligand exchange of H+ (on the surface ?OH) by Cd2+ and formation of Cd-SO42-/PO43- complexes led to the efficient removal of Cd2+. Interestingly, interlayer SO42- was demonstrated to be able to move to the edges/outer surfaces of LDHs, providing abundant movable adsorption sites for Cd2+. This novel phenomenon made the SO42- intercalated LDH a superior adsorbent for Cd2+ among the tested LDHs, which also suggests that LDHs with a nano-confined interlayer space can also highly utilize their interlayer active sites based on the mobility of interlayer anions, offering a new method for constructing superior LDH adsorbents. ? 2023 American Chemical Society
WOS研究方向Chemistry, Inorganic & Nuclear
语种英语
WOS记录号WOS:001049530100001
源URL[http://ir.gig.ac.cn/handle/344008/80265]  
专题中国科学院矿物学与成矿学重点实验室
作者单位1.Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs; CT; 06269, United States
2.Polymer Program, Institute of Materials Science, University of Connecticut, Storrs; CT; 06269, United States
3.University of Chinese Academy of Sciences, Beijing; 100049, China
4.CAS Center for Excellence in Deep Earth Science, Guangzhou; 510640, China
5.CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640, China
6.School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi’an; 710021, China
推荐引用方式
GB/T 7714		 Laipan, Minwang,Chen, Qingze,Wang, Ziyu,et al. Interlayer Anions of Layered Double Hydroxides as Mobile Active Sites To Improve the Adsorptive Performance toward Cd2+[J]. INORGANIC CHEMISTRY,2023,62(34):13857-13866.
APA Laipan, Minwang.,Chen, Qingze.,Wang, Ziyu.,Zhang, Min.,Yuan, Mengyao.,...&Sun, Luyi.(2023).Interlayer Anions of Layered Double Hydroxides as Mobile Active Sites To Improve the Adsorptive Performance toward Cd2+.INORGANIC CHEMISTRY,62(34),13857-13866.
MLA Laipan, Minwang,et al."Interlayer Anions of Layered Double Hydroxides as Mobile Active Sites To Improve the Adsorptive Performance toward Cd2+".INORGANIC CHEMISTRY 62.34(2023):13857-13866.

入库方式： OAI收割

来源：广州地球化学研究所

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