A two-dimensional montmorillonite membrane with carbon nanotube for fast and efficient separation of Li+ and Mg2+

被引：0
作者：
Chen, Licai [1 ]
Zhao, Yunliang [1 ,2 ]
Wang, Shutong [1 ]
Wang, Wenbo [1 ]
Zhang, Lingjie [1 ]
Wen, Tong [1 ]
Wang, Zhenlei [1 ]
Cheng, Shuai [3 ]
Song, Yuhan [1 ]
Zhang, Tingting [4 ]
机构：
[1] Wuhan Univ Technol, Sch Resources & Environm Engn, 34 Wenzhi St, Wuhan 430070, Hubei, Peoples R China
[2] Wuhan Clayene Technol Co Ltd, 36 Tangxunhu North Rd, Wuhan 430223, Hubei, Peoples R China
[3] State Dev Investment Xinjiang Lop Nur Potash Corp, Jianshe West 16 Rd 68, Hami 839000, Xinjiang, Peoples R China
[4] Wuhan Polytech Univ, Sch Chem & Environm Engn, 68 Xuefu South Rd, Wuhan 430023, Hubei, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2025年 / 869卷
基金：
中国国家自然科学基金;
关键词：
Thin-film nanocomposite membrane; Montmorillonite nanosheets; Interlayer; Carbon nanotubes; Separation of Li+ and Mg2+; NANOFILTRATION MEMBRANE; TRANSPORT;
D O I：
10.1016/j.cplett.2025.142063
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A membrane for fast and efficient separation of Li+ and Mg2+ was successfully prepared by constructing a thin montmorillonite nanosheets (MMTNS) interlayer with carbon nanotubes (CNTs) onto PES substrate. The introduction of MMTNS interlayer decreased the thickness of polyamide layer formed between polyethyleneimine and trimesoyl chloride as well as improved the hydrophilicity of membrane. CNTs expanded the interlayer spacing of MMTNS interlayer and shortened the length of water channels. The optimal CNTs/MMTNS/PA membrane demonstrated high Li+/Mg2+ separation performance with a selectivity of 20.71, and exhibited a permeability of 22.45 L m-2 h- 1, nearly double that of MMTNS/PA membrane.
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页数：10
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