Li Biao, Xu Xiaozhi, Yang Zeya, Lu Jun, Han Jingbin
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 100029, Beijing, China.
Quzhou Institute for Innovation in Resource Chemical Engineering, 324000, Quzhou, China.
Chempluschem. 2024 Mar;89(3):e202300521. doi: 10.1002/cplu.202300521. Epub 2023 Nov 15.
The use of two-dimensional materials shows great promise for the development of next-generation membrane materials, thanks to their atomic thinness and the ease with which precise nanochannels can be constructed. Among these materials, layered double hydroxides (LDHs) stand out as an important class, possessing many features that make them ideal for constructing high-performance membranes. LDHs offer many advantages, such as their abundant and tunable interlayer anions, which enable the preparation of membranes with adjustable sub-nanometer pore sizes. Additionally, their hydrophilicity and positive charge characteristics afford them unique benefits. LDHs have been found to be effective in gas separation, ion sieving, and nanofiltration. This review provides a summary of the latest progress in using LDHs for membrane separation. It begins by introducing the basic properties of LDHs, followed by the assembly strategy for LDH membranes. Furthermore, the review presents the research status of LDHs membranes in various fields in a systematic manner. Lastly, the paper highlights some challenges and future prospects for preparing and applying LDHs membranes.
二维材料的应用在下一代膜材料的发展中展现出巨大潜力，这得益于其原子级的薄度以及构建精确纳米通道的简易性。在这些材料中，层状双氢氧化物（LDHs）作为一类重要材料脱颖而出，具有许多使其成为构建高性能膜理想材料的特性。LDHs具有诸多优势，例如其丰富且可调节的层间阴离子，这使得制备具有可调节亚纳米孔径的膜成为可能。此外，它们的亲水性和正电荷特性赋予了它们独特的优势。已发现LDHs在气体分离、离子筛分和纳滤方面有效。本综述总结了使用LDHs进行膜分离的最新进展。首先介绍了LDHs的基本性质，接着阐述了LDH膜的组装策略。此外，该综述系统地呈现了LDHs膜在各个领域的研究现状。最后，本文强调了制备和应用LDHs膜面临的一些挑战以及未来前景。
