期刊
JOURNAL OF MEMBRANE SCIENCE
卷 567, 期 -, 页码 89-103出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2018.09.041
关键词
2D-materials separation membranes; Gas separation; Liquid separation; Layered double hydroxides
资金
- National Natural Science Foundation of China [21622607, 21176231, 21761132009]
- Thousand Youth Talents Program
- K.C. Wong Magna Fund in Ningbo University
Membrane-based technology represents an emerging strategy for energy-efficient gas/liquid separation. Among various factors, dimensionality and microstructure of membrane materials played a dominant role in determining their separation performance. Recently, unique structural properties of two-dimensional (2D) nano-materials with atomic size thickness are rapidly emerging as desirable building blocks for the design of high performance membranes. Among them, layered double hydroxides (LDHs), a representative of anionic clays, have attracted extensive interest and exhibited promising prospects for membrane applications due to their uniform interlayer galleries, which may permit precise molecular sieving in case the gallery height was comparable with kinetic diameters of guest molecules. Moreover, highly tunable chemical compositions and gallery height as well as the rich surface functionality of LDH building blocks further endowed them with unprecedented opportunities for efficient gas/liquid separation. This paper summarizes recent breakthrough in LDH-based separation membranes with particular emphasis on the opportunities and challenges facing their commercial applications.
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