【摘 要】
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Nowadays,continuous population growth,industrialization and climate change have become great challenges to our freshwater resources.In response,desalination of saline water could provide a solution for human being to curb this environmental crisis.Cur-ren
【机 构】
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Institute of Fundamental and Frontier Sciences,University of Electronic Science and Technology of Ch
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Nowadays,continuous population growth,industrialization and climate change have become great challenges to our freshwater resources.In response,desalination of saline water could provide a solution for human being to curb this environmental crisis.Cur-rently,reverse osmosis(RO)is the mainstream technology for water desalination.Significant improvement has been gained in terms of productivity and energy efficiency with the advent of thin-film composite(TFC)membranes[1,2].However,further per-formance enhancement for TFC membranes is hindered by a long-standing and unresolved issue,i.e.,the permeability-selectivity trade-off,meaning highly permeable membranes have low selec-tivity and vice versa.This issue mainly originates from the solution diffusion mechanism governing the solute transport and broad dis-tribution of free-volume elements in the membranes[3].These inherent materials limitations require a different type of mem-brane to tackle the trade-off.Therefore,in recent years,great efforts have been spent on the development of artificial water-channel(AWC)membranes that purifies water via molecular sieving mechanism[4,5].Fig.1a summarizes common types of AWC-based two-dimensional(2D)nanosheets,laminates,and one-dimensional(1D)nanotubes mimicking biological channels,like aquaporins[3].Fig.1b-f summarizes recent progress for these AWC membranes for water desalination.
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