Research progress on nanofiber-based support layers in forward/osmosis composite membranes
Nanofiber-based forward/reverse osmosis composite membranes have attracted significant interest in membrane separation,with their unique structure and properties offering innovative prospects for the advancement of membrane technology.These membranes,manufactured from nanofiber support layers utilizing single or multiple polymer materials in combination with nanomaterial incorporation,surface modification,and intermediary layer integration,effectively enhanced their porosity and three-dimensional pore structure,thus achieving efficient solute retention and flux increase.The application of nanofiber-based composite membranes in water treatment holds promise for cost reduction and efficiency improvement,aligning with China's energy-saving and emission-reduction policies,as well as addressing the pressing need for efficiency improvement and energy consumption reduction in water treatment.Herein,the preparation techniques of nanofibers were described,with emphasis on structural design and functional modulation.The current research status concerning nanofibers as support layers in forward/reverse osmosis membranes and their effect on membrane performance were then thoroughly elucidated.The application of nanofiber forward/reverse osmosis composite membranes in the field of seawater desalination,water treatment,agricultural irrigation was further summarized.Finally,the existing challenges and improvement directions were highlighted,while the future development prospects and application potential were discussed.
nanofiberssupport layersconcentration polarizationmodification of support layersforward/reverse osmosis
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