Jellyfish-inspired alginate composite hydrogel filter prepared by macro-micro double bionic strategy for efficient water purification  

作　　者：Huiting Peng Yan Chen Jiaopan Lin Chelsea Benally Mohamed Gamal El-Din Junkai Gao 

机构地区：[1]School of Naval Architecture and Marinetime,Zhejiang Ocean University,Zhoushan 316022,China [2]Department of Civil and Environmental Engineering,University of Alberta,Edmonton,AB T6G 1H9,Canada

出　　处：《Frontiers of Environmental Science & Engineering》2024年第4期141-157,共17页环境科学与工程前沿（英文）

基　　金：received generous support from multiple sources,including the Zhejiang Provincial Natural Science Foundation of China(No.LY23D060004);the Science and Technology Planning Project of Zhoushan,China(Nos.2022C41005 and 2019C21007);the National Natural Science Foundation of China(No.51606168).

摘　　要：Recently,research on hydrogel materials with a porous structure and superior water absorption capabilities significantly grown.However,the hydrogel under gravity-driven separation conditions often exhibit an unstable pore structure,poor mechanical properties,and limited functionality.To this end,this work presents a novel approach that combines a macro-micro double bionic strategy with a triple crosslinking method to develop a multifunctional alginate composite hydrogel filter(2%-SA-κCG-PVA-Ca^(2+),2%-SKP-Ca^(2+)for short)with a stable pore structure and superior mechanical properties,which possessed an umbrella-shaped structure resembling that of jellyfish.The 2%-SKPCa^(2+)filter was synthesized using polyvinyl alcohol(PVA)as a stable structure-directing agent,and sodium alginate(SA)andκ-carrageenan(κ-CG)as polymer hydrogels.The distinctive umbrellashaped hydrogel of 2%-SKP-Ca^(2+)filter,formed through the triple crosslinking method,overcomes the limitations of unstable pore structure and poor durability seen in hydrogels prepared by traditional crosslinking methods.Furthermore,the utilization of the 2%-SKP-Ca^(2+)filter in water treatment demonstrates its good selective permeability,excellent resistance to fouling,and extended longevity,which enables it to simultaneously achieve the multifunctional water purification and the coating of multi-substrate anti-fouling coatings.Therefore,not only does this research provide an efficient,multifunctional,highly pollution-resistant preparation method for designing a new filter,but it also confirms the application prospect of the macro-micro dual bionic strategy developed in this study in complex water treatment.

关 键 词：Triple crosslinking method ALGINATE Umbrella-shaped JELLYFISH Water purification 

分 类 号：O63[理学—高分子化学]