In this study,a durable superhydrophobic/superoleophilic melamine foam was fabricated by a facile and rapid one-step thiol-ene click chemistry and Michael addition reaction,which demonstrated excellent robustness in oil/water separation.First,1H,1H,2H-perfluoro-1-hexene reacted with thiol-functionalized polyhedral oligo-meric silsesquioxane via the thiol-ene click chemistry to obtain a fluorinated thiol-functionalized polyhedral oligo-meric silsesquioxane solution.Subsequently,the melamine foam was immersed to the solution system to form nanoaggregates on the melamine foam surface by the Michael addition reaction in the presence of ultraviolet light.The micro/nano rough structure and low surface energy of the nanoaggregates layer endowed the pristine melamine foam with superhydrophobicity;the water contact angle was greater than 150°.More importantly,the as-prepared melamine foam could withstand harsh conditions,such as a corrosive solution environment,strong ultraviolet light,mechanical compression,high and low temperature exposure,and ultrasonic washing.Driven by gravity,the as-prepared melamine foam could effi-ciently separate the oil/water mixtures and maintain 98％separation efficiency at high and low temperatures.In addition,it maintained the desirable absorption capability in different oil/organic solvents even after 15 absorption cycles.Accordingly,this facile,low-cost,and robust one-step method provides important support for the super-hydrophobic oil/water separation field.

Meng Li;Yuanfeng Fang;Chun Liu;Mengmeng Zhou;Xiaomei Miao;Yongbing Pei;Yue Yan;Wenjun Xiao;Huayu Qiu;Lianbin Wu

Key Laboratory of Organosilicon Chemistry and Materials Technology,Ministry of Education,Hangzhou Normal University,Hangzhou 311121,China

化学科学与工程前沿

[1]Meng Li;Yuanfeng Fang;Chun Liu;Mengmeng Zhou;Xiaomei Miao;Yongbing Pei;Yue Yan;Wenjun Xiao;Huayu Qiu;Lianbin Wu-.Facile generation of highly durable thiol-functionalized polyhedral oligomeric silsesquioxane based superhydrophobic melamine foam)[J].化学科学与工程前沿,2022(08):1247-1258

superoleophilic,nanoaggregates

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