摘要
简单、精密、可控的制造技术在功能表面中具有广阔的应用前景.在这项工作中,我们通过使用食盐这种水溶性材料作为模板,利用金属玻璃优异的热塑成型性能,成功地实现了多孔金属玻璃的溶解制造.通过这种溶解制造方法制备的微/纳米结构具有良好的可调控性,不仅可以制备大面积多孔结构,还可以制备具有纳米级复制精度的有序规则阵列.其中,通过可溶性模板策略制备的无序多孔结构具有约140°的水滴接触角和接近于0°的油滴接触角,可用于油水分离,并且在强酸和强碱的环境中浸泡后表现出稳定的润湿性.即使在严重磨损后,带有多孔结构的表面仍可保持约130°的水滴接触角和约4°的油滴接触角.此外,该策略显示出优异的可重复使用性能.通过在同一个金属玻璃表面上重构三次多孔结构,发现每次重构的多孔结构的润湿性没有显著变化.本文的研究成果为制备多级孔结构及功能表面提供了一种简便可控的方法.
A facile,precise,and controllable manufacturing technology is desired for hierarchical functional surfaces.In this work,we successfully manufactured porous metallic glass using a water-dissolution material as template and the excellent thermoplastic property of metallic glass.The prepared micro/nanostructures have excellent tunability,and the proposed approach can be used to prepare large-area disordered porous structures and ordered regular arrays with nanoscale replication accuracy.In particular,the disordered porous structure prepared by the dissolvable template strategy exhibits a water contact angle of~140°and an oil contact angle of~0°,making it suitable for oil/water separation.It also shows stable wettability after being soaked in strong acid or alkali environments and maintains a~130°water contact angle and a~4°oil contact angle even after severe wear.The proposed strategy also possesses excellent recycling properties.We reconstructed porous structures on the same surface three times and found no significant change in wettability for each reconstructed porous structure.Our research provides a facile and controllable approach for the preparation of hierarchical porous structures and paves the way for the design of other functional surfaces.
作者
傅佳男
李真
刘泽航
李信
温文馨
孙飞
李路遥
黄金标
阮文清
任帅
张振轩
梁雄
马将
Jianan Fu;Zhen Li;Zehang Liu;Xin Li;Wenxin Wen;Fei Sun;Luyao Li;Jinbiao Huang;Wenqing Ruan;Shuai Ren;Zhenxuan Zhang;Xiong Liang;Jiang Ma(Shenzhen Key Laboratory of High Performance Nontraditional Manufacturing,College of Mechatronics and Control Engineering,Shenzhen University,Shenzhen 518060,China;Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen 518055,China)
基金
supported by the Key Basic and Applied Research Program of Guangdong Province,China(2019B030302010)
the National Natural Science Foundation of China(52122105,51871157,and 51971150)
the National Key Research and Development Program of China(2018YFA0703604)。