1974/05/01 by Huimin Zhang, Zhiguang Guo, L.A. Schwartzkopf · 91 citations
Engineering · Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #Advanced Sensor and Energy Harvesting Materials #Composite material #Creatures #Engineering #Fluid Dynamics and Heat Transfer #Materials science #Nanotechnology #Process engineering #Quantum, superfluid, helium dynamics #Smart material #Superhydrophilicity #Surface Modification and Superhydrophobicity #Surface and Thin Film Phenomena #Wetting
paper · doi:10.1016/j.cis.2023.103003
published in Advances in Colloid and Interface Science 320, 103003 (Elsevier BV)
openalex publication_date 2023/09/26 · openalex created_date 2023/09/27 · openalex updated_date 2026/08/05
Clean water resources are crucial for human society, as the leakage and discharge of oily wastewater not only harm the economy but also disrupt our living environment. Therefore, there is an urgent need for efficient oil-water separation technology. Surfaces with switchable superwetting behavior have garnered significant attention due to their importance in both fundamental research and practical applications. This review introduces the fundamental principles of wettability in the oil-water separation process, the basic theory of switchable wettability, and the mechanisms involved in oil-water separation. Subsequently, the review discusses the research progress, challenges, and issues associated with three conventional types of special wettability materials: superhydrophobic/superoleophilic materials, superhydrophilic/superoleophobic materials, and superhydrophilic/underwater superoleophobic materials. Most importantly, it provides a detailed exploration of recent advancements in switchable wettability smart materials, which combine elements of traditional special wettability materials. These include stimulus-responsive smart materials, pre-wetting-induced materials, and Janus materials. The discussion covers key response factors, detailed examples of representative works, design concepts, and fabrication strategies. Finally, the review offers a comprehensive summary of switchable superwetting smart materials, encompassing their advantages and disadvantages, persistent challenges, and future prospects.