Slippery Porous‐Liquid‐Infused Porous Surface (SPIPS) with On‐Demand Responsive Switching between “Defensive” and “Offensive” Antifouling Modes

Abstract

Slippery liquid‐infused porous surfaces (SLIPS) have received widespread attention in the antifouling field. However, the reduction in antifouling performance caused by lubricant loss limits their application in marine antifouling. Herein, inspired by the skin of a poison dart frog which contains venom glands and mucus, a porous liquid (PL) based on ZIF‐8 is prepared as a lubricant and injected into a silicone polyurethane matrix to construct a new type of SLIPS for marine antifouling applications: the slippery porous‐liquid‐infused porous surface (SPIPS). The SPIPS consists of a responsive antifoulant‐releasing switch between “defensive” and “offensive” antifouling modes to intelligently enhance the antifouling effect after lubricant loss. The SPIPS can adjust antifouling performance to meet the antifouling requirements under different light conditions. The wastage of antifoulants is reduced, thereby effectively maintaining the durability and service life of SLIPS materials. The SPIPS exhibits efficient lubricant self‐replenishment, self‐cleaning, anti‐protein, anti‐bacterial, anti‐algal, and self‐healing (97.48%) properties. Furthermore, it shows satisfactory 360‐day antifouling performance in actual marine fields during boom seasons, demonstrating the longest antifouling lifespan in the field tests of reported SLIPS coatings. Hence, the SPIPS can effectively promote the development of SLIPS for neritic antifouling.This article is protected by copyright. All rights reserved

NIR-Driven Self-Healing Phase-Change Solid Slippery Surface with Stability and Promising Antifouling and Anticorrosion Properties

“…These results indicate that PCSSS possessed remarkable adhesion resistance to proteins, bacteria, and algae under simulated static and dynamic marine conditions. Furthermore, as shown in Figure S4, the result of actual marine antifouling test indicates that there are no fouling organisms attached to the PCSSS after 90 days, suggesting that the PCSSS possesses superior antifouling performance in the actual sea and demonstrates the potential for the bionic ultraslippery surface application. , …”

Biomimetic Slippery Surface with Exclusive Liquid-Repellent and Self-Cleaning Properties for Antifouling

“…Furthermore, the most essential stage for the development of marine fouling was the accumulation of biofilm, which furnished the descendants of some large fouling organisms with numerous nutrients, and the cultivation process of Chlorella is demonstrated in Section 2.3. After being immersed in Chlorella solution for 72 h, surfaces should be washed with pure water.…”

“…And when the liquid rolled off, it should adsorb pollutants on the textured surface and removed contaminants from the rolling textured surface together, thereby achieving an antifouling effect. Furthermore, the most essential stage for the development of marine fouling was the accumulation of biofilm, 31 which furnished the descendants of some large fouling organisms with numerous nutrients, and the cultivation process of Chlorella is demonstrated in Section 2.3. After being immersed in Chlorella solution for 72 h, surfaces should be washed with pure water.…”

Crystalline Alkyl Side Chain Enhanced Hydrophobicity–Oleophobicity for Transparent and Durable Low-Surface-Energy Coatings Based on Short Fluorinated Copolymers

“…Liquid-repellent surfaces, which provide protection from the penetration and contamination of water or oil, have generated much concern in fundamental interfacial research and practical applications, such as antifouling, self-cleaning, chemical shielding, icephobicity, and oil/water separation. − Such liquid repellency is usually generated by exploiting surface textures − and low-surface-tension materials. − Owing to their ultralow surface energy and excellent thermal and chemical stability, polymers possessing long perfluorinated side chains are typical low-surface-tension materials for constructing liquid-repellent surfaces . The fluoroalkyl groups can spontaneously enrich the outermost surface layer, thus creating a surface with a critical surface energy of 6 mN/m, which is the lowest ever known surface energy .…”