Slippery anti-biofouling coatings on Mg alloy with lubricant self-replenishing performance

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-03-08 DOI:10.1016/j.colsurfa.2025.136587

Congcong Niu , Xiankun Lin , Doudou Zhang , Jiangpeng Liu , Jie Xu , Qiang He

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Abstract

The limited durability and difficulty in repairing damaged lubrication layers are significant challenges hindering the practical applications of slippery liquid-infused porous surfaces (SLIPS) in fields such as marine antifouling. Here, we present an antifouling SLIPS coating with lubricant self-replenishing properties by grafting silica aerogel onto the layered double hydroxide (LDH) structure. The LDH structure is synthesized on the surface of Mg alloy via a hydrothermal reaction. Following the curing of polymethylsiloxane, silica aerogel is grafted onto the surface, and lubricating oil is infused to obtain the SLIPS coating. The LDH structure provides interconnected microcavities for lubricating oil storage, enabling self-replenishing properties when the lubricating layer is damaged, thereby enhancing the coating's durability. The SLIPS coating exhibits high performance in resisting adhesion of Chlorella vulgaris, Phaeodactylum tricornutum, and Pseudoaltteromonas nigrifaciens, achieving an over 80 % reduction in fouling organism coverage compared to bare Mg. This study presents a promising approach for the application of SLIPS in antifouling.

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.