Anti-corrosion properties of bio-inspired surfaces: a systematic review of recent research developments

Strengthening measures for protecting metals against corrosion hold significant importance for environmental preservation, economic development, and the enhancement of people's well-being. It is crucial to research and implement effective protection technologies. Bio-inspired surfaces have emerged as a compelling avenue in corrosion protection research, owing to their unique design and functionality. This paper delves into the key findings and innovations in bio-inspired surfaces for anticorrosion through a systematic review organized into three distinct parts, each focusing on a specific category of bio-inspired coatings. In the first part, the paper examines self-healing coatings inspired by the regenerative properties of skin. Emphasis is placed on how the design and composition of these coatings draw inspiration from the remarkable self-repair ability of the skin. The second part delves into superhydrophobic coatings inspired by the lotus plant. The paper systematically presents the design curation, structural features, and research progress of superhydrophobic surfaces, with a focus on their role in self-cleaning, anti-pollution, and anti-corrosion. The third part explores slippery liquid-infused porous surfaces (SLIPSs) inspired by lubricating plants and animals, such as Nepenthes. This section provides a systematic overview of research advances in SLIPSs and their potential applications in corrosion protection. Through this systematic review, this paper offers a comprehensive perspective on various strategies employed in bio-inspired surfaces for corrosion protection. By summarizing and reviewing the latest developments in self-healing, superhydrophobic, and SLIPS surfaces, this paper provides valuable insights into current advancements in the field. This review presents three nature-inspired anti-corrosion strategies, discusses the challenges associated with them, and provides an overview of their research advancements in recent years.