Abstract
Surface micro-/nanostructures and wettability play important roles in gaseous plastron stability. Inspired by the structure and function of Salvinia and lotus leaf, the microstructure-silicon dioxide-graphene-silicone rubber (MS-SiO2-GN-SR) composites with bubble trapping ability were synthesized. MS-SiO2-GN-SR can rapidly adsorb a large number of air bubbles under water to form a large gaseous plastron, which can be used as an antifouling barrier to prevent microbial invasion. MS-SiO2-GN-SR has a strong bubble adsorption function due to its superhydrophobicity and surface roughness. Under dynamic conditions, compared with GN-SR, the adhesion of Gram-negative bacteria, Gram-positive bacteria, and marine algae attachment on the surface of MS-SiO2-GN-SR decreased by 50.51%, 63.89%, and 60.8%, respectively. After 48h incubation, MS-SiO2-GN-SR still maintained the best antifouling performance. These results suggest that physical antifouling strategies based on macroscopic gaseous plastron are promising for the marine industry and maritime transport.
Published Version
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