Bio-inspired multimimimetic synergistic strategies Cs3Bi2Br9/ZnS organosilicon antifouling flexible films: Coupled micro/nanostructured surfaces, fluorescence, and reactive oxygen species mechanisms

• Published in: Materials today chemistry 2024-09, Vol.40, p.102217, Article 102217
• Main Authors: Zhang, Mai, Wang, Zhirui, Zhou, Nan, Zhang, Linlin, Liao, Jianjun, Zhang, Ping, Ge, Chengjun
• Format: Article
• Language: English
• Subjects: Biomimetic; Cs3Bi2Br9/ZnS; Fluorescence; Synergistic antifouling
• ISSN: 2468-5194; 2468-5194
• DOI: 10.1016/j.mtchem.2024.102217

Constructing multifaceted bio-inspired environmentally friendly films combining the synergistic advantages of multiple bionics can improve the static antifouling effect of antifouling-releasing silicones and mitigate the toxicity to marine ecology. In this work, based on the multiple anti-fouling mechanisms of fluorescent corals, designed Cs3Bi2Br9/ZnS/PDMS (CZP) flexible fluorescent films with surface microstructures and interpenetrating network Moreover, the blue fluorescence in the CZP films can be maintained for a long time in seawater environment (attributed to bismuth-based chalcogenides), and the formation of the heterostructure of Cs3Bi2Br9/ZnS (CBB/ZS) improves the ability of releasing reactive oxygen species (hydroxyl radical, superoxide radical, and singlet-linear oxygen).The CZP films obtained excellent antifouling effect under static conditions with antimicrobial rate up to 90.51 % and anti-algae adhesion to diatoms up to 96.60 %, which was attributed to the synergistic effect of the fluorescence functionality, micronized structure, and free radical release. Consequently, this work provides a promising avenue for the development of marine antifouling silicon-based films for efficient and environmentally friendly applications. [Display omitted] •Successful preparation of Cs3Bi2Br9/ZnS/PDMS bionic composite film.•The bionic composite film can continuously emit blue fluorescent effect in seawater.•The bionic composite film has superior marine antifouling effect.•Coupled mechanisms of micro/nanostructures, fluorescence and reactive oxygen species release.