Abstract
Precise functionalization of heterogeneous interfaces in nanofibers is essential for advanced personal protective membranes. Here, we demonstrate a hierarchically heterogeneous interface structuring (HHIS) strategy to fabricate microenvironment-regulating and self-decontaminating meta-membranes (MRSD-PLA) by embedding zeolitic imidazolate framework-8 (ZIF-8) nanocrystals within poly(lactic acid) (PLA) fibers and anchoring F-TiO2 nanoblocks on their surfaces, creating an electronegativity contrast that directs electron migration and charge redistribution. ZIF-8 of porosity and electroactivity could enable charge capture/storage and trans-membrane transport (water vapor transmission rate: 4018 g·m⁻2·d⁻1; air permeability > 60 mm·s⁻1 at 100 Pa). Combined with the hydrophobicity and self-cleaning capability from F-TiO2, a sustained charge migration establishes a closed-loop capture-storage-regeneration cycle. This results in self-powered sensitive monitoring and a high PM0.3 filtration efficiency of 99.3% yet a low pressure drop of 51.9 Pa (quality factor: 0.11 Pa⁻1). Moreover, MRSD-PLA inhibit bacterial growth and balance robust mechanical strength with biodegradability, showcasing great potential for high-performance personal protection.
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Acknowledgements
The research work was supported by the National Key R&D Program of China (Nos. 2024YFC3015003 (H.X.) and 2025YFE0219700 (H.X.)), the National Natural Science Foundation of China (Nos. 52573054 (H.X.), 52174222 (X.J.H.), and 52003292 (H.X.)), the China Postdoctoral Science Foundation (2024M763565 (H.X.)), and the Key Program of Jiangsu Provincial Research Foundation for Basic Research (BK20253032 (H.X.)).
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Wang, SZ., He, X., Wei, XH. et al. Hierarchically heterogeneous interface structuring strategy for microenvironment-regulating and self-decontaminating biodegradable meta-membranes. Nat Commun (2026). https://doi.org/10.1038/s41467-026-72873-z
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DOI: https://doi.org/10.1038/s41467-026-72873-z
