Ultrathin, ultralight dual-scale fibrous networks with high-infrared transmittance for high-performance, comfortable and sustainable PM0.3 filter

Yuchen Yang, Xiangshun Li, Zhiyong Zhou, Qiaohua Qiu, Wenjing Chen, Jianying Huang, Weilong Cai, Xiaohong Qin () and Yuekun Lai ()
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Yuchen Yang: Qingyuan Innovation Laboratory
Xiangshun Li: Donghua University
Zhiyong Zhou: Donghua University
Qiaohua Qiu: Donghua University
Wenjing Chen: Donghua University
Jianying Huang: Qingyuan Innovation Laboratory
Weilong Cai: Qingyuan Innovation Laboratory
Xiaohong Qin: Donghua University
Yuekun Lai: Qingyuan Innovation Laboratory

Nature Communications, 2024, vol. 15, issue 1, 1-12

Abstract: Abstract Highly permeable particulate matter (PM) can carry various bacteria, viruses and toxics and pose a serious threat to public health. Nevertheless, current respirators typically sacrifice their thickness and base weight for high-performance filtration, which inevitably causes wearing discomfort and significant consumption of raw materials. Here, we show a facile yet massive splitting eletrospinning strategy to prepare an ultrathin, ultralight and radiative cooling dual-scale fiber membrane with about 80% infrared transmittance for high-protective, comfortable and sustainable air filter. By tailoring antibacterial surfactant-triggered splitting of charged jets, the dual-scale fibrous filter consisting of continuous nanofibers (44 ± 12 nm) and submicron-fibers (159 ± 32 nm) is formed. It presents ultralow thickness (1.49 μm) and base weight (0.57 g m−2) but superior protective performances (about 99.95% PM0.3 removal, durable antibacterial ability) and wearing comfort of low air resistance, high heat dissipation and moisture permeability. Moreover, the ultralight filter can save over 97% polymers than commercial N95 respirator, enabling itself to be sustainable and economical. This work paves the way for designing advanced and sustainable protective materials.

Date: 2024
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DOI: 10.1038/s41467-024-45833-8

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