Trap-Induced Dense Monocharged Perfluorinated Electret Nanofibers for Recyclable Multifunctional Healthcare Mask

• Published in: ACS nano Vol. 15; no. 3; pp. 5486 - 5494
• Main Authors: Lin, Shizhe, Wang, Shuixiang, Yang, Wei, Chen, Shuwen, Xu, Zisheng, Mo, Xiwei, Zhou, He, Duan, Jiangjiang, Hu, Bin, Huang, Liang
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 23.03.2021
• Subjects: Air Filters; Delivery of Health Care; Humans; Nanofibers; Particulate Matter; health monitoring; perfluorinated polymer; nanofiber; electret; real charge; trap; personal protection
• ISSN: 1936-0851; 1936-086X
• DOI: 10.1021/acsnano.1c00238

Recently, wearable and breathable healthcare devices for air filtering and real-time vital signs monitoring have become urgently needed since virus and particulate matter (PM) cause serious health issues. Herein, we present a trap-induced dense monocharged hybrid perfluorinated electret nanofibrous membrane (HPFM) for highly efficient ultrafine PM0.3 removal with an efficiency of 99.712% under low pressure drop (38.1 Pa) and high quality factor of 0.154 Pa–1. Furthermore, a recyclable multifunctional healthcare mask is constructed by integrating the HPFM-based nanogenerator, which realizes efficient PM0.3 filtering and wireless real-time human respiration monitoring simultaneously. More importantly, the performance of this mask is still relatively stable even at 100%RH humidity and 92 °C temperature conditions for 48 h, which infers that it can be reused after disinfection. The strategy of fabricating HPFM provides an approach to obtain charge-rich stable electret materials, and the design of multifunctional masks demonstrates their potential application for future personal protection and health monitoring devices.