Working Paper Article Version 1 This version is not peer-reviewed

Self-supporting Smart Air Filters based on PZT/PVDF Electrospun Nanofiber Composite Membrane

Version 1 : Received: 8 July 2020 / Approved: 10 July 2020 / Online: 10 July 2020 (03:51:24 CEST)
Version 2 : Received: 14 May 2021 / Approved: 17 May 2021 / Online: 17 May 2021 (10:57:06 CEST)

A peer-reviewed article of this Preprint also exists.

Journal reference: Chemical Engineering Journal 2021, 423
DOI: 10.1016/j.cej.2021.130247


Smart air filters are beneficial to provide highly efficient particle removal, treat multiple contaminants simultaneously and conserve energy during air filtration processes. Herein, a type of self-supporting smart air filter (SSSAF) was fabricated by sandwiching the VOC-responsive PZT/PVDF electrospun membrane with two metal mesh electrodes. Besides the high filtration efficiency for sub-micron particles, the SSSAF showed good responses to pressure drop in the range of 0 to 500 Pa via the electroactivity of PZT/PVDF membrane. In addition, the SSSAF achieved VOC sensing function via the swelling properties of PZT/PVDF membrane in organic vapors, demonstrated by its signal to 50 to 200 ppm ethanol gases. The SSSAF based nanogenerator was employed to harvest wind energy, which was further applied to inhibit bacterial growth without the need of additional power input. The results provide new insight into development of all-in-one smart air filters.


self-supporting; smart air filter; sensors; energy harvesting; anti-bacteria

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