Breathing-Driven Self-Powered Pyroelectric ZnO Integrated Face Mask for Bioprotection

Moon Ju Kim, Zhiquan Song, Chang Kyu Lee, Tae Gyeong Yun, Joo Yoon Noh, Mi Kyung Park, Dongeun Yong, Min Jung Kang, Jae Chul Pyun

Research output: Contribution to journalArticlepeer-review

Abstract

Rapid spread of infectious diseases is a global threat and has an adverse impact on human health, livelihood, and economic stability, as manifested in the ongoing coronavirus disease 2019 (COVID-19) pandemic. Even though people wear a face mask as protective equipment, direct disinfection of the pathogens is barely feasible, which thereby urges the development of biocidal agents. Meanwhile, repetitive respiration generates temperature variation wherein the heat is regrettably wasted. Herein, a biocidal ZnO nanorod-modified paper (ZNR-paper) composite that is 1) integrated on a face mask, 2) harvests waste breathing-driven thermal energy, 3) facilitates the pyrocatalytic production of reactive oxygen species (ROS), and ultimately 4) exhibits antibacterial and antiviral performance is proposed. Furthermore, in situ generated compressive/tensile strain of the composite by being attached to a curved mask is investigated for high pyroelectricity. The anisotropic ZNR distortion in the bent composite is verified with changes in Zn-O bond lengths and O-Zn-O bond angles in a ZnO4 tetrahedron, resulting in an increased polarization state and possibly contributing to the following pyroelectricity. The enhanced pyroelectric behavior is demonstrated by efficient ROS production and notable bioprotection. This study exploring the pre-strain effect on the pyroelectricity of ZNR-paper might provide new insights into the piezo-/pyroelectric material-based applications.

Original languageEnglish
Article number2200712
JournalSmall
Volume19
Issue number2
DOIs
Publication statusPublished - 2023 Jan 11

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (grant numbers: NRF‐2020R1A2B5B01002187, NRF‐2020R1A5A101913111, and NRF‐2021R1A2C209370611).

Publisher Copyright:
© 2022 Wiley-VCH GmbH.

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Chemistry(all)
  • Biomaterials
  • Materials Science(all)

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