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. 2021 Apr 26;6(18):11804–11812. doi: 10.1021/acsomega.1c00791

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© 2021 The Authors. Published by American Chemical Society

Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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(a) Zein nanofiber cotton fibers (Z-CoF) with a thin layer of zein nanofibers (ZNF) before (ZNF/Z-CoF) or after (Z-CoF/ZNF) the layer of Z-CoF. (b) Z-CoF formed from soaking in ethanol showed the highest removal efficiency and lowest pressure drop of all three solvents tested. (c) Normalized pressure drop and PM_2.5 removal. (d) Removal efficiency of regular cotton fibers and functionalized fibers for a range of PM sizes. (e) Efficiency of functionalized fibers against HCO and CO. (f) Normalized pressure drop and PM_2.5 removal efficiency for CoF and Z-CoF prepared from 1-butanol (Ter-), acetone (Ace-), or ethanol (Eth-). Particle size distribution of zein nanoparticles on the CoF surface is also shown for (g) acetone and (h) ethanol. Reproduced with permission from ref (2). Copyright 2019 Elsevier.