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. 2019 Jun 4;11(6):983. doi: 10.3390/polym11060983

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Field emission scanning electron microscope (FESEM) images of WACF/TiO₂/Ag (Ag-containing wood-based activated carbon fibers coated by TiO₂ film): (a) WACF/TiO₂/Ag-0.05; (b) WACF/TiO₂/Ag-0.1; (c) WACF/TiO₂/Ag-0.2; (d) WACF/TiO₂/Ag-0.4.