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. 2019 Jan 16;9(1):107. doi: 10.3390/nano9010107

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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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(a) FE-SEM image of TOCNs/TOWFs-B films, (b) FE-SEM image of TOCNs/TOWFs-C films, (c) 3D AFM image of TOCNs/TOWFs-B films surface, (d) 3D AFM image of the rough surface of TOCNs/TOWFs-C films, (e) cross-sectional structure of TOCNs/TOWFs-B films, and (f) cross-sectional structure of TOCNs/TOWFs-C films.