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. 2022 Jul 9;27(14):4413. doi: 10.3390/molecules27144413

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© 2022 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 (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

(A) The preparation process of PANF honeycomb (HC); scale bars: 10 mm [43]; (B–E) PANF HCs with different round, square, triangular and irregular cells, respectively; scale bars: 10 mm [43]. Copyright 2021 John Wiley and Sons.