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. 2020 Aug 19;10(9):193. doi: 10.3390/membranes10090193

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© 2020 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) Structure of attapulgite nanorod. Reproduced with permission from [46], published by Royal Society of Chemistry, 2016. (b) Aluminosilicate single-walled nanotube. Reproduced with permission from [48], published by American Chemical Society, 2012.