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. 2020 Jun 18;10(6):1190. doi: 10.3390/nano10061190

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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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Formation of TiO₂/SAC spheres (I) and their surfaces after heat treatment (II) at different temperatures: strong acid ion exchange resin (A), TiO₂/SAC-700 (B), TiO₂/SAC-900–0.5 (C), TiO₂/SAC-900-2 (D), TiO₂/SAC-900-6 (E), and TiO₂/SAC-900-9 (F). Reprinted with permission from [70]. Copyright 2013, Elsevier.