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. 2020 Aug 26;9(9):903–912. doi: 10.1002/open.202000127

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© 2020 The Authors. Published by Wiley-VCH GmbH

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Selected TEM (Transmission Electron Microscopy) micrographs of (a) P25 and of samples (b) M‐TiO₂ (arrows in the inset show the occurrence of intra‐particle mesopores, deriving from the synthesis procedure depicted in Scheme 1a); (c) RM‐TiO₂ (arrows in the inset show interference fringes); (d) TF‐TiO₂‐200 (arrows in the inset show interference fringes) and (e) TF‐TiO₂ −600.