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. 2019 Feb 8;7:66. doi: 10.3389/fchem.2019.00066

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Copyright © 2019 Fraoucene, Sugiawati, Hatem, Belkaid, Vacandio, Eyraud, Pasquinelli and Djenizian.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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UV-Vis absorption spectra of annealed TiO₂ NTs layers grown from anodization of TA6V alloys at 60 V for 3 h in fluoride ethylene glycol electrolyte with different water contents: 2wt%H₂O (A), 5wt%H₂O (B), 10wt%H₂O (C), 15wt%H₂O (D), and 20wt%H₂O (E). Variations of (αhυ)² vs. photon energy (hυ) of TiO₂ NTs synthesized with 20 wt% H₂O in the fluoride ethylene glycol electrolyte (F).