. 2020 Sep 17;8:564838. doi: 10.3389/fchem.2020.564838
Copyright © 2020 Thomou, Diamanti, Enotiadis, Spyrou, Mitsari, Boutsika, Sapalidis, Moretón Alfonsín, De Luca, Gournis and Rudolf.
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Figure 1.
Chemical structures of the silica precursors used (APTEOS, BTB, and TEOS).