Figure 5
From: Diatom-inspired silicification process for development of green flexible silica composite aerogels
(a,b) SFO: PEI hydrogel samples in a petri dish (50 mm diameter, 9 mm height) before demolding. (c) Demoulded SFO:PEI hydrogel sample. (d) SFO:PEI:SiO2 cylindrical aerogel sample (9 mm diameter, 18 mm height). (e,f) Top and lateral view of composite aerogel monolith on top of wheat grass indicating shell and core. (g) SEM–EDX elemental mapping of SFO: PEI:SiO2-0.5–3-Shell and (h) SFO:PEI:SiO2-0.5–3-core.
