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. 2022 Oct 14;12(1):2201591. doi: 10.1002/adhm.202201591

Figure 2.

Figure 2

3D printing and fabrication of KNF‐PVA aerogels. a) Digital photos of 3D printed multilayer KNF‐PVA inks and corresponding aerogels after solvent exchange and supercritical drying. b) SEM image of 3D printed KNF‐PVA aerogel showed uniform layer thickness with parallel boundaries. c) Zoomed‐in image of the boxed region in (b) revealed porous surface of KNF‐PVA aerogels. d) SEM image of the cross section and e) structural details of 3D‐printing KNF‐PVA aerogel. f) FTIR spectra of PVA, KNF and KNF‐PVA. g) The process of the formation of the KVF‐PVA aerogel network.