Synthesis of Monolithic Fe₂O₃-Al₂O₃ Composite Aerogels via Organic Solvent Sublimation Drying

Figure 4

FT-IR spectrum of alumina aerogels (a), Fe₂O₃ aerogels (b), and Fe₂O₃-Al₂O₃ aerogel (c).

(a)

(b)

(c)