Functionalized Mesoporous Silica Membranes for CO₂ Separation Applications

Figure 1

Structures of various ordered mesoporous materials [27].

(a) Hexagonal (P6mm); example: MCM-41, SBA-15

(b) Bicontinuous cubic gyroid (lad); example: MCM-48, KIT-6

(c) Face-centered cubic (Fmm); example: FDU-12

(d) Body-centered cubic, example: SBA-16

(e) Lamellar; example: MCM-50