Graphene Oxide/Single-Walled Carbon Nanotube Membranes for CO₂ and N₂ Separation from Blast Furnace Gas

Figure 4

SEM images of (a) SWCNTs, (b) purified SWCNTs, (c) graphite, (d) GO, and (e) and (f) GO/SWCNTs.

(a)

(b)

(c)

(d)

(e)

(f)