Novel Mesoporous Silica Materials with Hierarchically Ordered Nanochannel: Synthesis with the Assistance of Straight-Chain Alkanes and Application

Figure 3

SEM images (a-b) and TEM images (c-d) of mesoporous silica SBA-15 synthesized at different weight ratios of decane to P123 in the presence of NH₄F: (a) and (c) 0.4 : 1; (b) and (d) 5.8 : 1. Reprinted with permission from [34]. Copyright (2004) American Chemical Society.

(a)

(b)

(c)

(d)