Review Article
Sol–Gel Synthesis of Nanostructured Mesoporous Silica Powder and Thin Films
Figure 4
The possible interaction mechanisms between the inorganic species, the head group of the surfactants, and the mediating ion, under (a) acidic reaction condition, S+I− synthesis pathway, (b) basic reaction condition, S−I+ synthesis pathway, (c) in the presence of M− mediating ion, S+M−I+ synthesis pathway, (d) M+ mediating ion, S−M+I− synthesis pathway, and at pH equal to PZC of silica reaction conditions, (e) S0I0 synthesis pathway, or (f) S0(MI)0 where a mediating ion (M) is used, reproduced from [30] with permission from John Wiley & Sons, Inc.
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