Research Article

Formation of Mesoporous Materials from Silica Dissolved in Various NaOH Concentrations: Effect of pH and Ionic Strength

Figure 5

Small angle XRD powder patterns for the products synthesized at (A) pH = 11.3, (B) pH = 11.0, (C) pH = 10.7, (D) pH = 10.4, and (E) pH = 10.0 (a). NaOH/Si was kept as 1. Enlarged patterns for the samples A and B are presented in (b).