Research Article

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

Figure 4

Nitrogen adsorption-desorption isotherms (a) and pore size distributions (b) for hexagonal mesophase products synthesized under various NaOH/SiO2 ratios. The synthesis pH and H2O/SiO2 were kept as 11.2 and 70, respectively.