Mesoporous Structure Control of Silica in Room-Temperature Synthesis under Basic Conditions

Figure 5

Changes in XRD patterns with amount of EtOH in the reactant mixture solution: compositions (TEOS : NH₃ : EtOH : CTABr : H₂O = 1 : 20 :  : 0.2 : 300) are (a) , (b) , (c) , and (d) .