Preparation and Characterization of Kynurenic Acid Occluded in Sol-Gel Silica and SBA-15 Silica as Release Reservoirs

<table>N<sub>2</sub> adsorption-desorption isotherms of SiO<sub>2</sub>, SiO<sub>2</sub>-KYNA, SBA-15, and SBA-15-KYNA samples.</table>

Journal of Nanomaterials

Figure 6: Preparation and Characterization of Kynurenic Acid Occluded in Sol-Gel Silica and SBA-15 Silica as Release Reservoirs 