Skip to main content
. 2019 Nov 7;12(22):3671. doi: 10.3390/ma12223671

Figure 8.

Figure 8

FT-IR spectra of (a) pure SBA-15, (b) SBA-15-AP, (c) SBA-15-AP+18β-GA, (d) 18β-glycyrrhetinic acid (18β-GA). The picture at the right shows details of the spectra.