Skip to main content
. 2013 Jul 12;3(3):136–150. doi: 10.3390/membranes3030136

Figure 2.

Figure 2

(a) FTIR spectra of the calcined silica xerogels and (b) the peak area ratio of the silanol peak at 960 cm−1 against the siloxane peak at 1070 cm−1 for the spectra as a function of the sol pH.