Figure 5. (a) Attenuated
total reflectance Fourier-transform
infrared spectra of TFC,
TFN-(Zr)-1, TFN-(Zr/Ti)-1, TFN-(Zr)-2, and TFN-(Zr/Ti)-2 membranes. (b)
Fourier-transform infrared spectra of TFC and TFN-(Zr/Ti)-2 membranes
and UiO-66(Zr/Ti)-NH2 nanoparticles. Here TFC denotes
thin-film composite membrane, TFN-(Zr)-1 and TFN-(Zr)-2 denote thin-film
nanocomposite membranes with UiO-66(Zr)-NH2 loadings of
0.01% and 0.03% (w/v) in 50 mL of n-hexane solution,
respectively, and TFN-(Zr/Ti)-1 and TFN-(Zr/Ti)-2 denote thin-film
nanocomposite membranes with UiO-66(Zr/Ti)-NH2 loadings
of 0.01% and 0.03% (w/v) in 50 mL of n-hexane solution,
respectively.