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. 2019 Mar 13;10(16):4445–4457. doi: 10.1039/c8sc04832k

Fig. 5. (a) ATR-IR spectra of both modified and unmodified PES membranes. (b) X-ray photoelectron spectroscopy (XPS) spectra and F 1s spectrum (inset) of the modified and unmodified membrane surfaces. (c) Captive bubble images under deionized water, and (d) contact angles under different pH aqueous solutions of modified and unmodified membranes.

Fig. 5