Fig. 4: PFOA adsorption mechanisms and COF regeneration. | Nature Communications

Fig. 4: PFOA adsorption mechanisms and COF regeneration.

From: Cationic covalent organic framework for the fluorescent sensing and cooperative adsorption of perfluorooctanoic acid

Fig. 4

a–c The elemental mapping of TG-PD COF at different PFOA concentrations d A graphical representation of PFOA adsorption onto the TG-PD COF at increasing PFOA concentrations in water e The effect of temperature increase on the equilibrium PFOA adsorption capacity f The removal efficiency of PFOA through 5 different regeneration cycle ([PFOA] = 0.2 mg·L−1, [COF] = 100 mg·L−1).

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