Selective Removal of Perfluorooctanoic Acid Using Molecularly Imprinted Polymer-Modified TiO₂ Nanotube Arrays

Figure 7

(a) PFOA degradation and defluorination towards UV photolysis, TiO₂ NTs, NIP-TiO₂ NTs, and MIP-TiO₂ NTs under 8 h irradiation; (b) release of fluoride ion responded to the change of PFOA concentration in the presence of MIP-TiO₂ NTs; (c) trends of total organic carbon responded to the change of PFOA concentration in the presence of MIP-TiO₂ NTs. Initial concentrations of PFOA and TOC were 72.5 μmol/L (30 mg/L).

(a)

(b)

(c)