  As a persistent pollutant, PFOA places a serious threat to natural ecosystems
and human health for its global distribution and residual. Currently,
adsorption technology is a promising approach for PFOA removal. MOFs become a
concerned adsorbent attributing to its special designability and easy modular
synthesis. Aiming at improving hydrophobic interactions to absorb PFOA, this
study was designed to introduce amino group to decorate Zr-based MOF UiO-66.
And subsequently introduced GO to modify UiO-66-NH2 to explore the influence of
hydrophobicity on PFOA adsorption removal. Based on the performance of the
characterization of synthesized products, the adsorption removal effect of PFOA
and the corresponding adsorption mechanism were discussed. The results indicate
the introduction of the amino group could enlarge the pore size, but also
display strong hydrophobic effects, significantly enhance the adsorption
capacity(maximum capacity was 1653mg/g). This work not only provides the method
of introducing amino group to Zr-based MOFs to strengthen the hydrophobic
properties in purpose of removing PFOA efficiently, but also proposes the
feasible the reference for tailoring MOFs to remove endurable organic
pollutants in water.
